GOST 633-80

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  ГОСТ 633-80

GOST 633−80 tubing Pipes and couplings for them. Specifications (with Amendments No. 1, 2, 3)

GOST 633−80

Group В62

INTERSTATE STANDARD

PIPE TUBING AND COUPLINGS

Specifications

Tubing pipes and couplings for them. Specifications

ISS 23.040.10
OKP 13 2700

Date of introduction 1983−01−01
in terms of tube performance As 1984−01−01

INFORMATION DATA

1. DEVELOPED by the Ministry of ferrous metallurgy of USSR, Ministry oil industry

2. INTRODUCED by the Ministry of ferrous metallurgy of the USSR

3. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 11.04.80 N 1658

4. REPLACE GOST 633−63

5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	The item number, app
GOST 2789−73	2.17
GOST 7565−81	4.17
GOST 8695−75	4.19
GOST 10006−80	4.18
GOST 10692−80	5.1
GOST 16338−85	5.1.5
GOST 17410−78	Appendix 3

6. Resolution of the state standard from 09.09.92 G. N 1148 removed the limitation of the validity period

7. EDITION (April 2010) with Changes No. 1, 2, 3, approved in September 1983, January 1986, December 1987 (IUS 11−83, 5−86, 3−88)


This standard applies to seamless steel tubing smooth and couplings, external upset tubing couplings, smooth vysokoaromatichnyj and couplings, as well as clutchless pipes with external upset tubing used for the exploitation of oil and gas wells.

(Changed edition, Rev. N 3).

1. ASSORTMENT

1.1. The standard provides for the production of pipes for precision and quality in two versions: A and B.

Assortment of pipes are given in table.1.

Table 1

Assortment of pipes

Nominal diameter of pipe, mm	Wall thickness, mm	The type of pipe
		smooth	external upset tubing —	smooth vysokoaromatichnyj — NKM	clutchless external upset tubing — NKB
27	3,0	-	OKAY	-	-
33	3,5	OKAY	OKAY	-	-
42	3,5	OKAY	OKAY	-	-
48	4,0	OKAY	OKAY	-	-
60	5,0	OKAY	DTLR	DTLR	DTLR
73	5,5	DTLR	DTLR	DTLR	DTLR
	7,0	DTLR	DTLR	DTLR	DTLR
89	6,5	DTLR	DTLR	DTLR	DTLR
	8,0	-	DTLR	DTLR	DTLR
102	6,5	DTLR	DTLR	DTLR	DTLR
114	7,0	DTLR	DTLR	DTLR	DTLR

1.2. The size and weight of the pipes and joints should match those in hell.1 and in table.2 for smooth pipes and couplings to them, damn.2 and in table.3 for pipes with external upset tubing and couplings to it and shit.3 and in table.4 vysokoaromatichnyj for smooth pipes and couplings to them — NKM. The size and mass of clutchless pipes with external upset tubing — NKB should match those in hell.4 and in table.5.

Damn.1

Table 2

Smooth pipe with couplings

Dimensions, mm

Conditional the diameter of the pipe	Pipe				Clutch
	The outer diameter	Wall thickness	Inner diameter	Weight 1 m, kg	The outer diameter	Length	Weight, kg
33	33,4	3,5	26,4	2,6	42,2	84	0,4
42	42,2	3,5	35,2	3,3	52,2	90	0,6
48	48,3	4,0	40,3	4,4	55,9	96	0,5
60	60,3	5,0	50,3	6,8	73,0	110	1,3
73	73,0	5,5	62,0	9,2	88,9	132	2,4
		7,0	59,0	11,4
89	88,9	6,5	75,9	13,2	108,0	146	3,6
102	101,6	6,5	83,6	15,2	120,6	150	4,5
114	114,3	7,0	100,3	18,5	132,1	156	5,1

Note. At customer’s request, tubes B must be manufactured to a strength group E, inclusive with heat-treated ends (TUK) at a distance greater than the thread length is not less than 50 mm.

