GOST 4986-79

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  ГОСТ 4986-79

GOST 4986−79 cold-rolled strips of corrosion-resistant and heat-resistant steel. Specifications (with Amendments No. 1, 2, 3)

GOST 4986−79

Group B34

INTERSTATE STANDARD

COLD-ROLLED STRIPS OF CORROSION-RESISTING AND HEAT-RESISTANT STEEL

Specifications

Cold rolled strips of corrosion-resistant and heat-resistant steel. Specifications

OKP 12 3100

Date of introduction 1980−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 16.04.79 N 1388

3. REPLACE GOST 4986−70

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	Item number
GOST 166−89	5.2
GOST 427−75	5.2
GOST 2789−73	3.7, 5.12
GOST 2991−85	6.4, 6.4.1
GOST 3282−74	6.6
GOST 3560−73	6.6
GOST 4381−87	5.2
GOST 5632−72	3.2
GOST 6009−74	6.6
GOST 6032−89	5.13
GOST 6507−90	5.2
GOST 7502−98	5.2
GOST 7565−81	4.2
GOST 7566−94	4.1, 4.4, 6.1
GOST 8828−89	6.4, 6.4.1
GOST 9569−79	6.4, 6.4.1
GOST 10354−82	6.4.1, 6.6
GOST 10396−84	6.4, 6.4.1, 6.6
GOST 10510−80	5.10
GOST 11701−84	5.8
GOST 12344−88	5.1
GOST 12345−2001	5.1
GOST 12346−78	5.1
GOST 12347−77	5.1
GOST 12348−78	5.1
GOST 12349−83	5.1
GOST 12350−78	5.1
GOST 12351−81*	5.1
______________ * On the territory of the Russian Federation GOST 12351−2003. — Note the manufacturer’s database.
GOST 12352−81	5.1
GOST 12353−78	5.1
GOST 12354−81	5.1
GOST 12355−78	5.1
GOST 12356−81	5.1
GOST 12357−84	5.1
GOST 12358−82*	5.1
______________ * On the territory of the Russian Federation GOST 12358−2002. — Note the manufacturer’s database.
GOST 12359−99	5.1
GOST 12360−82	5.1
GOST 12361−82*	5.1
______________ * On the territory of the Russian Federation GOST 12361−2002. — Note the manufacturer’s database.
GOST 12362−79	5.1
GOST 12363−79	5.1
GOST 12364−84	5.1
GOST 12365−84	5.1
GOST 13813−68	5.11
GOST 14019−80	5.9
GOST 14192−96	6.5
GOST 14253−83	6.4.1
GOST 16272−79	6.4.1
GOST 17745−90	5.1
GOST 21650−76	6.7
GOST 24597−81	6.4.2
GOST 28473−90	5.1

5. Limitation of actions taken by Protocol No. 4−93 of the Interstate Council for standardization, Metrology and certification (ICS 4−94)

6. EDITION with Amendments No. 1, 2, 3 approved in December 1981, April 1985, June 1989 (ICS 3−82, 7−85, 11−89)

Amended, published in IMS No. 7, 2004, IUS N 6, 2007

The amendments made by the manufacturer of the database


This standard applies to cold rolled strip in coils from high corrosion-resistant and heat-resistant steel grades 20X13, 30CH13, 12H13, 20KH13N4G9, 09KH15N8JU1, 08KH17N5M3, 12H21N5T, 15KH18N12S4TJU, 12H17G9AN4, 10X17H13M2T, 10H17N13M3T, 12H18N9, 17H18N9, 08H18N10, 08CR18NI10TI, 12CR18NI10TI 12H18N10E, 03Х18Н12-VI, 20H23N18, 12H25N16G7AR, 06HN28MDT thickness of 0.05 to 2.0 mm and a width of from 6 to 410 mm.

1. CLASSIFICATION

1.1. The tape is divided:

— processing:

soft — M;

pawnagetool — PN,

nagaremono — N,

vysokolegirovannye — VN,

— referring to surfaces in groups 1, 2, 3;

— surface quality classes A, B, C, G, D, E;

— for precision manufacturing:

high precision W

increased accuracy — FRI,

normal precision — NT;

— edges:

edging — BUT,

edged — O.

(Changed edition, Rev. N 2).

