GOST 631-75

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  ГОСТ 631-75

GOST 631−75 of drill Pipe with upset ends and couplings. Specifications (with Change No. 1)

GOST 631−75

Group В62

INTERSTATE STANDARD

OF DRILL PIPE WITH UPSET ENDS AND COUPLINGS

Specifications

Internal-external upset drill pipes and couplings for them. Specifications

ISS 23.040.10
OKP 13 2400

Date of introduction 1977−01−01

The decision of the State standards Committee of the Council of Ministers of the USSR from 04.12.75 N 3786 date of introduction is established 01.01.77

The expiration time limit is removed by the Resolution of Gosstandart from 09.09.92 N 1147

REPLACE GOST 631−63

EDITION (April 2010) with amendment No. 1, approved in December 1985 (IUS 4−86)

This standard applies to seamless steel pipes with upset ends and couplings, as well as tubes with upset ends and conical stabilizing belts used for drilling.

1. ASSORTMENT

1.1. Drill pipes must be manufactured:

type 1 — with upset ends and couplings thereto;

type 2 — external upset tubing and coupling thereto;

type 3 — with upset ends and conical stabilizing belts;

type 4 — external upset tubing and conical stabilizing belts.

1.2. The size and weight of the pipe type 1 and couplings shall be as specified in the hell.1 and in table.1, 2 — on hell.2 and in table.2, 3 — on features.3 and in table.3, type a 4 on features.4 and in table.4.

Damn.1 Sizes and weight of the pipe type 1 and couplings to them

Damn.1

Table 1

Pipes with upset ends and couplings

Dimensions, mm

Nominal diameter of the pipe	Pipe							Clutch					Weight, kg
Outside- NY diameter	Wall thickness	Internal Rennie diameter	Landing				Outside- tion diameter	Length	Boring		The width of the face. - bones	1 m smooth pipe	two landings (one tube)	clutch
Length to re- transition part not less than	Length re- transition part	The diameter of the passage		Diameter	Depth
60	60,3	7	46,3	90	40	32	40	80	140	63,5	3	5	9,15	1,2	~2,7
9	42,3	24	32	11,3	1,4
73	73,0	7	59,0	100	40	45	54	95	166	76,2	3	6	11,4	1,6	~4,2
9	55,0	34	43	14,2	2,4
11	51,0	28	37	16,8	2,2
89	89,0	7	75,0	100	40	60	69	108	166	92	3	6	14,2	2,4	~4,4
Nine	71.0 per	49	58	17,8	3,4
11	67,0	45	54	21,2	3,2
102	101,6	7	87,6	115	55	74	83	127	184	104,8	3	7	16,4	3,0	~7,0
8	85,6	70	79	18,5	3,4
9	83,6	66	75	20,4	3,8
10	81,6	62	71	22,4	4,0
114	114,3	7	100,3	130	55	82	91	140	204	117,5	3	7	18,5	4,6	~9,0
8	98,3	78	87	20,9	5,8
9	96,3	74	83	23,3	6,0
Ten	94,3	70	79	25,7	6,6
11	92,3	68	77	28,0	6,4
127	127,0	7	113,0	130	55	95	104	152	204	130,2	3	7	20,7	5,8	~10,0
8	111,0	91	100	23,5	6,4
9	109,0	87	96	26,2	7,0
10	107,0	83	92	28,9	7,6
140	Of 139.7	8	123,7	130	55	105	114	171	215	144,5	3	8	26,0	7,0	~14,0
9	121,7	101	110	29,0	7,6
10	To 119.7	100	106	32,0	8,2
Eleven	117,7	91	100	35,0	9,6
168	168,3	9	150,3	130	55	128	137	197	229	171,5	3	8	35,3	9,8	~16,7
10	And 148.3	124	133	39,0	10,8

Notes:

1. When calculating the mass density of steel is equal to 7.85 g/cm.

2. Size (length transition) is a reference.

3. Size can be equal .

4. By agreement with the consumer it is allowed manufacture of pipes with smaller wall thickness.

5. The outer diameter of the pipe end with a nominal diameter of 140 mm and a length of less than shall not be less than 141,3 mm.