Damn.2

Table 3

Pipe with external upset tubing couplings —

Dimensions, mm

Nominal diameter of the pipe	Pipe							Clutch
	Outside- NY diameter	Tol- ness of the wall	Internal Rennie diameter	The outer diameter of the planted portion (PREV. off. +1,5)	Length Vosa- Toms part	Weight 1 m smooth pipe, kg	The increase in weight of the tube due to the upsetting of both ends, kg	Naru- zhny diameter	Length	Weight, kg
27	26,7	3,0	20,7	33,4	40	1,8	0,1	42,2	84	0,4
33	33,4	3,5	26,4	37,3	45	2,6	0,1	48,3	90	0,5
42	42,2	3,5	35,2	46,0	51	3,3	0,2	55,9	96	0,7
48	48,3	4,0	40,3	53,2	57	4,4	0,4	63,5	100	0,8
60	60,3	5,0	50,3	65,9	89	6,8	0,7	77,8	126	1,5
73	73,0	5,5	62,0	78,6	95	9,2	0,9	93,2	134	2,8
		7,0	59,0			11,4
Eighty nine	88,9	6,5	75,9	95,2	102	13,2	1,3	114,3	146	4,2
		8,0	72,9			16,0
102	101,6	6,5	88,6	108,0	102	15,2	1,4	127,0	154	5,0
114	114,3	7,0	100,3	120,6	108	18,5	1,6	141,3	160	6,3

Note. In the inner cavity of the pipe at a distance (+25) mm from the end of permitted technological taper not more than 1:50.

Damn.3

Table 4

Vysokoaromatichnyj smooth pipe with couplings — NKM

Dimensions, mm

Conditional the diameter of the pipe	Pipe				Clutch
	The outer diameter	Wall thickness	Inner diameter	Weight 1 m, kg	The outer diameter	Length	Weight, kg
60	60,3	5,0	50,3	6,8	73,0	135	1,8
73	73,0	5,5	62,0	9,2	88,9	135	2,5
		7,0	59,0	11,4
89	88,9	6,5	75,9	13,2	108,0	155	4,1
		8,0	72,9	16,0
102	101,6	6,5	88,6	15,2	120,6	155	5,1
114	114,3	7,0	100,3	18,5	132,1	205	7,4

Damn.4

Table 5

Tube clutchless external upset tubing — NKB

Dimensions, mm

Conditi- tion pipe diameter	Outside- tion diameter	Wall thickness	Internal Rennie diameter	Naugy the diameter of the planted portion (PREV. off. ±0,5)	Inner diameter in the plane of the end face of the nipple end	Inner diameter at the end of the Vosa- Toms part	Length Vosa- Toms part	Weight 1 m smooth pipe, kg	The increase in weight of the tube due to the upsetting of both ends, kg
60	60,3	5,0	50,3	71	53,5	48,3	95	6,8	1,8
73	73,0	5,5	62,0	84	65,5	60,0	100	9,2	2,2
		7,0	59,0	86	63,0	57,0		11,4	2,6
89	88,9	6,5	75,9	102	79,5	73,9	100	13,2	3,2
		8,0	72,9	104	77,0	70,9		16,0	3.7 V
102	101,6	6,5	88,6	116	92,0	86,6	100	15,2	4,0
114	114,3	7,0	100,3	130	104,0	98,3	100	18,5	4,8

Note to table.2−5. When calculating the mass density of steel is equal to 7.85 g/cm.


(Changed edition, Rev. N 2).

1.3. Pipe of all types of execution And shall be manufactured with a length of 10 m. maximum deviations of ±5%.

Pipe of all types of execution Used must be made of two groups of lengths:

1st group — from 5.5 to 8.5 m;

2-I «St of 8.5» and 10.0 m.

At the request of the consumer allowed the manufacture of pipes of A range of groups of lengths of the execution of B.

The length of the pipe determines the distance between its ends and screwed joints — the distance from the free end of the coupler to the end of a taper thread the opposite end of the pipe.

(Changed edition, Rev. N 2).

1.4. Maximum deviations in sizes and weight of the pipes and couplings establish the following:

a) the outside diameter of pipes:

	The Execution And
— conditional diameter up to	102 mm	±0,8 mm
«"	114 mm	±0.9 mm
	Performance B
— conditional diameter	from 27 to 48 mm		mm
„"	„60“ 89 mm		mm
— nominal diameter	102 and 114 mm		mm

Increase the maximum allowed positive deviation of the outer diameter of the pipe to 1 mm over the upset end of the length of not more than:

100 mm — for pipes with couplings.

