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TU 14-3-379-75

MINISTRY OF FERROUS METALLURGY OF THE USSR

AGREED:

Chief Engineer

Soyuzprompribora

USSR Ministry of Instrument

A.S. Konstantinov

«25» .07.1975

APPROVED:

Chief Engineer

GLABTRUBSTAL

V.A. TKACHENKO

August 26, 1975

MANOMETRIC PIPES FROM DISPERSION-
HARDING ALLOYS 36NKHTYU (EI-702),
36NKHTYUM (EP-51), 42NKHTYu

TECHNICAL CONDITIONS
TU 14−3-379−75
(instead of ChMTU 3−275−69)

Introduction period: from 01.11.1975

AGREED:
Chief Engineer
Central Design Bureau «Teplopribor"
Z.G. Blinstein

«26» .08.1975

For the period: until 01.11.1980

DEVELOPED:

Deputy director of VNITI
A.A. SHEVCHENKO

«19» .08.1975

Chief Engineer of TOEH VNITI
A.V. FORELOCK

«12» .08.197

CONTROL
EXAMPLE

GOOD for 2003

1975 year

These technical conditions apply to the supply of cold-worked seamless thin-walled and extra-thin-walled pipes made of precipitation-hardening alloys 36NKhTYu / EI-702 /, 36NKhTYuM / EP-51 /, manufactured from a pipe billet supplied according to specifications TU 14−3-209−74, respectively, namely from alloy 42NKhTYu.

The pipes are intended for use as a blank in the manufacture of elastic sensitive elements of devices of high accuracy and increased reliability.

1. VARIETY

1.1. Pipe sizes and maximum deviations must correspond to those indicated in table 1.

1.2. Pipes are supplied with an unmeasured length of at least 1 m and a multiple of length with a multiplicity of no more than 1 m. The multiplicity of pipes is specified in the order. It is allowed to supply off-gauge pipes with a length of at least 0.5 m in an amount of not more than 20% of the order.

1.3. Pipes are supplied in OD and wall thickness. Delivery of pipes by inner diameter and wall thickness is allowed.

1.4. The curvature of the pipes should not exceed 1.5 mm per meter of length.

1.5. The ovality and wall thickness of the pipes should not deduce the diameter and wall thickness beyond 0.8 maximum deviations.

1.6. An example of a symbol for a pipe with a diameter of 10 mm with a wall thickness of 1 mm, a multiple of 400 mm:

Pipe 10x1x400 kr EI-702 TU 14−3-379−75.

2. TECHNICAL REQUIREMENTS

2.1. Pipes are made of alloys 36NKhTYu / EI-702 /, 36NKhTYuM / EP-51 /, 42NKhTYu with a chemical composition according to GOST 10994−74 .

Table 1

mm
Wall thickness Maximum deviations along the wall Outside diameter and maximum deviations in diameter
4.02 4.5 5.0 6.0 7.0 8.0 10.0 12.0 14.0 16.0 20.0 25.0 32.0

+0.04

-0.03

-ten -0.15 -0.20 -0.30
0.15 ± 0.02 + - + - + + + + + - - - -
0.18 ± 0.02 - - - - + + + - - - - - -
0.20 ± 0.02 + + + + + + + + + + + - -
0.25 ± 0.03 - - + + + + + + + + + - -
0.30 ± 0.03 + + + + + + + + + + + + +
0.35 ± 0.03 - - + + + + + + + + + - -
0.40 ± 0.04 + + + + + + + + + + + + +
0.50 ± 0.04 + + + + + + + + + + + + -
0.60 ± 0.5 - + + + + + + + + + + + +
0.70 ± 0.05 - - + + + + + + + + + - -
0.80 ± 0.06 - - + + + + + + + + - - +
0.90 ± 0.06 - - + + + + + + + + - - -
1.00 ± 0.08 - - + + + + + + + + + + +
1.10 ± 0.08 - - - + + + + + - - - - -
1.20 ± 0.08 - - - - + + + + + + - + +
1.40 ± 0.09 - - - - - - - + + + + + +
1.60 ± 0.10 - - - - - - - + + + - + +
1.80 ± 0.10 - - - - - - - + + + + + +
2.00 ± 0.15 - - - - - - - - + + + + +
2.20 ± 0.15 - - - - - - - - - + - - -
2.40 ± 0.15 - - - - - - - - + + - - -
2.60 ± 0.15 - - - - - - - - - + - - -

Pipes made of 42НХТЮ alloy are manufactured with optional properties for mechanical and technological tests for the first 1000 m, after which the standards are specified.

2.2. Pipes are manufactured in heat treated / hardened / condition.

Note: At the request of the customer, pipes are manufactured in a cold-worked state with a degree of deformation: 25−60% for pipes with a diameter of 14 mm and above and 20−60% for pipes with a diameter of less than 14 mm. Pipes manufactured in cold-worked condition are not subjected to electropolishing, mechanical and technological tests for the following points:

a / Determination of grain size;

b / For intergranular corrosion;

c / Flattening.

The certificate for cold-worked pipes indicates the mode of the last hardening and the degree of deformation.

The curvature of cold-worked pipes is not regulated.

2.3. The mechanical properties of pipes must be at least as shown in Table 2:

table 2

Steel grades After aging 675 + 720 ° С Delivery status
δ in kg / mm 2 δ 5% δ in kg / mm 2 δ 5%
36НХТЮ 130 fifteen 70 32
36NKHTYUM 140 nine - -

Note:

  • It is allowed to supply up to 30% of pipes from the order with a ultimate tensile strength in the delivered state of at least 65 kg / mm 2 .
  • By agreement of the parties, it is allowed to supply pipes with a temporary tensile strength after aging of at least 100 kg / mm 2 .
  • The results of testing pipes made of alloy 36NKhTYuM are optional for the first 10,000 m, after which the standards are specified.

2.4. The grain size of the pipe metal must be no larger than 5 points.

2.5. At the request of the consumer, pipes made of EI-702 steel in the delivered state must withstand the intergranular corrosion test.

2.6. Depending on the order, pipes can be supplied with an etched, ground or electropolished outer surface and an etched or electropolished inner surface.

Note: Pipes with an outer and inner diameter of more than 6 mm can be electropolished.

2.7. On the surface of the pipes as delivered, there should be no cracks, captivity, flaws, sunsets, sinks, dents, burns, pickling rashes and foreign inclusions.

2.8. Local or continuous cleaning or grinding of the indicated defects is allowed, provided that the diameter and wall thickness do not go beyond the minus limit deviations during the continuous cleaning or grinding, and during local cleaning the wall thickness does not go beyond the minus limit deviations.

2.9. On the outer and inner surfaces, minor defects are allowed due to the production method: risks, scratches, gentle dents, local mesh resulting from uneven metal etching, ripples, roughness.

On pipes, areas of matte surface and discoloration are not allowed.

The wall thickness during control cleaning should not go beyond the minus limit deviations.

Reference standards can be agreed upon if necessary.

2.10. The ends of the pipes should be cut at right angles and deburred.

2.11. Pipes of gauge table 1 must withstand the flattening test without cracking up to a gap between flattening surfaces equal to 2 wall thicknesses for wall thicknesses up to 1 mm and 3 wall thicknesses for wall thicknesses of 1 mm and above.

If small defects are found on flattened samples, which are the result of external defects due to the production method and allowed without cleaning (clause 9.9.), The control is carried out visually according to agreed standards.

3. RULES OF ACCEPTANCE AND TEST METHODS

3.1. Each rough batch is subject to visual inspection and measurement. The batch must consist of pipes of the same size in diameter and wall thickness, one steel grade and one heat. The number of pipes in a batch is no more than 500 pieces.

3.2. Inspection of the outer surface of the pipes is carried out visually.

3.3. At the request of the consumer, inspection of the inner surface of pipes with an inner diameter of 8.2 mm and whiter is carried out using a periscope, while pipes with an inner diameter of 8.2−13 mm are inspected from both sides at a length of 1.5 m. In other cases, the inner surface is monitored on samples with a length of 100 mm taken from 3% of the pipes in the batch, but not less than 3 pipes.

3.4. Outside diameter control is carried out in three places along the pipe length with a micrometer, bracket or other device providing the required measurement accuracy. The pipe wall thickness control is performed with a micrometer from the pipe ends or on samples with a length of at least 50 mm, cut along the generatrix. Samples are cut from 3% of the pipes in the batch, but not less than 3 pipes.

3.5. The chemical composition of the pipe metal is accepted according to the certificate for the pipe billet. If it is necessary to check the chemical composition of the finished pipes, chips are taken from one of the pipes of this melt around the circumference in several places along the pipe length. Chemical analysis is carried out according to GOST 12344−66, GOST 12345−66, GOST 12346−66, GOST 12347−66, GOST 12348−66, GOST 12350−66, GOST 12352−66, GOST 12352−66, GOST 12356−66, GOST 12357−66 .

3.6. Determination of grain size is carried out according to GOST 5639−65 .

3.7. Tensile testing should be carried out in accordance with GOST 10006−73 with a moving grip speed of not more than 44 mm / min.