2. ASSORTMENT

2.1. Tape thickness and limit deviation on thickness shall be as specified in table.1.

Table 1

In millimeters

The thickness of the strip	Pred. off.
	High precision (W)	Improved accuracy (PT)	Normal accuracy (NT)
0,05; 0,08	-0,010	-0,015	-0,02
0,10; 0,12; 0,15	-0,015	-0,02	-0,03
		-0,03	-0,04
0,20; 0,25	-0,02		-0,05
0,30	-0,03	-0,04	-0,06
0,35; 0,40; 0,45	-
0,50; 0,55; 0,60; 0,65		-0,05	-0,07
0,70; 0,75; 0,80; 0,90		-0,06	-0,08
1,00; 1,10; 1,20; 1,30		-0,08	-0,10
1,40; 1,50; 1,60		-0,10	-0,12
1,70; 1,80		-0,13	-0,15
1,90; 2,00		-0,16	-0,18

Notes:

1. At the request of the consumer tape is manufactured with bilateral marginal deviations in thickness with preservation the field of extreme deviations.

2. At the request of the customer can be manufactured tape intermediate sizes thickness with maximum deviations on the nearest larger size.

3. Soft tape group 3 is manufactured with a thickness of 0.10 mm and above.

4. (Deleted, Rev. N 3)


(Changed edition, Rev. N 1−3).

2.2. The tape is manufactured in rolls without welds and with welded seams. Belt length should be at least 10 m. it is possible to produce tape lengths from 1.5 to 10.0 m in colcheste not more than 10% of the batch weight.

The distance between welds in the tape must be at least 4 m, and for strips with thickness 1.5−2.0 mm — no less than 3 m.

The welding areas must be marked. Tape with a thickness of 0.3 mm or less, the weld mark on one side.

2.3. The tape is manufactured in the width from 10 till 410 mm with gradation of 5 mm.

Tape thickness to 1.0 mm and width up to 100 mm are made with a smaller gradation width, but not less than 1.0 mm.

At the request of the consumer edged ribbon is manufactured in widths from 6.0 to 10.0 mm.

2.4. The width of the cut strips and limit deviations on width depending on the thickness specified in table.2.

Table 2

In millimeters

Tape width	Pred. off. width when the thickness of the tape
	from 0.05 to 0.5 incl.	St. of 0.5 to 1.0, incl.	St. 1.0 and 2.0 incl.
6 100 incl.	-0,3	-0,4	-0,6
SV. 100 to 300 incl.	-0,5	-0,6	-0,8
SV. 300 to 410 incl.	-0,6	-0,8	A 1.0

Note. At the request of the consumer tape is manufactured with bilateral limit deviations on width preserving field limit deviations.


(Changed edition, Rev. N 2).

2.5. For edging tape limit deviations on width must match table.3.

Table 3

mm

Tape width	Pred. off. width
To 125 incl.	+1,9 -2,5
SV. 125 to 250 incl.	+3,1 -4,0
SV. 250	-10,0

2.6. At the request of the consumer edged ribbon manufactured with a camber of 1.0 m length not more than:

	3.0 mm	-	for	tape	width	to 50 mm;
	2.0 mm		«	«	«	over 50 mm.

2.7. Deviation from flatness on a piece of tape with a thickness of 1,0 m shall not exceed:

	3.0 mm	-	for	tape	width	less than 50 mm;
	5.0 mm		«	«	«	over 50 to 190 mm;
	10.0 mm		«	«	«	«190 mm.

In the manufacture of soft tape with a thickness of 0.2 mm and less width St 190 mm without training deviation from flatness shall not exceed 15 mm.

It is possible to manufacture a soft tape training.

Allowed uniform longitudinal deflection.

(Changed edition, Rev. N 3).

2.8. The inner diameter of the coils for tape thickness of 0.2 mm or more from 150 to 600 mm, for strips of thickness less than 0.2 mm not more than 400 mm.

In coordination with the consumer tape is manufactured with a predetermined internal diameter of the roll.

Examples of symbols

Cold-rolled steel strip of thickness 0.5 mm, width 100 mm, soft, normal precision cutting of steel 12H13, the third group, the surface of A class:

Tape 0,5H100-M-NT-O-12H13−3-GOST 4986−79

The same thickness of 0.2 mm, a width of 400 mm, Nagarjuna, high precision, timber of steel grades 12H18N9, the second group, the surface class G:

Tape 0,2x400-N-PT-BUT-12KH18N9−2-G GOST 4986−79

(Changed edition, Rev. N 2).