150 mm „" NKB.

The ends of tubes (smooth and NKM) should be performed to provide the minimum length of thread with a full profile without czernowin specified in paragraph 2.18, and the minimum wall thickness in the plane of the end of the pipe, specified in the notes to the table.10 and 14;

	b) wall thickness	-12.5 percent
	Positive deviations are limited by pipe weight;
	C) the outside diameter of the couplings	±1,0%;
	g) the length of the coupling	±2 mm;

d) weight:

	— for single pipe		%	(version A)
	for trumpets (weighing not less than 60 tons)		-1,75%	(version A)
	— for single pipe		%	(version B)

Note. Pipe performance And weighing less than 60 tonnes, the maximum deviations for the party of pipes reglamentary.


(Changed edition, Rev. N 3).

1.5. At the end portions equal to one third the length of the pipe, shall not be curved more than 1 mm per 1 m length.

Not permitted General curved pipe exceeding the maximum allowable under the control in accordance with clause 4.4.

1.6. The symbol of the pipes should include: pipe type (except for smooth pipes), nominal diameter of pipe, wall thickness, group strength and designation of the present standard.

The symbol of the couplings must include: the type of pipe (in addition to clutches to smooth pipes), nominal diameter, group strength and designation of the present standard.

Examples of symbols

Pipes of steel of strength group E, with nominal diameter of 60 mm with a wall thickness of 5 mm and couplings for them:

60х5-E GOST 633−80 for smooth tubes;

60 GOST 633−80 for couplings for these pipes;

In-60х5-E GOST 633−80 — for pipes with external upset tubing;

V-60 GOST 633−80 for couplings for these pipes;

NKM-60х5-E GOST 633−80 — vysokoaromatichnyj for smooth pipes;

NKM-60 GOST 633−80 for couplings for these pipes;

60х5-TUK-E GOST 633−80 for smooth tubes with heat-treated ends.

Tube clutchless external upset tubing of steel of strength group E, with nominal diameter of 60 mm, with wall thickness 5 mm:

NKB-60х5-E GOST 633−80

Note. For pipes and couplings of execution And after the designation of the standard, the letter A.

2. TECHNICAL REQUIREMENTS

2.1. Pipe and couplings shall be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

2.2. On the outer and inner surfaces of pipes and couplings should not be captured, shells, sunsets, bundles, cracks and pesochin.

Allowed cutting and Stripping these defects provided that their depth does not exceed limit minus deviation of the wall thickness. Welding, zachekanka or the incorporation of defects is not allowed.

In places where wall thickness can be measured directly, the depth of the defective places may exceed the specified amount while maintaining minimum wall thickness, defined as the difference between the nominal thickness of the pipe and limit it to negative deviation.

Allowed some minor nicks, dents, risks, thin layer of dross and other defects due to the method of production, if they do not take wall thickness outside negative deviations.

2.3. The place of transition of the planted part of the pipe to the part wall thickness should not have sharp ledges.

On the inner surface planted to the outside of the pipe ends with couplings should not be more than three defects (failure to complete metal repair and defects), the length of each of which the circumference should not be more than 25 mm, a width of over 15 mm and a depth of more than 2 mm.

On the outer and inner surfaces planted out all clutchless pipes at a distance of less than 85 mm from the end of the defects referred to in paragraph 2.2, are not permitted. In the distance St. 85 mm should not be more than three defects (not fillings metal and repair of defects), the length of each of which shall not be more than the circumference of a circle, of a width more than 15 mm and a depth of more than 2 mm.

Wall thickness in the transition of all pipes with external upset tubing shall not be less than the minimum allowable wall thickness of the smooth pipe section.