3.8. Flattening test is performed in accordance with GOST 8695−58 .

3.9. The intergranular corrosion test is carried out according to the AM GOST 6032−58 method with provoking heating to a temperature of 650−720 ° C.

3.10. To control the quality of pipe metal in the state of delivery, the following number of samples is taken:

3.10.1. For flattening — from 2 pipes of a batch, one sample.

3.10.2. Tensile after quenching, tensile after aging, to control the grain size and intergranular corrosion — from 3 pipes of a batch, one sample for each type of test.

3.11. If the results of any test are unsatisfactory, these tests are repeated on twice the number of samples. In case of unsatisfactory results of repeated tests on at least one sample, all pipes of the batch are subjected to the type of tests for which unsatisfactory results were obtained. Pipes that have shown unsatisfactory results in any of the types of tests, both during the initial and during repeated and individual checks, are rejected.

4. MARKING, PACKAGING, TRANSPORTATION

4.1. The pipes are not individually marked, but are shipped in paper-wrapped packages.

4.2. Each package must be accompanied by a tag indicating:

a / manufacturer;

b / batch number;

c / number of pipes in a batch;

g / heat number;

d / alloy grade;
f / pipe size.

4.3. Finished pipes must be shipped in wooden crates. Packaging of pipes should ensure their cleanliness and safety during transportation.

4.4. Each batch of pipes must be accompanied by a document certifying the quality and compliance of the pipes with the requirements of these specifications.

The document must contain:
a / name of the manufacturer;
b / batch number;

w / alloy grade;

g / pipe size;

d / melting number;

e / number of pipes in the batch;

w / results of all tests;

s / number of these technical conditions;

and / signature of the Quality Department.

5. PROCEDURE OF PAYMENT FOR PRODUCTS

5.1. An analogue for determining the basic price for pipes supplied according to these technical conditions are extra-thin-walled stainless steel pipes of grade X18H10T in accordance with GOST 10498−63 (price list No. 01−04−67, pp. 322−339).

5.2. The basic price for seamless thin-walled and extra-thin-walled pipes made of precipitation-hardening alloys of the 36NKhTYu (EI-702) and 36NKhTYuM (EP-51) types is determined based on the list price of 1 ton of pipes corresponding to the size of pipes — analogues made of steel grade Kh18N10T, increased by the difference in prices of converted pipes with dimensions 25x1.5 made of steel grade X18N10T according to TU 14−3-209−74 and steel grades 36NKhTYu (EI-702), 36NKhTYuM (EP-51) according to TU 14−3-209−74 increased by the metal consumption coefficient 1, five.

5.3. The main price is subject to additional charges for the supply of pipes:

5.3.1. Multiple lengths (price list No. 01−04, p. 339).

5.3.2. Particularly high accuracy in wall thickness (price list No. 01−04, page 339).

5.3.3. With tensile tests after aging (price list No. 01−40, p. 339).

5.4. Discounts for the supply of pipes are provided from the basic price:

5.4.1. Without testing for non-metallic inclusions (price list No. 01−04, p. 3390,

Note:

The main price is subject to surcharges when supplying pipes at the request of the consumer:

  • With inspection of the inner surface of pipes with an internal diameter of 8.2 mm and more (price list No. 01−04, p. 339).
  • With tests for intergranular corrosion (price list No. 01−04, p. 339).

Discounts are provided from the basic price for the supply of pipes at the request of the consumer:

  • With an etched, ground or electropolished outer surface and an etched or electropolished inner surface (price list No. 01−04, p. 339).
  • Cold-worked condition (price list No. 01−04, p. 339).


REGISTERED
August 27, 1975
Head laboratory of specifications and normals
VNITI (M.M.Bernstein)

MINISTRY OF FERROUS METALLURGY OF THE USSR

UDC

Group B62

Agreed: Approved:

Chief Engineer Soyuzprompribor Chief Engineer VPO Soyuztrubo

USSR Ministry of Instrument Steel

I.A. Gukalenko V.A. Tkachenko

6 «X 1977y. «28» XI 1977

MANOMETRIC PIPES FROM DISPERSION-

HARDENING ALLOYS 36NKHTYU (EI-702)

36NKHTYUM (EP-51), 42NKHTYu

TECHNICAL CONDITIONS

TU 14−3-379−75

Change No. 1

The term of introduction is from 01.03.1978.

1. This change applies to the supply of pipes made of 36NKhTYu steel (EI-702).

2. Clause 1.3 shall be stated in the wording:

«Pipes are supplied in OD and wall thickness. It is allowed to supply pipes by the inner diameter and wall thickness of pipes with an inner diameter of 10 mm and above within the range of table No. 1. Maximum deviations in diameter are positive and must be equal to the absolute value of the tolerance field for the outer diameter according to table No. 1. Limit deviations in wall thickness must correspond to table number 1.

3. Table No. 1 is presented in the form:

4. Clause 2.11. add:

«For pipes with a diameter of 3.5 mm with wall thicknesses greater than 0.3 mm, flattening test results are optional before statistics are collected.

STANDARDS STUDENT COMMITTEE
USSR Council of Ministers
Registered and entered in the register
state standards
01.16.75 for No. 114057

5. Clauses 2.7. and 2.8. combine into one item.

Agreed: Developed by:

Chief Engineer of the Central Design Bureau Deputy Director of VNITM

Teplopribor «A.A. Shevchenko

Z.G. Bluestein «5» 12 1977

«1» 08 1977 Chief Engineer TOEZ VNITI

A.V. Chub

«07» 07 1977


Table 1

mm

wall thickness limit switch-off Outside diameter and maximum deviations in diameter
3.5 3.8 4.0 4.5 4.8 5.0 6.0 7.0 8.0 10.0 12.0 14.0 15.0 16.0 20.0 25.0 32.0

+0.04

-0.03

-0.10 -0.15 -0.20 -0.30
0.15 ± 0.02 + - + - - + - + + + + + - - - - -
0.18 ± 0.02 - - - - - - - + + + - - - - - - -
0.20 ± 0.02 + (+) + + - + + + + + + + - + + - -
0.25 ± 0.03 + - - - - + + + + + + + - + + - -
0.30 ± 0.03 + - + + (+) + + + + + + + - + + + +
0.35 ± 0.03 + - - - - + + + + + + + - + + - -
0.40 ± 0.04 + - + + - + + + + + + + - + + + +
0.50 ± 0.04 + - + + - + + + + + + + - + + + -
0.60 ± 0.05 + - - + - + + + + + + + - + + + +
0.70 ± 0.05 - - - - - + + + + + + + - + + - -
0.80 ± 0.06 - - - - - + + + + + + + (+) + - - +
0.90 ± 0.06 - - - - - + + + + + + + - + - - -
1.00 ± 0.08 - - - - - + + + + + + + (+) + + + +
1.10 ± 0.08 - - - - - - + + + + + - - - - - -
1.20 ± 0.08 - - - - - - - + + + + + - + - + +
1.30 ± 0.09 - - - - - - - - - - (+) - - - - - -
1.40 ± 0.09 - - - - - - - - - - + + - + + + +
1.60 ± 0.10 - - - - - - - - - - + + - + - + +
1.80 ± 0.10 - - - - - - - - - - + + - + + + +
2.00 ± 0.15 - - - - - - - - - - - + - + + + +
2.20 ± 0.15 - - - - - - - - - - - - - + - - -
2.40 ± 0.15 - - - - - - - - - - - + - + - - -
2.60 ± 0.15 - - - - - - - - - - - - - + - - -



Ministry of ferrous metallurgy of the USSR

UDC

Group B62


Agreed: Approved:

Chief Engineer Soyuzprompribor Chief Engineer VPO Soyuztrubo-

USSR Ministry of Instrument Steel

I.A. Gukalenko V.A. Tkachenko

«18»… 1978 «21» VIII 1978

Manometric pipes made of dispersion

hardening alloys 36NKhTYu (EI-702)

36NKHTYUM (EP-51), 42NKHTYu

Technical conditions

TU 14−3-379−75

(modified by ChMTU 3−275−69)

Change No. 2

The term of introduction is from 01.12.1978.

1. The first paragraph of the preamble is stated in the wording: «These technical conditions apply to the supply of cold-worked seamless thin-walled and extra-thin-walled pipes made of precipitation-hardening alloys 36NKhTYu (EI-702), 36NKHTYUMVI (EP-51VI), manufactured from conversion pipes by TOEZ according to TU 14- 3−209−74 and TU 14−242−166−77, respectively, and Yuzhnotrubny plant from pipe billets according to ChMTU1−133−67 and TU 14−1-698−73, respectively. «

2. Section 5 «Procedure for payment for products» is set out in a new edition:

STATE COMMITTEE OF STANDARDS
USSR Council of Ministers
Registered and entered in the register
state standards
08/29/78 for No. 134743








rev. 2 to TU 14−3-379−65

2

5.1. An analogue for determining the basic price for pipes with a wall of 1.5 mm or less, supplied according to these technical conditions, are extra-thin-walled pipes made of corrosion-resistant steel grade 05X18H10T (08X18H10T) in accordance with GOST 10498−63 (price list No. 01−04−75, p. 256).