3. TECHNICAL REQUIREMENTS

3.1. The tape shall be manufactured in accordance with the requirements of this standard.

3.2. The chemical composition of the steel must correspond to GOST 5632. At the request of the consumer and 08X18H10 steel grades 12H18N9 residual mass fraction of titanium should be less than 0.2%.

3.3. In steel brand 03Х18Н12-VI mass fraction of oxygen should not exceed 0,006% of nitrogen — 0,03%, copper — by 0.2%.

3.4. The mechanical properties of soft tape shall be as specified in table.4.

Table 4

Steel grade	The mode of heat treatment	Mechanical properties
		Temporary resistance , N/mm (kgf/mm)	Elongation , %, for the tape thickness, mm
			0,2−2,0	less than 0.2
		not less than
12H13	Annealing or vacation 740−800 °C	440 (45)	17	9
20X13		490 (50)	16	8
30X13		540 (55)	15
20KH13N4G9	Hardening 1050−1080 °C, cooling in water or air	590 (60)	35	18
09KH15N8JU1	Normalization 1030−1070 °C	Not more than 1130 (115)	15	8
	* Normalization 975−1000 °C, cold treatment at -70 °C, exposure 2 h, the release of 400−500 °C, exposure 1 hour	1180 (120)	5	3
08KH17N5M3	Normalizing (1050±20) °C	Not more than 1130 (115)	16	8
	* Normalization (950±10) °C, cold treatment at -70 °C, exposure 2 h, the release of (450±10) °C, exposure 1 hour	1180 (120)	6	3
12H21N5T	Annealing 950−1050 °C, cooling in water or air	690 (70)	15	8
15KH18N12S4TJU	Quenching 1020−1050 NN the fire °C, cooling in water		25	13
12H17G9AN4	Hardening 1050−1080 °C, cooling in water or air	640 (65)	40	20
10X17H13M2T		530 (54)
10H17N13M3T
12KH18N9			35	18
17H18N9		570 (58)	34	17
08X18H10		530 (54)	40	20
12KH18N10T			35	18
08KH18N10T			40	20
12Х18Е10Е		Not more than 740 (75)	35	18
03Х18Н12-VI	Hardening 1050−1080 °C, cooling in water or air	390 (40)	40	20
20H23N18		570 (58)	38	19
12H25N16G7AR	Annealing 1050−1100 °C, cooling in water or air	690 (70)	30	15
06HN28MDT	Hardening 930−1050 °C, cooling in water	550 (56)	25	13

________________

* Determination of mechanical properties carried out on heat treated samples.


Notes:

1. The table shows the recommended heat treatment regime applied at the factory.

2. (Deleted, Rev. N 1).

3. At the customer’s request for the tape thickness of 0.5 mm and less steel 12H13 allowed a reduction of relative elongation of 2%.

4, 5. (Deleted, Rev. N 1).

3.5. Mechanical properties prolongational, hard and vysokokachestvennoj tape shall be as specified in table.5.

Table 5

Steel grade	Treatment	Mechanical properties
		Tensile strength , N/mm(kgf/mm)	Elongation , %, for the tape thickness, mm
			St. 0.2−2.0	0.2 and less than
		not less than
20KH13N4G9	Polonikova (PN)	780 (80)	16	8
	Nagarebana (N)	980 (100)	10	5
	Vysokokachestvennoj (EXT)	1130 (115)	6	3
09KH15N8JU1	Polonikova (PN)	980 (100)
	Nagarebana (N)	1270 (130)	4	2
15KH18N12S4TJU		830−1080 (85−110)	10	5
08KH17N5M3	Polonikova (PN)	1130 (115)	6	3
	Nagarebana (N)	1230 (125)	4	2
12H17G9AN4	Polonikova (PN)	810−980 (83−100)	30	15
	Nagarebana (N)	980 (100)	13	7
	Vysokokachestvennoj (EXT)	1180 (120)	5	3
12KH18N9	Polonikova (PN)	780 (80)	15	8
	Nagarebana (N)	980 (100)	5	3
	Vysokokachestvennoj (EXT)	1130 (115)	3	2
17H18N9	Polonikova (PN)	780 (80)	15	8
	Nagarebana (N)	980 (100)	5	3
	Vysokokachestvennoj (EXT)	1130 (115)	3	2
08X18H10	Polonikova (PN)	740 (75)	12	6
03Х18Н12-VI			5	3