2.4. Mass fraction of sulfur and phosphorus in steel should not be more than 0,045% each.

2.5. Pipe and couplings shall be made of steel of the same strength group of the table.6.

Table 6

Name of the indicator	Norm mechanical properties for steel strength group
	D
	Performance		To	E	L	M	R
	And	B
Tensile strength , not less than, MPa (kgf/mm)	655 (66,8)	638 (65,0)	687 (70,0)	689 (70,3)	758 (77,3)	823 (83,9)	1000 (101,9)
Yield :
not less than, MPa (kgf/mm)	379 (38,7)	373 (38,0)	491 (50,0)	552 (56,2)	654 (66,8)	724 (73,8)	930 (94,9)
— no more than, MPa (kgf/mm)	552 (56,2)	- -	- -	758 (77,3)	862 (of 87.9)	921 (93,9)	1137 (116,0)
Elongation , %, not less	14,3	16,0	12,0	13,0	12,3	11,3	9,5

Note. For pipes made of steel strength group D, B the maximum value of yield strength is not limited.

2.6. Smooth pipe with couplings and pipe smooth vysokoaromatichnyj couplings strength group K and above, the pipe with external upset tubing couplings and pipe clutchless external upset tubing all grades must be subjected to thermal or thermomechanical processing. Allowed in the manufacture of smooth and smooth vysokoaromatichnyj pipes of strength group To B to produce thermal processing by heating and rolling.

(Changed edition, Rev. N 2).

2.7. Pipe shall withstand flattening tests;. The distance between the parallel planes after the test should not be more than specified in table.7.

Table 7

Group strength	The ratio of the diameter to the thickness wall	The distance between parallel surfaces, mm
D	16 and more	0,65
K, E		0,70
L		0,75
D	Less than 16	(Of 0.98 to 0.02)
K, E		(1,28−0,03)
L		(1,23−0,03)

Note. The distance between parallel planes for pipes of grades M and R is determined by agreement between manufacturer and consumer.

2.8. Thread and sealing cone bore couplings shall be galvanized or phosphated.

2.9. Each pipe is smooth, smooth vysokoaromatichnyj and outward upset ends shall be fitted with a coupling mounted on buttonovercolor the machine at one end. At the customer’s request delivery couplings without pipe.

(Changed edition, Rev. N 2).

2.10. When screwing pipes with couplings shall apply grease or other seals to ensure connection integrity and protects it from chipping and corrosion.

2.11. With the purpose of protection from corrosion during transportation the outer surface of each pipe and coupler should be painted.

At the request of the consumer allowed the manufacture of pipes and couplings without color or coated with neutral grease.

At the request of the consumer pipe performance And must be manufactured with a protective coating of the inner surface, preventing deposition of paraffin and corrosion. The coating performed in accordance with technical documentation approved in the established order.

(Changed edition, Rev. N 2).

2.12. Pipes with screwed sockets as well as tubes clutchless external upset tubing shall withstand an internal hydraulic test pressure value stated in the table.8.

Table 8

The values of the test hydraulic pressure pipes

Nominal diameter of pipe, mm	Thickness wall, mm	Pressure for tubes of steel grades, MPa (kgf/cm)
		D
		Performance		To	E	L	M	R
		And	B
27	3,0	67,2 (685)	66,2 (675)	87,3 (890)	98,1 (1000)	- -	- -	- -
33	3,5	64,3 (655)	63,3 (645)	83,4 (850)	93,7 (955)	- -	- -	- -
42	3,5	50,5 (515)	49,5 (505)	65,2 (665)	73,6 (750)	- -	- -	- -
48	4,0	50,5 (515)	49,5 (505)	65,2 (665)	73,6 (750)	- -	- -	- -
60	5,0	50,5 (515)	49,5 (505)	65,2 (665)	73,6 (750)	87,3 (890)	96,6 (985)	122,6 (1250)
73	5,5	45,6 (465)	45,1 (460)	59,4 (605)	66,7 (680)	79,0 (805)	87,3 (890)	112,3 (1145)
	7,0	57,9 (590)	57,4 (585)	75,0 (765)	84,9 (865)	100,6 (1025)	110,9 (1130)	In 112.6 (1250)
89	6,5	44.1 kHz (450)	43,7 (445)	57,4 (585)	64,7 (660)	76,5 (780)	For 84.4 (860)	108,9 (1110)
	8,0	54,4 (555)	53,5 (545)	70,6 (720)	79,5 (810)	94,2 (960)	104,0 (1060)	122,6 (1250)
102	6,5	38,7 (395)	38,3 (390)	50,0 (510)	56,4 (575)	66,7 (680)	73,6 (750)	95,2 (970)
114	7,0	37,3 (380)	36,8 (375)	48,1 (490)	54,4 (555)	64,3 (655)	71,1 (725)	91,2 (930)

Notes:

1. If the calculated pressure () exceeds of 68.6 MPa (700 kgf/cm), the test pressure is taken to equal and 68.6 MPa (700 kgf/cm). At the request of the consumer test pressure taken as equal to design pressure, but not more than RUB 122.6 MPa (1250 kgf/cm).