5.2. The basic price for seamless extra-thin-walled pipes made of precipitation-hardening alloys of the 36NKhTYu (EI-702) and 36NKHTYUMVI (EP-51VI) type is determined based on the list price of the corresponding or the nearest smaller analogue pipes made of steel grade 05Kh18N10T (08Kh18N10T), increased by the difference in the price of pipe billets of the corresponding diameters from alloy 36NKHTYu (EI-702) as per ChMTU 1−133−67, alloy 36NKHTYUMVI (EP-51VI) as per TU 1−698−73 and steel of the analog grade 05X18N10T (08X18N10T) as per ChMTU 1−958−70 multiplied by the standard consumption coefficients of the metal (price list No. 01−04−75, add. 6 p. 21):

a) Increase in the price of an analogue for pipes of steel grade 36NKhTYu (EI-702):

Table 3

Diameter, mm Wall thickness, mm Difference in metal cost Price increase in rub. for tn. Base of pipe billet prices
1 2 3 4 five

4−6

7−10

12−25

12−25

12−25

32

32

all walls

— «-

0.15−0.3

0.35−0.6

0.7−1.4

0.3−0.5

0.6−1.4

(3840 1.04−1180) 11.5

(3840 1.04−1180) 9.5

(3840 1.04−1180) 10.5

(3840 1.04−1180) 8.0

(3840 1.04−1180) 7.0

(3840 1.04−1180) 13.0

(3840 1.04−1180) 10.0

32356

26729

29543

22509

19695

36577

28136

Based on the price of bars of the same brand with K = 1.81.

() price list No. 01−02, part of Art. 78, 66 and the collection of the MCHM of the USSR dated 05/29/1975

Analogue price — price list No. 01−02-part 1, page 167.

Surcharge for multiplicity + 4% ibid page 171



sheet 2.

rev. 2 to TU 14−3-379−75

3.

b) Increase in the price of an analogue for pipes of steel grade 36NKHTYUMVI (EP 51VI)

Table 4

Diameter, mm Wall thickness, mm Difference in metal cost Price increase in rub. for tn. Base of pipe billet prices
1 2 3 4 five

4−6

7−10

12−25

12−25

12−25

32

32

all walls

— «-

0.15−0.3

0.35−0.6

0.7−1.4

0.3−0.5

0.6−1.4

(6100 1.04−1180) 11.5

(6100 1.04−1180) 9.5

(6100 1.04−1180) 10.5

(6100 1.04−1180) 8.0

(6100 1.04−1180) 7.0

(6100 1.04−1180) 13.0

(6100 1.04−1180) 10.0

53386

49058

54222

41312

36148

67132

51640

Based on the price of bars of the same brand with K = 1.81.

[

price list No. 01−02, part of Art. 80, 105, 66 and the collection of the MCHM of the USSR from 29.U.75

Analogue price — price list No. 01−02, part 1, page 167.

Surcharge for multiplicity + 4% ibid page 171



rev. 2 to TU 14−3-379−75

4

5.3. The base price is subject to additional payments for the supply of pipes:

5.3.1. Multiple length (price list No. 01.04−75, p. 296).

5.3.2. Tightening the curvature norms for pipes with a diameter of up to 10.5 mm (price list No. 01−04−75, p. 297).

5.3.3. Extremely high accuracy in wall thickness (price list No. 01−04−75, p. 274).

5.3.4. With tensile strength and elongation tests after aging (price list No. 01−04−75. P. 299). The base price is subject to a surcharge when supplying pipes at the request of the consumer:

5.3.5. With intergranular corrosion test (price list No. 01−04−75, p. 299).

5.3.6. With inspection of the inner surface of the pipes with a periscope with an inner diameter of 8.2 mm or more (price list No. 01−04−75, p. 299).

5.4. Discounts for the supply of pipes are provided from the basic price:

5.4.1. Without testing for non-metallic inclusions, price list No. 01−04−75g. page 299).

5.4.2. With an electropolished outer surface after grinding and an etched inner surface (without electropolishing) — price list No. 01−04−75g. p. 274.

5.4.3. With etched polished outer surface and etched electropolished inner surface (price list No. 01−04−75, p. 274).

5.4.4. With an etched polished outer surface and an etched inner surface (price list No. 01−04−75, p. 274).

5.4.5. When supplying pipes at the request of the consumer in a cold-worked condition, a discount is provided for the supply of pipes without:

5.4.6. Electropolishing (price list No. 01−04−75, page 274);

5.4.7. grain size tests (price list No. 01−04−75, p. 299);

5.4.8. flattening tests (price list No. 01−04−75, p. 299);

5.4.9. curvature control (price list No. 01−04−75, p. 297).


rev. 2 to TU 14−3-379−75

five

5.5. An analogue for determining the basic price for thin-walled pipes with a wall of 1.6 mm or more are pipes according to TU 14−3-218−74 (price list No. 01−04−75 p. 243).

5.6. The basic price for seamless thin-walled pipes made of dispersion-hardening alloys of the 36NKhTYu (EI-702) and 36NKhTYUMVI (EP-52VI) type is determined based on the list price of the corresponding or the nearest smaller analogue pipes made of steel grade 05Kh18N10T (08Kh18N10T) increased by the difference in price pipe billets of corresponding diameters from alloy 36NKHTYU (EI-702) as per ChMTU 1−133−67, alloy 36NKHTYUMVI (EP-52VI) as per TU 14−1-698−73 and steel of the analogue grade 08Kh18N10T as per TU 14−1-605−73 multiplied by the standard consumption coefficients of the metal (supplement 6, page 21 to the price list No. 01−04−75):

a) an increase in the price of an analogue for steel grade 3 pipes

6НХТЮ (ЭИ-702):

Diameter, mm Wall thickness, mm Difference in metal cost Price increase in rub. for tn. Base of pipe billet prices

12−14

16−32

all walls

— «-

(3840 1.04−1450) 4.5

(3840 1.04−1450) 3.5

11446

8903

indicated in the table

No. 3

b) an increase in the price of an analogue for pipes of steel grade

36NKHTYUMVI (EP-52VI):

Diameter, mm Wall thickness, mm Difference in metal cost Price increase in rub. for tn. Base of pipe billet prices

12−14

16−32

all walls

— «-

(6100 1.04−1450) 4.5

(6100 1.04−1450) 3.5

22023

17129

indicated in the table

No. 4


rev. 2 to TU 14−3-379−75

6

5.6.1. The basic price for the supply of thin-walled pipes is subject to a surcharge:

5.6.2. For multiple lengths, which is specified in the order (price list § No. 01−04−75, p. 297).

5.6.3. For particularly high accuracy in wall thickness and diameter (price list No. 01−04−75, p. 274).

5.6.4. For the test for ultimate tensile strength and elongation after aging (price list No. 01−04−75, p. 299).

5.6.5. For inspection of the inner surface of pipes with an inner diameter of 8.2 mm or more at the request of the consumer (price list No. 01−04−75, p. 299).

5.7. A discount for the supply of pipes without:

5.7.1. Electropolishing (price list No. 01−04−75, p. 255).

5.7.2. Tests for tensile strength, fluidity and relative elongation at 350 ° C for pipes of both steel grades and room temperature — for tensile strength and relative elongation only for pipes of steel grade 36NKHTYUM (price list No. 01−04−75, p. 299).

5.7.3. Tests on MCC (price list No. 01−04−75, p. 299).

5.7.4. Distribution tests (price list No. 01−04−75, p. 299).

5.7.5. Hydraulic testing or its guarantees (price list No. 01−04−75, p. 299).

5.8. When supplying pipes at the request of the consumer in a cold-worked condition, a discount is provided for the supply of pipes without:

5.8.1. Electropolishing (price list No. 01−04−75, p. 255).


rev. 2 to TU 14−3-379−75

7

5.8.2. Tests for grain size (price list No. 01−04−75, p. 299).

5.8.3. Flattening tests (price list No. 01−04−75, p. 299).

5.8.4. Curvature control (price list No. 01−04−75, p. 299).

REGISTERED

August 25, 1978

Head department of standardization

VNITI (V.P. Sokurenko)



Agreed: Developed by:

/ Chief Engineer of TsPKB Deputy Director of VNITI

«Teplopribor» E.A. Bliznyukov

ZG Blumstein «25» 08 1978

«25» 08 1978 Chief Engineer TOEZ VNITI

A.V. Chub

«25» 08 1978


Ministry of ferrous metallurgy of the USSR

UDC

Group B62


Agreed: Approved:

Chief Engineer Soyuzprompribor Chief Engineer VPO Soyuztrubo-

USSR Ministry of Instrument Steel

I.A. Gukalenko V.A. Tkachenko

«7»… 1978 «8» VIII 1978

Manometric pipes made of dispersion

hardening alloys 36NKhTYu (EI-702)

36NKHTYUM (EP-51), 42NKHTYu

Technical conditions

TU 14−3-379−75

Change No. 3

STATE COMMITTEE OF STANDARDS
USSR Council of Ministers
Registered and entered in the register
state standards
10.11.78 No. 137237

The term of introduction is from 01.12.1978.