Notes:

1. The mechanical properties determined for steel grades 09KH15N8JU1 and 08KH17N5M3 on cured samples according to the mode:

— for steel 09KH15N8JU1 — holiday (480±10) °C, exposure for 1 h,

— for steel 08KH17N5M3 — vacation (450±10) °C, exposure 1 hour

2. For steel grades not listed in table.5, norms of mechanical properties are in agreement with the consumer.

3. (Deleted, Rev. N 1).

4. At the request of the consumer nagarebana and vysokokachestvennoj tape can have a tensile strength of 50 N/mm(5 kgf/mm) less than specified in table.5.

5. At the request of the consumer for pawnagetool tape may reduce strength 30 N/mm(3 kgf/mm) with increasing elongation not less than 3%.

6. At the request of the consumer vysokolegirovannye strip of steel 12KH18N9 manufactured with a tensile strength of not less than 1180 N/mm(120 kgf/mm), elongation and twist is not normalized.

3.4, 3.5. (Changed edition, Rev. N 1, 2, 3).

3.6. The tape shall withstand without cracking, tears, delamination or fracture a number of excesses, no less:

2 — of hard and prolongational steel with a thickness of 0.2 mm or more;

3 — from hard and prolongational steel with a thickness of less than 0.2 mm;

5 — steel 15KH18N12S4TJU, hard;

7 — steel grade 15KH18N12S4TJU, soft.

At the request of the consumer for the ribbon of steel 12X18H10T, hard the number of bends shall be not less than three.

3.7. In appearance and surface quality of the tape should meet the requirements specified in table.6.

Table 6

Grup- PA- top- ness	Treatment	Class quality tion of pover- surface	The surface roughness of the churchyard 2789, parameter , µm, not more				Description surface	Name of permitted surface defects of the tape		Maxi maximum depth of defects
				the front side	the reverse side
1	Polonikova, Nagarjuna and vysokokachestvennoj	And B In	0,080 0,160 0,32			at the basic length 0.25 mm	Shiny without rabini and traces of Pererva with the slight difference of shades	At a length of 4 m, not more than two scratch length of 100 mm each and no more than four nicks a total area of up to 20 mm	Same as on the front side, but no more than four gentle sweeps	0,5 tolerances for thickness
		G	0,63			at the basic length 0.8 mm
2		And B In	0,080 0,160 0,32			at the basic length 0.25 mm		At a length of 4 m, not more than four scratches with a length of 150 mm each, no more than six nicks with a total area of up to 30 mmand flat Stripping
		G D	0,63 1,25			at the basic length 0.8 mm
3	Soft	And B In	0,080 0,160 0,32			at the basic length 0.25 mm	Silver-Matt or gloss without dross and Pererva with the slight difference of shades	Allowed some minor scratches, fingerprints, nicks and gentle Stripping, Rabina and traces of abrasive Stripping
		G D	0,63 1,25			at the basic length 0.8 mm
		E	Not normalized

Notes:

1. A soft strip of steel grades 12H13, 20X13, 30CH13, 12H21N5T, 08KH17N5M3, 20KH13N4G9, 09KH15N8JU1, 12H17G9AN4, 10X17H13M2T, 20H23N18, 15KH18N12S4TJU 10H17N13M3T, 06HN28MDT, 12H25N16G7AR in etched may have a matte gray surface color with different shades.

2. Surface quality soft tape is allowed to set as agreed with the consumer standards.

3. At the request of the consumer tape is manufactured without Stripping and clippings invalid defective areas. In this case, defective parts lead round a pencil and the weight subtracted from the total mass of the roll. The sweep of the defects on the tape all groups produce surfaces with fine abrasive without burning.

4. The surface roughness of the cleaned areas should be for tapes:

— 1st group — not more than 2.5 µm reference length of 0.8 mm;

— 2nd group — not more than 20.0 µm reference length of 2.5 mm.

5. Class surface quality indicated by the user. In the absence of specifying the class of surface quality is chosen by the manufacturer.

(Added, Rev. N 2).


(Changed edition, Rev. N 2).