2. By agreement with the consumer for the plain tubing and external upset tubing and couplings to them B groups strength d, and the test pressure is limited to the value of 19.7 MPa (200 kgf/cm) and for grades E and above — 29,4 MPa (300 kgf/cm).


The magnitude of the hydraulic pressure () is calculated by the formula

kgf/cm;

, MPa,

where is the nominal wall thickness, mm;

 — nominal outside diameter of pipe, mm;

 — allowable stress, kgf/mm(MPa) taken equal to 0.8.

(Changed edition, Rev. N 2).

2.13. Basic parameters and dimensions of threaded connections of the plain tubing and external upset tubing and couplings to them

2.13.1. The shape and dimensions of the thread profile of the pipe and couplings shall be as specified in the hell.5 and in table.9.

________________
* Dimensions for reference.

1 — a line parallel to the axis of the thread; 2 — line mean diameter of the thread; 3 — axis thread

Damn.5

Table 9

Dimensions, mm

Setting thread	The norm
	The number of threads on the length of 25.4 mm
	10	8
Thread pitch	2,540	3,175
Height of the original profile *	2,200	2,750
Profile height	1,412	1,810
The working height of the profile *	1,336	1,734
The profile angle *	60°
The angle of the side profile /2	(30±1)°
The radius of curvature:
— profile peaks	0,432	0,508
— depression profile	0,356	0,432
Clearance *	0,076
The angle of incline	1°47'24“
Taper	1:16

________________

* Dimensions for reference.

Notes:

1. Thread pitch measured parallel to the thread axis pipe and couplings.

2. Maximum deviations of the values of the radii and the design of the threading tool and the control not subjected to.

2.13.2. Dimensions of threaded connections of smooth pipes and joints should match those in hell.6 and in table.10, and pipes with external upset tubing and couplings for them — to hell.6 and in table.11.

Note. The size given for pipes with external upset tubing.

________________
* Dimensions for reference.

1 — the end of the taper of the thread; 2 — thread with cut vertices; 3 — the main plane; 4 — the average diameter of the thread

Damn.6

Table 10

Threaded connection of smooth pipes and couplings to them

mm

Conditi- tion of dia- meter true — would	Outside- tion of dia- meter true would	Step the pain would	The average dia- meter thread in the main Noah. - bones *	The diameter of the thread in the plane the end of the tube		Thread length pipe				Internal Rennie thread diameter in. - the bones of the coupling face *	The diameter of the cylindrical- hrecheskoy undercut coupling (pred. off. +0,8)	The depth of the undercut coupling (pred. off. )	Width torso- howling. - bone clutch	Distance from coupling face to the end of a taper thread on the pipe when screwing manually (interference)
				common (end of taper)		to the main plane (full profile)*	sbeg
				outside- NY *	internal Rennie *	But — min.	Pred. off.
33	33,4	2,540	32,065	32,382	29,568	29	±2,5	16,3	8	31,210	35,0	8,0	2,0	5,0
42	42,2		40,828	40,948	38,124	32		19,3		39,973	43,8		2,5
48	48,3		46,924	46,866	44,042	35		22,3		46,069	49,9		1,5
60	60,3		58,989	58,494	55,670	42		29,3		58,134	61,9		4,0
73	73,0		71,689	70,506	67,682	53		40,3		70,834	74,6		5,5
89	88,9		87,564	85,944	83,120	60		47,3		86,709	90,5		6,5
102	101,6	3,175	99,866	98,519	94,899	62	±3,2	49,3	10	98,519	103,2	9,5	6,5	6,5
114	114,3		112,566	111,031	107,411	65		52,3		111,219	115,9		6,0

________________

* Dimensions for reference.