1. Table 1 of clause 1.1. supplemented with a size of 0.5x1.0 mm.

Clause 1.2. supplemented by Note:

«Note: By agreement of the parties, it is allowed to supply pipes

length exceeding those specified in clause 1.2. «

Agreed: Developed by:

/ Chief Engineer of TsPKB Deputy Director of VNITI

«Teplopribor» E.A. Bliznyukov

ZG Blumstein «04» 09 1978

«5» 05 1978 Chief Engineer TOEZ VNITI

Head of the enterprise A.V. Chub

mailbox M-6191 «24» 03 1978

I. V. Zvershkhovsky

04 04 1978

REGISTERED

September 05, 78

Head department of standardization

VNITI (V.P. Sokurenko)

80.1126

MINISTRY OF FERROUS METALLURGY OF THE USSR

UDC 669.14−462.3−415

Group B-62


Agreed: Approved:

Chief Engineer Soyuzprompribor Chief Engineer VPO Soyuztrubo-

USSR Ministry of Instrument Steel

I.A. Gukalenko V.A. Tkachenko

October 16, 1980 «…»… 1980

Manometric pipes made of dispersion

hardening alloys 36NKhTYu (EI-702)

36NKHTYUM (EP-51), 42NKHTYu

Technical conditions

TU 14−3-379−75

Change No. 4

STATE COMMITTEE OF STANDARDS
USSR Council of Ministers
Registered and entered in the register
state standards
06.11.76 No. 212541

The term of introduction is from 01.02.1981.

1. The validity period of TU 14−3-379−75 was extended until November 1, 1985.

2. Table 1 of clause 1.1. supplemented with dimensions хmm; хmm; хmm; хmm; хmm.

3. Clause 2.10. set out in the wording:

«2.10. The ends of the pipes must be cut and deburred. «

4. In clause 3.5. references to GOST 12344−66, GOST 12346−66, GOST 12347−66, GOST 12348−66, GOST 12350−66 have been replaced respectively by GOST 12344−78, GOST 12346−78, GOST 12347−77, GOST 12348−78, GOST 12350−78.


Change 4 to TU 14−3-379−75

2.

5. In clause 3.8. the reference to GOST 8695−58 has been replaced by GOST 8695−75.

6. Clause 4.4. supplemented by subparagraph j):

«J) Degree of deformation and mode of the last heat treatment for cold-worked pipes.»

Agreed: Developed by:

Chief Engineer TsPKB Deputy director of VNITI

«Teplopribor» E.A. Bliznyukov

ZG Blumstein «25» 08 1978

«23» 09 1980 Chief Engineer TOEZ VNITI

A.V. Chub

«02» 10 1980

REGISTERED

«12» 10 1980

Head laboratory of specifications and normals

VNITI (M.M.Bernstein)


EXPLANATORY NOTE

to amendment No. 4 TU 14−3-3−379−75

The validity period of the technical conditions TU 14−3-379−75 was extended due to the availability of orders for manometric pipes made of alloy 36NKhTYu (EI-702) of all sizes, incl. and the sizes specified in paragraph 2 of this amendment.

References to state standards specified in clauses 3.5 and 3.8 of TU 14−3-379−75 have been replaced due to the expiration of their validity period.

Clause 2.10 of the technical specifications has been changed due to the absence of a measuring tool that controls pipe trimming for 90with precisely specified maximum deviations.

Ch. plant engineer A.V. Chub


MINISTRY OF FERROUS METALLURGY OF THE USSR

OKP 136.300 UDC 669.14−462.3−415

Group B-62

Agreed: Approved:

Chief Engineer Soyuzprompribor Chief Engineer VPO Soyuztrubo-

USSR Ministry of Instrument Steel

L.N. Akafopodov V.A. Tkachenko

«26» 11 1984 «28» 12 1984

MANOMETRIC PIPES FROM DISPERSION-

HARDING ALLOYS 36NKHTYU (EI-702),

36NKHTYu5M (EP-51), 42NKHTYu

Technical conditions

TU 14−3-379−75

Change No. 5

Introduction period: 01.10.85.

Agreed: Developed by:

Chief Engineer TsPKB Deputy director of VNITI

«Teplopribor» E.A. Bliznyukov

ZG Blumstein «25» 08 1984

«11» XI 1984 Chief Engineer of TOEZ VNITI

A.V. Chub

«22» 10 1984

REGISTERED AND LISTED IN THE REGISTER

STATE REGITATION

85.08.15 140440/05

1985

2

1. The validity period of the technical conditions shall be extended until 01.11.89.

2. The name shall be stated in the wording: «Manometric pipes made of dispersion-hardening alloys 36NKhTYu (EI-702), 36NKhTYu5M-VI (EP-51VI), 42NKhTYu».

3. In the text of technical specifications, the designation of alloy 36NKhTYu5M (EP-51) shall be changed to 36NKhTYu5M-VI (EP-51VI).

4. Introductory part. The first paragraph shall be stated in the wording: «These technical conditions apply to the supply of cold-worked seamless thin-walled and extra-thin-walled pipes made of precipitation-hardening alloys 36NKhTYu (EI-702) and 36NKhTYu5M-VI (EP-51VI), manufactured from limit pipes according to TU 14−3-1238- 83 and TU 14−242−221−83, respectively, 42НХТЮ, made from a workpiece according to GOST 2590−71.

5. Clause 3.4. State the second paragraph in the wording: «Control of the pipe wall thickness is carried out from the ends of the pipe at least in three places with an MT GOST 6507−78 micrometer or on samples at least 50 mm long cut along the generatrix with a MVM GOST 4380−78 micrometer. Samples are taken from 3% of the pipes in the batch, but not less than the required pipes. «

6. Clause 3.5. Replace references GOST 12345−66 with GOST 12345−80, GOST 12352−66 with GOST 12352−81, GOST 12354−66 with GOST 12354−81, GOST 12356−66 with GOST 12356−81.

7. Clause 3.6. Replace the reference GOST 5639−65 with GOST 5639−82.

8. Clause 3.7. Replace the reference GOST 10006−73 with GOST 10006−80.

9. Clause 3.9. Replace the reference GOST 6032−58 with GOST 6032−75.

10. Clause 4.3. State in the wording: «Finished pipes are packed in boxes made in accordance with the requirements of GOST 2991−76, GOST 5959−80 and design documentation approved in the prescribed manner. The pipes must be packed to ensure their cleanliness and safety during transportation. «

11. Section 4. Supplement with clause 4.5.

«4.5. Other requirements for labeling, packaging and transportation in accordance with GOST 10692−80. «

12. Section 5 should be excluded from the technical specifications.

13. To supplement the technical conditions with appendix 1, 2, 3, 4.

REGISTERED

«16» 07 1985

Head department laboratory

VNITI (V.P. …)

Rev. 5 C

TU 14−3-379−75

sheet 2

3.

Appendix 1.

Reference

to TU 14−3-379−75

SCROLL

documents referenced in

technical conditions

Designation Name

TU 14−242−221−83

TU 14−3-1238−83

GOST 10994−74

GOST 12344−78

GOST 12345−80

GOST 12346−78

GOST 12347−77

GOST 12348−78

GOST 12350−78

GOST 12352−81

GOST 12354−81

GOST 12356−81

GOST 12357−66

GOST 5639082

GOST 10006−80

GOST 6032−75

GOST 8695−75

GOST 10692−80

Seamless pipes of steel grade 36NKhTYu5M-VI

(EP 51-VI).

Seamless tubes of stainless steel grades and alloys.

Precision alloys. Stamps.

Alloyed and high-alloyed steels. Methods for the determination of carbon.

Alloyed and high-alloyed steels. Methods for the determination of sulfur.

Alloyed and high-alloyed steels. Methods for the determination of silicon.

Alloyed and high-alloyed steels. Methods for the determination of phosphorus.

Alloyed and high-alloyed steels. Methods for the determination of manganese.

Alloyed and high-alloyed steels. Methods for the determination of chromium.

Alloyed and high-alloyed steels. Methods for the determination of nickel.

Alloyed and high-alloyed steels. Methods for the determination of molybdenum.

Alloyed and high-alloyed steels. Methods for the determination of titanium.

Alloyed and high-alloyed steels. Methods for determination of aluminum content.

Steels and alloys. Methods for identifying and determining the size of the grain.

Metal pipes. Tensile test method.

Steels and alloys. Test methods for intergranular corrosion of ferritic austenitic-martensitic, austenitic-ferritic and austenitic corrosion-resistant steels and alloys based on iron-nickel.

Pipes. Flattening test method.

Cast iron steel pipes and connecting parts to them. Marking, packaging, transportation and storage.

sheet 10

4.

Designation Name

GOST 5959−80

GOST 2991−76

GOST 6507−78

GOST 4380−78

GOST 2590−71

Non-collapsible boxes made of wood-based panels for loads weighing up to 200 kg.

General technical conditions.

Non-separable plank boxes for loads weighing up to 500 kg.

General technical conditions.