3.8. On the edges of the cut strips should be no cracks, chipping, tears and bundles; allowed burrs with a value of not more than the maximum deviations in thickness of the tape.

On the edges of the edging strips are allowed flaw depth not exceeding the limit deviations on width. Edges may be irregularly rounded and uneven.

3.9. Steel grades 20KH13N4G9, 12H17G9AN4, 10X17H13M2T, 12KH18N9, 10H17N13M3T, 08H18N10, 08CR18NI10TI, 12CR18NI10TI 12H18N10E, 03Х18Н12-VI, 06HN28MDT should not be prone to intergranular corrosion.

3.10. Stratification in the tape is not allowed.

3.11. At the request of the consumer tape made:

3.11.1. soft steel brand 03Х18Н12-VI standards for the drawing depth of the spherical holes specified in table.7.

Table 7

In millimeters

The thickness of the strip	Height, not less
0,20	8,0
0,25	8,5
0,30	9,0
0,40	9,5
0,70	10,0

3.11.2. mild steel grades 12H13, 20X13, 30X13 with the bend test to the parallel sides around the mandrel with a thickness equal to the thickness of the tape;

3.11.3. with the regulation of the tendency to embrittlement of steel grade 12H21N5T. The increment of strength should be not more than 50% strength with a soft tape after provoking heating mode: heating to 550 °C, exposure for 1 h, furnace cooling at 100 °C/h to 300 °C, then air cooling;

3.11.4. with a polished or sanded surface;

3.11.5. without standardization of mechanical properties.

4. ACCEPTANCE RULES

4.1. The ribbon take parties. The party must consist of one of the metal trunks, one of treatment, one thickness, one group of surface and one type of edges, and soft tape the same batch furnaces and one heat treatment. The party must be accompanied by a document of quality according to GOST 7566.

By agreement with a consumer party may consist of multiple heats of the same brand.

4.2. To check the quality of the tape from the party is taken:

for control surfaces, shapes and sizes — each roll;

for chemical analysis according to GOST 7565;

— to determine the mass fraction of gas — three samples from the melt;

for tensile testing, embrittlement, bend, bend, hood spherical dimples, definition of surface roughness, as well as for testing susceptibility to intergranular attack — one roll from the party.

The tape, obtained by cutting one coil at the specified dimensions, taken as a single coil.

4.1, 4.2. (Changed edition, Rev. N 3).

4.3. The roughness of the tape and the stripped plots, kinks, camber and deviation from flatness, the manufacturer verifies periodically, but not less than once per month not less than two coils.

4.4. If unsatisfactory test results of at least one of the indicators, repeat tests performed on the sample selected according to GOST 7566.

(Changed edition, Rev. N 3).

5. TEST METHODS

5.1. Chemical composition of steel in the feed, and the content of oxygen, nitrogen and hydrogen in steel grade 03Х18Н12-VI makes sure the document about the quality of the manufacturer of the metal.

If necessary, carry out chemical analysis according to GOST 28473, GOST 12344*-GOST 12365, the gas content is determined according to GOST 17745.
______________
* On the territory of the Russian Federation GOST 12344−2003. — Note the manufacturer’s database.

5.2. The tape thickness is measured by micrometer according to GOST 6507, GOST 4381, the linear dimensions measured by tape according to GOST 7502, metal ruler according to GOST 427, the width of the cut strips up to 250 mm measured by Vernier caliper according to GOST 166 or other measuring instruments of appropriate accuracy.

The thickness of the edging tape measure at least 10 mm from the edge, cut at least 5 mm.

When the width of the edging ribbon 15 mm and less thickness measured in the middle of the tape.

5.1, 5.2. (Changed edition, Rev. N 3).

5.3. Deviation from flatness and camber determines on any portion of the tape during unwind of a roll or on a segment with a length of 1−1,5 m from the end of the roll.

5.4. The deviation from flatness is determined in the control flat plate by measuring the maximum height deviation of the tape from the plate.

5.5. To check the tape to check the camber portion of the tape is placed on a flat surface and to the concave side of the strip, apply a line length of 1 m, and then determine the distance of the most remote point of the arc of the tape from the line.

5.6. The quality of the belt surface check visually.

(Changed edition, Rev. N 3).

5.7. For testing tape tensile embrittlement, bend, bend, surface roughness, intergranular corrosion and the hood of the spherical holes is taken one sample from both ends of the rolls.