Notes:

1. End of thread end consider the intersection point of the generatrix of the cone of thread end with a generatrix of the cylinder of diameter equal to the outer diameter of the pipe.

2. Allowed conical recess at a coupling face formed parallel to the generatrix of the cone of thread. The smallest diameter of the conical recess should be equal to the cylindrical recess.

3. Minimum wall thickness under the threads in the plane of the end pipe () is calculated according to the following formula (rounded to the nearest 0.1 mm),

where - the nominal wall thickness, mm;

 — nominal outside diameter of pipe, mm;

internal thread diameter in the plane of the end of pipe, mm;

 — the value of the upper limit deviation of outside diameter of pipe, mm specified in claim 1.4.

If the value calculated by above formula is less than 1.0 mm for pipes with a nominal diameter up to 48 mm incl. and less than 2.0 mm for all other diameters, the value should be taken equal to 1.0 mm.

(Changed edition, Rev. N 2).

Table 11

Threaded connections of pipes with external upset tubing and couplings to them

mm

Conditi- tion of dia- meter of pipe	Outside- tion diameter Vosa- Toms part (pred. off. +1,6)	Step pain- would	Media niy dia the meter in the main thread. - bones *	The thread diameter in the plane of the end pipe		Thread length pipe				Internal Rennie thread diameter in. - the bones of the coupling face *	The diameter of the cylindrical- hrecheskoy groove coupler (pre. off. +0,8)	Depth Bina vitoc- Ki muf- you (PREV. off. )	Shiri- torso- howling. - bone clutch	Distance from coupling face to the end of a taper thread on the pipe when svenciu- NII manually (interference)
				total (end of taper)
				outside- NY *	internal Rennie *	But — min.	Pred. off.	to main. - bone (complete Pro- LEM) *	sbeg
27	33,4	2,540	32,065	32,383	29,568	29	±2,5	16,3	8	31,210	35,0	8,0	2,0	5,0
33	37,3		35,970	36,100	33,276	32		19,3		35,115	38,9		3,0
42	46,0		44,701	44,643	41,819	35		22,3		43,846	47,6		2,5
48	53,2		51,845	51,662	48,833	37		24,3		50,990	54,8		2,5
60	65,9	3,175	64,148	63,551	59,931	50	±3,2	37,3	10	62,801	67,5	9,5	3,5	6,5
73	78,6		76,848	76,001	72,381	54		41,3		75,501	80,2		4,5
89	95,2		93,516	92,294	88,674	60		47,3		92,169	96,9		6,5
102	108,0		106,216	104,744	101,124	64		51,3		104,869	109,6		6,5
114	120,6		118,916	117,256	113,636	67		54,3		117,569	122,3		7,5

________________
* Dimensions for reference.

Notes:

1. End of thread end consider the intersection point of the generatrix of the cone of thread end with a generatrix of the cylinder of diameter equal to the outside diameter of the planted portion.

2. Allowed conical recess at a coupling face formed parallel to the generatrix of the cone of thread. The smallest diameter of the conical recess should be equal to the cylindrical recess.

2.13.3. Maximum deviations from the nominal thread sizes shall be as specified in table.12.

Table 12

mm
Limit deviation
the thread pitch		taper thread
by length 25.4 mm	for the full length of thread with a full profile	pipe	clutch
±0,075	±0,120	+0,36	+0,22
		-0,22	-0,36

Notes:

1. Maximum deviations of pitch length not exceeding 25.4 mm, allowed for the distance between any two threads with a full profile. For the distance between threads over 25.4 mm allowed an increase of the marginal variances in proportion to the distance, but not more than specified in the table for the entire length of thread with a full profile.

2. Limit deviation of taper (variances of the difference between the two diameters) made on the screw length of 100 mm and refer to the average diameter of the pipe thread and coupling, as well as to the outside diameter of the pipe thread and the internal thread diameter of the coupling.

2.13.4. Preload galvanized or phosphated thread for threaded coupling size-tube should be equal to the preload (see the devil.7 and table.10 and 11) adopted for screwing couplings with pipes manually. Limit deviation… ±.