Micrometers with a graduation of 0.01 mm.

Technical conditions.

Micrometers with inserts. Technical conditions.

Hot rolled round steel. Range.

TU 14−3-379−75

sheet 11

Copy

Appendix 2

Mandatory

to TU 14−3-379−75

PROCEDURE OF PAYMENT FOR PRODUCTS

Manometric pipes from dis-

persion-hard alloys

36NKHTYu (EI-702), 36NKHTYu5M (EP-51),

42НХТЮ

1. An analogue for determining the base price for pipes with a wall of 1.5 mm or less, supplied according to these specifications, are extra-thin-walled pipes made of corrosion-resistant steel grade 06X18H10T in accordance with GOST 10498−82 (pr-t 01−13−80, p. 153).

2. The basic price for seamless extra-thin-walled pipes made of dispersion-hardening alloys of the 36NKhTYu (EI-702) and 36NKhTYuM-VI (EP-51VI) type is determined based on the list price of the corresponding or the nearest smaller sizes of analogue pipes made of 06X18N10T steel, increased by the difference in price pipe billets of corresponding diameters from alloy 36NKHTYu (EI-702) as per TU 14−1-2554−78, alloy 36NKHTYu5M-VI (EP-51VI) as per TU 14−1-2554−78 and steel of the analogue grade 06Kh18N10T as per TU 14−1 -2776−79, multiplied by the standard consumption factors in accordance with the price list 01−13−80. tab. No. 32.3, p. 178.

3. The base price is subject to charges for the supply of pipes:

3.1. Multiple length — 4% (pr-t 01−13−80, p. 189).

3.2. Tightening of the curvature norms for pipes with a diameter of up to 5 mm — 17.5% for pipes with a diameter of 5 to 10 mm — 2.5% (pr-t 01−13−80g., P. 190).

3.3. Particularly high accuracy in wall thickness — 15% (pr-t 01−13−80g. P. 178).

3.4. Above extra high accuracy in wall thickness for pipes with a wall of 1.2 mm — 15% for pipes with a wall of 1.4 mm — 10% (protocol no. 10/85).

3.5. High precision with a diameter from 6 mm to 32 mm with a wall thickness of 0.6 mm — 10% (pr-t 01−13−80 p. 178).

sheet 12

2.

3.6. Above extra-high accuracy in diameters ranging from 11 to 16 mm inclusive, wall thickness from 0.6 mm to 1.0 mm — 10% (protocol No. 10/85) in diameter 4 mm — 4.5 mm with wall thickness up to 0.5 mm inclusive — 7.5% (protocol No. 10/85).

3.7. With one-sided maximum deviations — 4% (pr-t 01−13−80, p. 195).

3.8. With a test for tensile strength — 1% (pr-t 01−13−80g. P. 192) — 1%.

4. Discounts for the supply of pipes are presented from the base price:

4.1. Without testing for non-metallic inclusions — 1% (pr-t 01−13−80, p. 193).

4.2. With electropolished, polished outer surface — 20% (pr-t 01−13−80, p. 178).

4.3. With an etched polished outer surface and an etched electropolished surface — 22% (pr-t 01−13−80, p. 178).

4.4. With etched polished outer and etched inner surfaces (pr-t 01−13−80 p. 178) — 42%.

4.5. With etched outer and inner surfaces — 67% (pr-t 01−13−80 p. 178).

4.6. At the request of consumers in cold-worked condition — 0.7% (pr-t 01−13−80, page 178).

4.7. With weakening of the maximum deviations for the diameter of the dimensions Ø 7−10 mm with a wall up to 0.5 mm inclusive — 2.5% (protocol No. 10/85);

Ø 11 — 16 mm with a wall up to 0.5 mm inclusive — 15% (protocol No. 10/85);

Ø 20 — 32 mm with a wall up to 0.5 mm inclusive — 35% (protocol No. 10/85).

4.8. Without control periscope — 1% pr-t 01−13−80 p.192.

4.9. Without hydrotesting — 1% (pr-t 01−13−80, page 192).

4.10. Without pneumatic tests for pipes with a diameter of 10 mm or less (pr-t 01−13−80 p.192) — 1%.

4.11. Without standardization of curvature for pipes in cold-worked condition — 3% (pr-t 01−13−80, page 190).

4.12. Without grain size tests, flattening, we can e cold-worked crystallite corrosion — 3%, for each type of test 1% (pr-t 01−13−80, page 192).

TU 14−3-379−75

sheet 13

3.

5. An analogue for determining the wholesale price for thin-walled pipes with a wall of 1.6 mm or more are pipes according to TU 14−3-218−80 (pr-t 01−13−80, tab. No. 31.1, p. 147).

6. The basic price for seamless thin-walled pipes made of precipitation-hardening alloys of the 36NKhTYu (EI-702) and 36NKhTYu5M VI (EP-51VI) type are determined based on the list price of the corresponding or the nearest smaller pipe sizes — analogues made of steel grade 06X18N10T-Sh, increased for the difference in the price of pipe billets of the corresponding diameters from 36NKhTYu steel according to TU 14−1-2554−78, 36NKhTYu MVI alloy according to TU 14−1-658−73 and analogue steel 06H18N10T-Sh according to TU 14−1-605−73 multiplied by the standard consumption coefficients of the metal in accordance with table 31.3.

7. The base price is subject to a surcharge for the supply of pipes:

7.1. Multiple length — 4% (pr-t 01−13−80, p. 189).

7.2. Above high accuracy in diameter 10 mm — 3%;

in diameter 12−15 mm — 2%;

in diameter 20−32 mm — 6%

(protocol of surcharges and discounts No. 10/85).

7.3. Above high accuracy in wall thickness 1.6 — 1.8 mm — 14% (protocol of surcharges and discounts No. 10/85).

7.4. With a one-sided maximum deviation — 4% (pr-t 01−13−80, p. 195).

8. A discount is provided for the supply of pipes from the base price:

8.1. Without testing pipes for metal inclusions — 1% (pr-t 01−13−80, p. 192).

8.2. Without testing for distribution — 1% (pr-t 01−13−80, p. 192).

8.3. Without hydraulic test — 1% (pr-t 01−13−80, p. 192).

8.4. Without electropolishing — 56% (pr-t 01−13−80, p. 152).

8.5. With an electropolished outer surface and an etched inner surface — 26% (pr-t 01−13−80, p. 152).

8.6. With an electropolished inner surface — 30% (pr-t 01−13−80, p. 152).

8.7. At the request of consumers in cold-worked condition — 0.7% (pr-t 01−13−80, p. 191).

8.8. Without standardization of curvature for pipes in cold-worked condition — 3% (pr-t 01−13−80, p. 190).

TU 14−3-379−75

sheet 14

4.

8.9. Without testing for grain, flattening, intercrystalline corrosion for pipes in the cold-worked state — 3%, 1% for each type (tests pr-t 01−13−80, page 192).

Chief Engineer of the Central Design Bureau Chief Engineer of the SEZ VNITI

«Teplopribor» A.V. Forelock

ZG Blumstein «26» 02 1985

«19» 02 1985

Deputy director of VNITI

V. I. Strizhak

«11» 07 1885

true: u / n

TU 14−3-379−75

sheet 15

Copy

AGREED: I APPROVE:

Chief Engineer TsPKB Director of SEZ VNITI

«Teplopribor» V.G. Chus

ZG Blumstein «26» 02 1985

«19» 03 1985

PROTOCOL NO. 10/85

agreeing surcharges to the wholesale price of pipes

manometric from precipitation-hardening

alloys 36NKhTYu (EI-702), 36NKhTYu5M (EP-51)

In accordance with clause 13 of the general instructions of the price list No. 01−13−1980, having considered the calculation of the supplier’s enterprise, it is considered agreed:

Name

products

Alloy grade TU For what are installed adj. Surcharge in%
1 2 3 4 five

1. Manometric pipes made of precipitation-hardening alloys with an outer diameter of 4 mm to 4.5 mm and a wall thickness of up to 0.5 mm inclusive

2. Pipes with an outer diameter of 6 mm to 32 mm with a wall thickness of 0.6 mm to 1.0 mm inclusive

3. Pipes with an outer diameter of 11 mm to 16 mm and a wall thickness of 0.6 mm to 1.0 mm

4. Pipes with a wall thickness of 1.2 mm

36НХТЮ

— «-

— «-

— «-

TU-14−3-379−75

— «-

— «-

— «-

Tighter outer diameter tolerance

— «-

— «-

Tighter wall thickness tolerance

7.5%

ten%

ten%

fifteen%

TU 14−3-379−75

sheet 16

2.

1 2 3 4 five

5. Pipes with wall thickness up to 1.4 mm

6. Manometric pipes made of precipitation-hardening alloys from 7 mm to 10 mm with a wall up to 0.5 mm will include.

with a diameter of 11−16 mm with a wall up to 0.5 mm inclusive;

with a diameter of 20−32 mm with a wall up to 0.5 mm inclusive.