Damn.2. The dimensions and weight of pipes, type 2 and couplings to them

Damn.2

Table 2

Pipe with external upset tubing couplings

Dimensions, mm

Nominal diameter of the pipe	Pipe						Clutch					Weight, kg
Outside- NY diameter	Tol- ness of the wall	Internal tions diameter	Landing			Outside- tion diameter	Length	Boring		The width of the face. - bones	1 m smooth pipe	two landings (one tube)	clutch
Outside- tion diameter	Length to re- transition part not less than	The length of the transition Noah part	Diameter	Depth
60	60,3	7	46,3	67,46	110	65	86	140	70,6	3	5	9,15	1,5	~2,7
9	42,3	11,3
73	73,0	7	59,0	81,76	120	65	105	165	84,9	3	6	11,4	2,5	~4,7
9	55,0	14,2
11	51,0	16,8
89	89,0	7	75,0	97,13	120	65	118	One hundred sixty five	100,3	3	7	14,2	3,5	~5,2
9	71.0 per	17,8
11	67,0	21,2
102	101,6	8	85,6	114,30	145	65	140	204	117,5	3	7	18,5	4,5	~9,0
9	83,6	20,4
10	81,6	22,4
114	114,3	8	98,3	Of 127.00	145	65	152	204	130,2	3	7	20,9	5,0	~11,0
9	96,3	23,3
10	94,3	25,7
11	92,3	28,0
140	Of 139.7	8	123,7	154,00	145	65	185	215	Of 157.2	3	8	26,0	7,0	~15,0
9	121,7	29,0
10	To 119.7	32,0
11	117,7	35,0

Notes:

1. When calculating the mass density of steel is equal to 7.85 g/cm.

2. In the inner cavity of the landing area () is allowed technology taper to 6 mm, the size can be larger than the size of 6 mm.

Damn.3. The size and weight of the pipe 3 and couplings to them

________________
* Size for reference.

Damn.3

Table 3

Pipes with upset ends and conical stabilizing belts

Dimensions, mm

Conditi- tion pipe diameter	Outside- tion pipe diameter	Tol- ness of the wall	Internal Rennie diameter	The diameter of the passage landing	Outside- th diameter of the landing	Length mechanical proper treatment upsetting	Length to re- transitive landing	Weight of 1 m of a smooth pipe, kg	The increase in mass of the tube due to the upsetting of both ends, kg
Eighty nine	89,0	9	71.0 per	57	89,9	150	145	17,8	3,9
11	67,0	54	21,2	3,4
102	101,6	9	83,6	68	101,9	150	145	20,4	5,1
10	81,6	66	22,4	5,0
114	114,3	9	96,3	78	115,2	160	155	23,3	7,3
10	94,3	76	25,7	7,1
11	92,3	74	28,0	6,9
127	127,0	9	109,0	92	130,2	160	155	26,2	7,8
10	107,0	90	28,9	7,6
140	Of 139.7	9	121,7	102	140,2	160	155	29,0	11,0
10	To 119.7	100	32,0	10,2
11	117,7	100	35,0	9,2

Note. The size specified for the machined surface of the upset ends of the pipe length .

Damn.4. The size and weight of the pipe type 1 and couplings to them

Damn.4

Table 4

Pipe with external upset tubing and conical stabilizing belts

Dimensions, mm

Conditi- tion pipe diameter	Outside- tion pipe diameter	Wall thickness	Internal Rennie diameter	The diameter of the passage landing	Outer — diameter landing NY	Length mechanical proper treatment upsetting	Length of landing	Weight of 1 m of a smooth pipe, kg	The increase in mass of the tube due to the upsetting of both ends, kg
73	73,0	9	55,0	52,0	85,9	150	155	14,2	3.7 V
11	51,0	48,0	16,8
89	89,0	9	71.0 per	68,0	101,9	150	155	17,8	4,5
11	67,0	64,0	21,2
102	101,6	9	83,6	80,6	115,2	160	165	20,4	5,7
Ten	81,6	78,6	22,4
114	114,3	9	96,3	93,3	130,2	160	165	23,3	7,9
10	94,3	91,3	25,7
11	92,3	89,3	28,0

Note. The size specified for the machined surface of the upset ends of the pipe length .

1.3. Pipe types 1, 2 shall be manufactured with right-and left-hand thread. Tube types 3, 4 must be manufactured with right-hand thread, and by agreement between manufacturer and consumer with the left hand. The direction of the thread is specified in the order.

1.4. Pipe of all types shall be manufactured in length:

6; 8 and 11.5 m in nominal diameter from 60 up to 102 mm;

The 11.5 — in nominal diameter from 114 to 168 mm.

The party is allowed up to 25% of the pipe length of 8 m and up to 8% with a length of 6 m.

Note. With the consent of the consumer and in accordance with the specialization of tube mills allowed the production of pipes with a diameter of 114 mm with a length of 6 and 8 m.

1.5. Maximum deviations in sizes and weight of the pipes and couplings shall not exceed:

a) the outside diameter of the pipe:

±1% — if regular accuracy of manufacturing of pipes of types 1−4,

±0,75% — in manufacturing high precision tubes of the types 1 and 2.

May increase the outer diameter of the pipes type 2 up to 1 mm in length not over 100 mm per planted out part of the pipe and up to 4 mm in length up to 150 mm pipe, type 4;

b) the outside diameter of the coupling for pipes of types 1 and 2 — ±1%;

C) wall thickness:

— 12,5% — for pipes of ordinary precision types 1−4,

— 10% — for pipes of high accuracy types 1 and 2.