Note. The value corresponds to the thread pitch, and is taken equal to 2.5 mm (for pipes and couplings with thread pitch 2,540 mm) and 3.2 mm (for pipes and couplings with thread pitch 3,175 mm).

1 and measuring plane of the thread gauge-rings; 2 — threaded caliber-ring; 3 — pipe; 4 — screw-gauge-tube; 5 — coupling; 6 — measuring a plane of threaded plug gages

Damn.7

2.13.5. The interference fit pipe thread for threaded caliber-ring must be of equal value . Limit deviation …±.

2.13.6. When manually screwing and galvanized or phosphated couplings with pipe tightness must be equal to the value (see damn.6 and table 10 and 11). Limit deviation …±. Allowed selection of couplings and pipe ends for tightness.

2.13.7. After screwing the pipes and couplings on the machine side of the coupler must match the end of a taper thread on the pipe (see the devil.6). Limit deviation… ±.

2.13.8. To exit threading tool in the middle of the clutch can be machined a groove to a depth not exceeding the height by more than 0.5 mm. the Groove should not have sharp corners (undercuts). In the absence of grooves allowed overcutting counter-thread at the distance not exceeding (13-) mm, measured from the middle of the clutch in both directions.

2.14. Basic parameters and connection sizes smooth vysokoaromatichnyj pipes and couplings to them — NKM

2.14.1. Shape and dimensions of the thread profile pipes with a nominal diameter of 60 to 102 mm and couplings shall be as specified in the hell.8 and in table.13, and for pipes with a nominal diameter of 114 mm and couplings to them — damn.9 and in table.13.

________________
* Dimensions for reference.

1 — axle pipe thread IMC and the nipple end of the pipe NKB; 2 — a line parallel to the axis of the pipe thread IMC and the nipple end of the pipe NKB; 3 — axis coupler thread NKM and the belled pipe end NKB; 4 — line parallel to the axis of the thread coupling of NKM and the belled pipe end NKB

Damn.8

(Changed edition, Rev. N 3).

Table 13

Dimensions, mm

Setting thread	The norm
	NKM pipe with nominal diameter from 60 to 102 mm and couplings to them and NKB pipes of all diameters	NKM pipe with nominal diameter of 114 mm and couplings to them
Thread pitch	4,233	5,080
Profile height :
— external thread	1,20	1,60±0,03
— internal thread	1,30	1,60±0,03
The profile angle *	33°	13°
The angle of the side profile:
	(3±1)°	(3±1)°
	(30±1)°	(10±1)°
The radius profile:
	-	0,20
	0,20	0,20
	0,25	-
	-	0,80
	-	0,80
The width of the chamfer	0,30	-
The width of the top profile:
*	1,659	2,29
*	1,600	2,29
The width of the troughs of the profile:
	1,800	2,43
	1,794	2,43
The angle of inclination	2°23'09“	1°47'24»
Taper	1:12	1:16

________________

* Dimensions for reference.

Notes:

1. Thread pitch measured parallel to the thread axis pipe and couplings.

2. All maximum deviations for the elements of the thread profile with the exception of the extreme deviations in the angles of the sides and height of this profile to design a threading tool and control not subjected to.

3. Profile height external thread pipe NKB is provided at the expense of the relevant provision of smooth and threaded calibers-rings and the control not subjected to.

4. Permitted the replacement of chamfer radius of fillet mm (in addition to the outer threads of pipes NKB).

________________
* Dimensions for reference.

1 — the axle thread of the coupling; 2 — a line parallel to the axis of the thread coupling; 3 — axis pipe thread; 4 — line parallel to the axis of the pipe thread

Damn.9

2.14.2. Joint dimensions should match those in hell.10 and in table.14 (for tube) and shit.10 and in table.15 (for couplings).

(Changed edition, Rev. N 2, 3).

________________
* Dimensions for reference.

1 — the end of the taper of the thread; 2 — thread with cut vertices; 3 — the main plane; 4 — length of thread with a full profile; 5 — thread end; 6 — design the plane

Damn.10

Note. May be replaced with the chamfer (35±5)° at the coupling face with a radius of curvature no greater than the width of the chamfer.