5.8. Mechanical properties determined on samples cut along the direction of rolling. Testing of all grades of steel in tension is carried out according to GOST 11701 on short samples.

(Changed edition, Rev. N 1).

5.9. The bend test is carried out according to GOST 14019* longitudinal samples.
______________
* On the territory of the Russian Federation GOST 14019−2003. — Note the manufacturer’s database.

5.10. Test tape on the hood of the spherical hole is carried out according to GOST 10510. Depth of the extrusion hole is determined by punch diameter of 20 mm in the samples having a width of from 70 to 90 mm.

5.11. The test bend is carried out according to GOST 13813 on transverse specimens with radius of curvature of the jaws, equal to five times the thickness.

5.12. Surface roughness check the profilers, profiling, optical devices or work samples in accordance with the requirements of GOST 2789.

5.13. A test of the tendency to intergranular corrosion is carried out according to GOST 6032*.
______________
* On the territory of the Russian Federation GOST 6032−2003. — Note the manufacturer’s database.

The test method chosen by the manufacturer.

(Changed edition, Rev. N 3).

5.14. The frequency of testing for embrittlement of steel grade 12H21N5T sets the manufacturer.

5.15. Allowed to apply statistical and non-destructive control methods, approved in the established order.

Allowed determination of the depth of the defects by metallographic method according to normative-technical documentation (NTD).

(Changed edition, Rev. N 3).

6. PACKING, MARKING, TRANSPORTATION AND STORAGE

6.1. Packing, marking, transportation and storage — by GOST 7566 with the following additions.

6.2. The tape is wound into a roll. The coil can consist of several tapes. Place of reeling shall be clearly marked strips.

6.3. The outer diameter rolls of tape with the thickness more than 0.3 mm should be no more than 1200 mm, inner diameter — not less than 180 mm.

6.4. Rolls of ribbons with thickness of 0.3 mm or less, Packed in wooden boxes according to GOST 2991типа I or II or other boxes, ensuring the safety of the tape. At the customer’s request coils wrapped with waterproof paper according to GOST 9569* 10396 GOST, GOST 8828 or another NTD.
______________
* On the territory of the Russian Federation GOST 9569−2006, here and hereafter. — Note the manufacturer’s database.

6.4.1. Rolls of tape with a thickness of 0.3 mm is wrapped St.: one or more layers of paper the churchyard 9569, 10396 GOST, GOST 8828 or another NTD; the film according to GOST 10354, GOST 16272 or another NTD; container holstoproshivny cloth GOST of 14,253, non-woven cloth, stitched the flap of waste textile industry or other types of packaging materials for NTD, except for cotton and linen fabrics. At the request of the consumer between the turns of the coil are laid paper.

In coordination with the consumer the rolls of tape with a thickness of 0.3 mm St. pack in wooden cases of types I or II according to GOST 2991 or other boxes, ensuring the safety of the tape.

6.4.2. Consolidation packages — according to GOST 24597.

6.5. Transport package markings — according to GOST 14192.

6.1−6.5. (Changed edition, Rev. N 2).

6.6. Allowed the transport rolls on pallets at the NTD, the coils should be wrapped crepe paper according to GOST 10396 or film according to GOST 10354или another NTD, and attached to the pallet with soft metal tape according to GOST 3560, GOST 6009 or another NTD or wire according to GOST 3282, or another NTD, in at least three places. Dimensions of the cargo space should not exceed 1200х1200х1200 mm.

(Changed edition, Rev. N 2, 3).

6.7. Weight of cargo space with mechanized loading and unloading in open vehicles shall not exceed 5 tonnes in indoor — 1250 kg. the Mount shall be carried out according to GOST 21650. When manually loading and unloading weight of cargo must not exceed 80 kg.

6.8. The tape is transported by all kinds of transport in accordance with cargo carriage regulations applicable to transport of this type, and conditions of loading and fastening of cargoes, approved by the Ministry of Railways.

6.9. Tape should be stored in a dry place at a temperature of from 15 °to 35 ° C in the absence of air in alkaline, acidic and other aggressive contaminants.

6.7−6.9. (Changed edition, Rev. N 2).

APP. (Deleted, Rev. N 3).

The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
High quality steel: Sat. Standards. -

M.: IPK Publishing house of standards, 2002