Pipes with a wall of 1.6 mm or more for a diameter of 10 mm.

for diameters 12−16 mm

for diameters 20−32 mm

Wall pipes 1.6 mm — 1.8 mm

Pipes with a wall of 2 mm — 2.6 with a diameter of 16 mm — 30 mm

36НХТЮ

— «-

— «-

— «-

— «-

— «-

— «-

— «-

— «-

TU-14−3-379−75

— «-

— «-

— «-

— «-

— «-

— «-

— «-

— «-

Tighter outer diameter tolerance

relaxation of limit deviations in diameter

— «-

— «-

higher precision in diameter

— «-

— «-

higher precision in wall thickness

— «-

ten%

2.5% / discount /

15% / discounts /

35% / discounts /

3% approx.

2% approx.

6% approx.

14% surcharge

5% surcharge

Head of Planning

Department N.N.Bondarchuk

true: u / n

TU 14−3-379−75

sheet 17

Copy

Form No. 2

Appendix to TU 14−3-379075

Agreed:

Deputy Institute directors

IN AND. Strizhak /

«11»… 1983

ORDER

definition of standards for net production

mass (serial) production,

not included in the NPP price list.

1. Product name: Manometric pipes made of precipitation-hardening alloys 36NKhTYu (EI-702), 36NKhTYu5M (EP-51).

2. An analogue for determining the LSP of 1 running meter of pipes with a wall of 1.5 or less, manufactured according to these technical conditions, is the standard for clean production for pipes 06X18H10T in accordance with GOST 10498−82 of the corresponding dimensions (DP 01−13−1980 / 1 p. 132 issue No. 4 of NPP, tab. 32.1).

3. To the basic NPP, allowances are established for:

3.1. Extremely high accuracy on the wall — 10% (issue 6 NCHP page 7).

3.2. Delivery of pipes of multiple lengths — 6% (ibid page 7).

3.3. Tightening the curvature standards for pipes with a diameter of 5 mm to a diameter of 10 mm inclusive — 10% (DP No. 01−13−1980 / 1 NCHP p. 172).

3.4. With one-sided maximum deviations — 10% (issue of NPP No. 6, page 7).

3.5. With a test for ultimate tensile strength — 1% and elongation after aging — 1% (DP01−13−1980 / 1 NCHP p. 174).

4. A discount is provided for the supply of pipes from the basic LSP:

4.1. Without testing for non-metallic inclusions — 1% (additional pr-t 01−13−1980 / 1 NCHP p. 174).

4.2. With electropolished, polished outer surface and etched inner surface (without electropolishing) — 24% (NCHP issue No. 6, page 7).

4.3. With an etched polished outer surface and an etched electropolished inner surface — 23% (NCHP issue No. 6, page 7).

sheet 18

2.

4.4. With an etched polished outer surface and an etched inner surface — 47% (issue No. 6 NCHP, page 7).

4.5. With etched outer and inner surfaces — 67% (ibid.).

4.6. Cold-worked condition — 3% (ibid.).

4.7. Without periscope control — 1% (DP 01−13−1980 / 1 NCHP p. 147).

4.8. Without hydrotesting — 1 (ibid.) Without pneumatic testing for pipes Ø 10 mm and less — 1% (ibid.).

4.9. Without standardization of curvature for pipes in a rewarded state — 1% (ibid.).

4.10. Without tests for grain size, flattening, ICC in cold-worked state — 3%, 1% for each type of test (DP 01−13−1980 / 1 NCHP p. 174).

5. An analogue for determining the LF of 1 m of pipes with a wall of 1.6 mm and more, manufactured according to these technical conditions, is the standard for clean production for pipes 06X18H10T-Sh according to TU 14−3-218−80 of the corresponding dimensions (DP pr-t 01- 13−1980 / 1, page 123. Table 31.1).

6. To the base NPP surcharges are set for the supply of pipes:

6.1. Multiple length — 6% (additional pr-t 01−13−1980 / 1 NCHP p. 170).

6.2. With one-sided maximum deviations — 10% (issue 6 NCHP page 5).

7.Discounts for the supply of pipes are established from the basic NPP:

7.1. Without testing for non-metallic inclusions — 1% (additional pr-t 01−13−1980 / 1 NCHP p. 174).

7.2. Without distribution tests — 1% (ibid.).

7.3. Without hydraulic test — 1% (ibid.).

7.4. Without electropolishing — 76% (DP pr-t 01−13−1980 / 1).

7.5. With electropolished outer and etched inner surfaces — 38%.

7.6. With electropolished inner surface — 38%.

7.7. At the request of the consumer in cold-worked condition — 3%.

7.8. Without standardization of curvature for pipes in cold-worked condition — 3% (add. Pr-t 01−13−1980 / 1 NCHP p. 172).

7.9. Without grain tests, flattening intercrystalline corrosion for pipes in cold-worked state — 3% (1% for each type of tests DP pr-t 01−13−1980 / 1 NCHP p. 174).

Plant director V.G. Chus

true: u / n

TU 14−3-379−75

sheet 19

Appendix 3

Reference

to TU 14−3-379−75

SCROLL

measuring instruments used to control

pipes

Measuring instrument name A TYPE Measurement limit, mm Graduation, mm Designation of NTD for a measuring instrument Measured parameter

Micrometer smooth

Tube micrometer

Threaded micrometer

Calibration ruler

Probe

Measuring tape

Magnifier

Tearing machine

Express analyzer

— «-

MK

MT

MVM

SD

No. 4 class 2

ZPK2−2ANT / 1

-

different brands

AN-160

AN-29

0−25

0−25

0−25

1000

0.1−1

1−2000

-

-

0.001 to 2%

0.03 to 2%

0.01

0.01

0.01

-

-

1

-

-

GOST 6507−78

GOST 6507−78

GOST 4380−78

GOST 8026−75

GOST 882−75

GOST 7502−80

-

-

diameter

wall thickness

wall thickness

curvature

curvature

length

outside surface

fur. properties

chem. metal analysis

chem. metal analysis

sheet 20

Appendix 4

Mandatory

CHANGE REGISTRATION SHEET

TU 14−3-379−75

VIFS No. 140440 dated 03.09.75

Name of the document containing the change Industry registration date List of items of technical conditions to which changes apply Date and number of state registration

Amendment letter No. 153/3882

Amendment letter No. 153/10274

Change No. 1

Change No. 2

Change No. 3

Amendment letter No. 153/1249

Amendment letter No. 153/2081

Change No. 4

04.22.77

11/15/77

06.12.77

08/25/78

09/05/78

02.02.79

02/23/1979

22.10.80

Table 1

Clause 1.1.

Clause 1.3., Table 1, Clause 2.11., Clauses 2.7. and 2.8.

Introductory part, section 5

Clauses 1.1., 1.2.

Changed the designation of alloy grade 30NKhTYuM (EP-51) to 30NKhTYu5M (EP-51)

Table 1

Clauses 1.1., 2.10., 3.5., 3.6., 4.4.

01.16.78 No. 114007

08/29/78 No. 134743

11/10/78 No. 137287

16.12.80 # 202541

sheet 21

MINISTRY OF FERROUS METALLURGY OF THE USSR

OKP 136300 UDC 669.14−162.3−145

Group B-62

APPROVED

Director of NPO «VNITI»

V.V.Sergeev

"19»… 1989

MANOMETRIC PIPES FROM DISPERSION-

HARDING ALLOYS 36NKHTYU (EI-702),

36NKHTYu5M-VI (EP-51 VI), 42NKHTYu

TECHNICAL CONDITIONS

TU 14−3-379075

Change No. 7

Introduction date: 01.10.89

AGREED DEVELOPED

Chief Engineer Deputy director

Central Design Bureau «Teplopribor» NPO «VNITI»

G.G. Osetrov V.P. Sokurenko

«6» 07 1989 «14» 07 1989

Chief Engineer

SEZ NPO «VNITI»

V. N. Chekha

«31» 05 1989

89.08.25

Ukrainian Republican Administration

Gosstandart

DNEPROPETROVSK CENTER

STANDARDIZATION AND METROLOGY

Registered on «24» 07 89.

According to the accounting book under No. 140443/07

1989

Amendment 7 TU 14−3-379−75

l.2

1. From the name and text of TU, exclude the brands of alloys 36NKhTYu (EI-702) and 42NKhTYu.

2. Wholesale prices according to Appendix 2.

Expertise accepted

Head department of standardization

VNITI V.P. Verepa

Date 04/17/89


MINISTRY OF FERROUS METALLURGY OF THE USSR

OKP 136300 UDC 669.14−162.3−415

Group B-62

APPROVED

Director of NPO «VNITI»

V.V.Sergeev

«9» 10 1989

MANOMETRIC PIPES FROM DISPERSION-

HARDENING ALLOY 36NKHTYU5M-VI (EP-51 VI)

TECHNICAL CONDITIONS

TU 14−3-379−75

Change No. 8

Holder of the original SEZ NPO VNITI

Introduction date: 01.11.89

AGREED DEVELOPED

Chief Engineer Deputy Director of NPO «VNITI»

Central Design Bureau «Teplopribor» V.P. Sokurenko

G.G.Osetrov «09» 10 1989

«" 1989

Chief Engineer Chief Engineer

Southern Pipe Plant SEZ NPO VNITI

V.P. Krykhta V.N. Chekha

«28» 09 1989 «31» 05 1989

1989 89.12.15

Ukrainian Republican Administration

Gosstandart

DNEPROPETROVSK CENTER

STANDARDIZATION AND METROLOGY

Registered «12» 10 89.

According to the accounting book under No. 140440/08

Amendment No. 8 TU 14−3-379−75

l.2

1. The SEZ VNITI is excluded from the title page of the technical specifications.

2. Yuzhnotrubny plant was added to the title page of technical specifications under the heading «Approved».

3. The term of validity of the technical conditions has been extended until 01.06.95.

4. Introductory part. To state in the edition: «These technical conditions apply to seamless cold-worked thin-walled and extra-thin-walled pipes made of precipitation-hardening alloy 36NKhTYu5M-VI (EP 51-VI).

The pipes are intended for use as a blank in the manufacture of elastic sensitive elements of devices of high accuracy and increased reliability.

Pipes are made from billets supplied according to TU 14−1-2554−78, bored and turned after hot processing.

Examples of symbols: «Pipes of group A with an outer diameter of 10 mm with a wall thickness of 1 mm, multiple of 400 mm in length, made of steel grade 36NKhTYu5M-VI (EP 51-VI):

Pipe A 10x1x400kr — EP 51-VI TU 14−3-379−75.

The same, groups B of unmeasured length:

Pipe B 10x1 — EP 51-VI TU 14−3-379−75.

5. Clauses 1.6, 2.5, 3.9 are excluded from the text of the technical specifications.

6. Clause 2.3. set out in the wording: «The mechanical properties of pipes made of alloy grade 36NKhTYu5M-VI (EP 51-VI) must be at least as shown in Table 2».

table 2

Group

Ultimate tensile strength after aging at 675 + 720 ° C , N / (kgf / )

Elongation at 675 + 720 ° C δ 5,%

AND

B

1079 (110)

1373 (140)

nine

nine

7. Clause 2.11 is set out in the wording: «Pipes of group A must withstand the flattening test without cracking up to the gap between flattening surfaces equal to 2 nominal wall thicknesses for wall thicknesses up to 1 mm and 3 nominal wall thicknesses for a wall thickness of 1 mm and higher.

Group B pipes must withstand the flattening test without cracking up to a gap between flattening surfaces equal to 5 nominal wall thicknesses for all pipe sizes. «

8. Clause 3.4. supplemented by subparagraphs 3.4.1 and 3.4.2:


Amendment No. 8 TU 14−3-379−75

l. 3

«3.4.1. The curvature of pipes is measured with a ruler of the type ShchD according to GOST 8026−75 1000 mm long, second class of accuracy and a probe according to TU 2−034−225−87, by comparison with a measure.

3.4.2. The length of the pipes is controlled with a metal tape measure, type ZPK2−10ANT / 1 (R3−10) in accordance with GOST 7502−80, by the method of direct assessment. «

Replacement reference: GOST 4380−78 to GOST 4380−86.

9. Clause 3.5. Replacement reference: GOST 12357−66 to GOST 12357−84.

10. Clause 3.10.2. The words: «and for intergranular corrosion.»

11. Clause 4.3. Replacement reference: GOST 2991−76 to GOST 2991−85.

12. Appendix 1 «List of documents to which there are references in the text of technical specifications»:

Replaced references: GOST 2991−76 to GOST 2991−85;

GOST 4380−78 to GOST 4380−86;

GOST 12357−66 to GOST 12357−84.

Excluded reference: to GOST 6032−75

Add:

GOST 7502−80 «Metallic measuring tapes. Technical conditions «

GOST 8026−75 «Calibration rulers. Technical conditions «

TU 2−034−225−87 «Probes. Models 82002, 82102, 82202, 82302 «

TU 14−1-2554−78 «Pipe billet for seamless thin-walled pipes from 36NKhTYu alloys

(EI 702) and 36NKHTYu5M-VI (EP 51-VI) «

13. Appendix 3 «List of measuring instruments used to control pipes» is excluded from

the text of the technical conditions.

14. Wholesale prices according to Appendix 2.

Expertise accepted

Head department of standardization

VNITI V.M. Virona

Date 9.10.89






EXPLANATORY NOTE

to amendment No. 8 TU 14−3-379−75 «Manometric pipes

made of precipitation-hardening alloy 36NKHTYu5M-VI (EP 51-VI) «



The change was developed due to the expiration of the technical conditions and the need to extend them. Also in the change, references to outdated NTD have been replaced.

In connection with the exclusion of changes in 7 from TU for alloys of grades 36NKhTYu (EI 702) and 42NKhTYu, the only manufacturer of pipes made of alloy 36NKHTYu5M-VI (EP 51-VI) — Yuzhnotruyny Zavod — was introduced into TU. Also, for this brand (EP 51-VI), mechanical properties, acceptance rules and test methods, and the amount of flattening have been specified. The complex of refined properties allows one to obtain equivalent performance properties of groups A and B.

And about. chief engineer of the plant I.P. Ostrovsky


USSR Ministry of Metallurgy

OKP 136300 Group B-62

APPROVED

Deputy Director of NPO «VNITI»

V.P. Sokurenko

02 12 1991

MANOMETRIC PIPES FROM DISPERSION-

HARDENING ALLOY 36NKHTYU5M-VI (EP 51-VI)

TECHNICAL CONDITIONS

TU 14−3-379−75

Change No. 9

Original holder — YUTZ

The term of introduction is 01.01.92.

AGREED DEVELOPED

Head of Technical Department, YuTZ

Central Design Bureau «Teplopribor» GD Samoilenko

25 10

05 11 1991

Chief Engineer

Yuzhnotrubny plant 02/27/92

V.P. Krykhta

25 10 1991

11 12 91

140440/09

1991

p.2

Change No. 9 and TU 14−3-379−75

1. In the name of the technical conditions and in the introductory part, the steel grade 36NKhTYu (EI-702) has been restored.

2. Clause 2.3. Table 2 is stated as follows:

table 2

steel grade Group After aging 675 + 720 ° C Delivery status

Temporary tear resistance,

Relative extension,

%

Tensile strength,

Relative extension,

%

not less

36NHTYu5M-VI

(EN51-VI)

AND

IN

1079 (110)

1373 (140)

nine

nine

-

-

-

-

36НХТЮ

(EI-702)

- 1275 (130) fifteen 686 (70) 32

3. Paragraphs 2.5 and 3.9 have been restored in the text of the technical specifications.

4. In clause 3.10.2. the words «and for intergranular corrosion» have been restored.

5. Appendix 1 «List of documents referenced in the text of technical specifications.»

Replaced references: GOST 6507−78 to GOST 6507−90, GOST 7502−80 to GOST 7502−89.

The link to GOST 6032−89 has been restored.

6. TU 14−3-379−75 supplemented by Appendix 2a in prices from 01.01.1991.


page 3

Appendix 2a

to TU 14−3-379−75

with changes 1−9

in prices from 01.01.1991

MANOMETRIC PIPES FROM DISPERSION-

HARDING ALLOYS 36NKHTYU (EI-702),

36NKHTYu5M (EP-51)

Payment procedure for products.

1. An analogue for determining the base price for pipes with a wall of 1.5 mm or less, supplied according to these specifications, are extra-thin-walled pipes made of corrosion-resistant steel grade 06X18H10T in accordance with GOST 10498−82 (pr-t 01−13−1989, Table 22.2).

2. The basic wholesale price for seamless extra-thin-walled pipes made of precipitation-hardening alloys of the 36NKhTYu (EI-702) and 36NKhTYuM-VI (EI-51VI) type is determined based on the list price of the corresponding or the nearest smaller sizes of analogue pipes made of steel grade 06X18N10T (Table 22.1), changed by the value — a surcharge for a steel grade, calculated according to the formula (sub-tabular text to table 22.1, pr-nt 01−13−89 / 2) taking into account prices for pipe billets according to TU 14−1-2554−78, TU 14 -1−2776−79.

3. The base price is subject to charges for the supply of pipes:

3.1. multiple length — 4% (pr-nt 01−13−1989, table 29.1);

3.2. with a tightening of the curvature norms for pipes with a diameter of up to 5 mm — 17.8%; for pipes with a diameter from 5 mm to 10 mm — 2.5% (ibid., Table 29.2);

3.3. especially high accuracy in wall thickness — 15% (there is also a subtable text to Table 22.2);

3.4. higher especially high accuracy in wall thickness for pipes with a wall of 1.2 mm — 15% for pipes with a wall of 1.4 mm — 10% (protocol No. 10−91);

3.5. extra-high accuracy with a diameter of 6 to 32 mm with a wall thickness of 0.6 mm — 10% (ibid, subtable text to Table 22.2);


page 4

3.6. Above especially high accuracy in diameters ranging from 11 mm to 16 mm inclusive, wall thickness from 0.6 mm to 1.0 mm — 10% (protocol No. 10−91) in diameter 4 mm — 4.5 mm with wall thickness up to 0, 5 mm inclusive — 7.5% (protocol No. 10−91);

3.7. with one-sided marginal deviations — 4% (ibid., table);

3.8. with a test for ultimate tensile strength — 1% (pr-nt No. 01−13−1989) and relative elongation after aging (-1%), (ibid., Table 29.5).

4. Discounts for the supply of pipes are presented from the base price:

4.1. without testing for non-metallic, 3% are included (ibid., table);

4.2. with an electropolished, polished outer surface — 20% (under the table text to Table 22.2);

4.3. with an etched polished outer surface and an etched electropolished surface — 22% (ibid., under the table text to Table 22.2);

4.4. with etched polished outer and etched inner surfaces — 42%;

4.5. with etched outer and inner surfaces — 67% (ibid.);

4.6. at the request of consumers in cold-worked condition — 0.7%;

4.7. with weakening of the maximum deviations in diameter of dimensions 7−10 mm with a wall up to 0.5 mm inclusive — 2.5% (protocol No. 10−91), Ø 11−16 mm with a wall up to 0.5 mm inclusive — 15% (protocol No. 10−91, Ø 20−32 mm with a wall up to 0.5 mm inclusive — 35% (protocol No. 10−91);

4.8. without periscope control — 1% (ibid., Table 29.11);

4.9. without hydrotesting — 1% (ibid., table 29.11);

4.10. without pneumatic tests for pipes with a diameter of 10 mm and less — 1% (ibid., Table 29.11);

4.11. without standardization of curvature for pipes in cold-worked state — 3% (ibid., Table 29.2);


p.5

4.12. without grain size tests, flattening by 1%, intergranular corrosion 2.5% for pipes in the cold worked state — 2.5% (ibid., tables 29.11, 29.5).

5. An analogue for determining the wholesale price for thin-walled pipes with a wall of 1.6 mm or more are pipes according to TU 14−3-218−80 (pr-nt 01−13−1989, table 21.1).

6. The basic wholesale price for seamless thin-walled pipes made of precipitation-hardening alloys of the 36NKhTYu (EI-702) and 36NKhTYuM VI (EI-51VI) types are determined based on the list price of the corresponding or the nearest smaller pipe sizes — analogues made of steel grade 06X18N10T-Sh (Table 21.1), changed by the value of ΔU: — surcharge for the steel grade calculated by the formula (sub-table text to Table 21.1), taking into account the prices for pipe billets according to TU 14−1-2554−78 and 14−1-638−73 and according to TU 14−1-3935−85.

7. The base price is subject to a surcharge for the supply of pipes:

7.1. multiple length — 4% (ibid., Table 29.1);

7.2. higher precision in diameter 10 mm — 3%

in diameter 12−16 mm — 2%

in diameter 20−32 mm — 6%

(protocol of surcharges and discounts No. 10/91);

7.3. higher accuracy for wall thickness 1.6−1.8 mm — 14% (protocol of surcharges and discounts No. 10−31) pipes with a wall thickness of 2−2.6 mm with a diameter of 16 mm to 30 mm — 5% (protocol of surcharges and discounts No. 10−91);

7.4. with a one-sided maximum deviation of 4% (pr-nt 01−13−1989, table 29.12).

8. A discount is provided for the supply of pipes from the base price:

8.1. without testing pipes for non-metallic inclusions — 3% (in the same table, 29.11);

8.2. without distribution tests — 1% (ibid., Table 29.11);

8.3. without electropolishing — 58% (under the table text to Table 21.1);

8.5. with an electropolished outer surface and an etched inner surface — 20% (ibid.);


page 6

8.6. with an electropolished inner surface — 30% (ibid.);

8.7. at the request of consumers in a cold-worked condition — 0.7% (ibid., Table 29.4);

8.8. without standardization of curvature for pipes in cold-worked state — 3% (ibid., Table 29.2);

8.9. without grain test, flattening by 1%, intergranular corrosion 2.5% for pipes in the cold worked state (ibid., Tables 29.5, 29.11).

9. To wholesale prices, taking into account surcharges and discounts, a retention coefficient of 1.19 is applied, approved by the Decree of the State Committee for the Commission of the USSR dated December 29, 1990, No. 889 and a coefficient of increase in fixed wholesale prices of 1.25 for a limited volume of production, introduced from June 1, 1991, approved by the Resolution of the Cabinet of Ministers of the USSR of May 22, 1991. No. 271.

AGREED:

Head of the Central Design Bureau «Teplopribor» First Deputy

V. S. Usikov Director for Economics

Nikopol Yuzhnotrubny

factory

05.11 1991 B.P. Tsutsiev

25.10 1991


p.7

AGREED: I APPROVE:

Head of the Central Design Bureau «Teplopribor» First Deputy. director

V.S.Usikov on economics

B.P. Tsutsiev

18.05 1991

05.11 1991

PROTOCOL No. 10/91

agreeing surcharges to the wholesale price of pipes

manometric on dispersion-hardening

alloys 36NKhTYu (EI-702), 36NKhTYu5M (EP-51).

In accordance with paragraph 13 of the general instructions of the price list No. 01−13−1989, having considered the calculation of the supplier’s enterprise, it is considered agreed:

Product name Alloy grade TU What are the fees for Surcharge in%
1 2 3 4 five

1. Manometric pipes made of precipitation-hardening alloys with an outer diameter of 4 mm to 4.5 mm and a wall thickness of up to 0.5 mm

2. Pipes with an outer diameter of 6 mm to 32 mm with a wall thickness of 0.6 mm to 1.0 mm inclusive

3. Pipes with an outer diameter of 11 mm to 16 mm and a wall thickness of 0.6 mm to 1.0 mm

4. Pipes with a wall thickness of 1.2 mm

36НХТЮ;

36NKHTYu5M

— «-

— «-

— «-

TU-14−3-379−75

— «-

— «-

— «-

Tighter outer diameter tolerance

— «-

— «-

Tighter wall thickness tolerance

7.5%

ten%

ten%

fifteen%


page 8

1 2 3 4 five

5. Pipes with wall thickness 1.4 mm

6. Manometric pipes made of precipitation-hardening alloys with a diameter of 7 mm to 10 mm with a wall up to 0.5 m incl.

with a diameter of 11−16 mm with a wall up to 0.5 mm inclusive;

with a diameter of 20−32 mm with a wall up to 0.5 mm inclusive.

Pipes with a wall of 1.6 mm or more for a diameter of 10 mm.

for diameters 12−16 mm

for diameters 20−32 mm

Wall pipes 1.6 mm — 1.8 mm

Pipes with a wall of 2 mm — 2.6 with a diameter of 16 mm — 30 mm

— «-

36НХТЮ

— «-

— «-

— «-

— «-

— «-

— «-

— «-

— «-

TU-14−3-379−75

— «-

— «-

— «-

— «-

— «-

— «-

— «-

— «-

relaxation of limit deviations in diameter

— «-

higher precision in diameter

— «-

— «-

higher precision in wall thickness

— «-

ten%

2.5% (discount)

15% (discounts)

35% (discounts)

3% approx.

2% approx.

6% approx.

fourteen%

5% approx.

Head of the laboratory V. I. Kryzhanovsky

pricing


ALL-UNION

SCIENTIFIC RESEARCH

AND DESIGN AND TECHNOLOGICAL

INSTITUTE

PIPE INDUSTRY

— VNITI —

320600.Dnepropetrovsk. five

st. Pisarzhevsky, 1a

Tel. 45−88−3-50. Teletanp 1282

04.22.77 No. 153/3882

On No. from



AMENDMENT LETTER

to the technical specifications TU 14−3-379−75 «Pipes

manometric from precipitation-hardening

alloys 36NKhTYu (EI-702), 36NKhTYuM (EP-51),

42НХТЮ «.

Table 1 of clause 2.1 is supplemented with dimensions 15x1.0;

15x0.3; 13x0.3; 11x0.3; 7.5x0.4 mm.

Reason: letter from TOEZ VNITI No. T3−794 dated 04/08/1977,

PO Box A-1672 No. 58 / SN-43 dated 08.31.76, PO Box B-6451

No. 5910 / 11−16 of 30.01.77.

/ Deputy Director A.A. Shevchenko

Kovaleva 6−92

TL 5 11.04.77

09.21.77 112942

ALL-UNION

SCIENTIFIC RESEARCH

AND DESIGN AND TECHNOLOGICAL

INSTITUTE

PIPE INDUSTRY

— VNITI —

320600.Dnepropetrovsk. five

st. Pisarzhevsky, 1a

Tel. 45−88−3-50. Teletanp 1282

15.10.77 No. 153/10274

On No. from



AMENDMENT LETTER

to the technical specifications TU 14−3-379−75 «Pipes

manometric from dispersion

hardening alloys 36NKhTYu (EI-702),

36NKHTYUM (EP-51), 42NKHTYu «.

Clause 1.1. supplemented with the phrase: «The density of the EI-702 alloy is 7.9 g / .

Reason: letter from YuTZ No. 02−14--3489 of 13.10.77.

Deputy Director of the Institute A.A. Shevchenko.

01.16.78 114056