Positive deviation limited by mass of pipes;

d) the bore diameter of the coupling for pipes of types 1 and 2 +1 mm;

d) at least the inner diameter of the planted part of the pipe type 1 & 3 with inner landing — ±1.5 mm;

e) the length of the tubes of the types 1 to 4:

+0.6 m — for pipes with a length of 6 and 8 m,

+0.9 m — for pipes with a length of 11.5 mm;

g) the length of the coupling for pipes of types 1 and 2 — ±3 mm;

s) by weight of one pipe:

+9% — ordinary precision manufacturing types 1−4,

+6,5% — manufacturing high precision types 1 and 2.

1.6. Pipe types 1 and 2 increased accuracy are made by agreement between manufacturer and consumer. Tubes types 3 and 4 produce normal accuracy.

1.7. Ovality and raznoshennoy should take the pipe dimensions limit deviations for outer diameter and wall thickness.

1.8. The pipe curvature of the end portions equal to one third the pipe length must not exceed 1.3 mm by 1 m.

The overall curvature of the pipe, that is, the deflection measured at the middle of the pipe, shall not exceed 1/2000 of the length of the pipe.

1.9. Designation of drill pipes should include: type of landing, precision fabrication for pipe types 1 and 2 increased accuracy of manufacture, the letter K — for tubes types 3 and 4, a conventional pipe diameter, wall thickness, group strength and designation of the present standard.

Examples of symbols

The drill pipe, type 1, regular accuracy of manufacturing, a nominal diameter of 114 mm, wall thickness 9 mm of steel strength group D:

The tube-In-114х9-D GOST 631−75

The same high accuracy:

Pipe VP-114х9-D GOST 631−75

Coupling to the pipe type 1 nominal diameter of 114 mm of steel strength group D:

Clutch In-114-D GOST 631−75

The drill pipe type 2, regular accuracy of manufacturing, a nominal diameter of 114 mm, wall thickness 9 mm of steel strength group D:

Tube N-114х9-D GOST 631−75

The same high accuracy:

Pipe NP-114х9-D GOST 631−75

Coupling to the pipe type 2, nominal diameter of 114 mm of steel strength group D:

Coupler H-114-D GOST 631−75

The drill pipe type 3 nominal diameter of 114 mm, wall thickness 9 mm of steel strength group D:

Pipe VK-114х9-D GOST 631−75

The same type 4:

Pipe NK-114х9-D GOST 631−75

For pipes and couplings left-hand thread in the legend, after the pipe or coupling is the letter L.

2. TECHNICAL REQUIREMENTS

2.1. On the surface of pipes and joints (outer and inner) should not be captured, shells, sunsets, bundles, cracks and pesochin.

Allowed cutting and Stripping these defects only along the pipe axis, provided that the cutting and cleaning do not take the thickness of the wall for limiting the negative deviations. Welding, zachekanka or the incorporation of defects is not allowed.

2.2. The planted surface of the tube and transfer it to the part wall thickness should not have sharp ledges. On the inner surface of the transition part are planted outside ends of drill pipes type 4 all diameters allowed one sloping annular omission of a width not exceeding 40 mm, and the smallest wall thickness in these areas should be 2 mm larger than the nominal wall thickness of this size of pipes.

On the inner surface planted to the outside of the pipe ends type 2 allowed traces of fixes and a separate shallow not fillings metal:

a) for pipes with nominal diameter 60−102 mm to a depth of 2 mm, with a length of 25 mm around the circumference and a width of 15 mm, in an amount of not more than three nezaposleni;

b) for pipes with nominal diameter 114−140 mm — depth of 3 mm, with a length of 50 mm around the circumference and a width of 20 mm, not more than three nezaposleni.

2.3. The contents of sulphur and phosphorus in steel should not be more than 0,045% each.

2.4. Pipe and couplings shall be made of steel grades listed in table.5.

Table 5

Name of the indicator	The norm of the mechanical properties of steel strength group, no less
D	To	E	L	M	R	T
Tensile strength,
MPa	637	687	735	784	882	980	1078
(kgf/mm)	(65)	(70)	(75)	(80)	(90)	(100)	(110)
Yield strength,
MPa	373	490	539	637	735	Eight hundred eighty two	980
(kgf/mm)	(38)	(50)	(55)	(65)	(75)	(90)	(100)
Elongation, %:
	16	12	12	12	12	12	12
	12	10	10	10	10	10	10
The relative contraction %	40	40	40	40	40	40	40
Toughness КСV,
J/m	39,2	39,2	39,2	39,2	39,2	29,4	29,4
(kgf·m/cm)	(4)	(4)	(4)	(4)	(4)	(3)	(3)

Notes:

1. Pipe grades R and T are made by agreement between manufacturer and consumer.

2. When translating heats of the group’s strength in D in the label and accompanying document must be provided to both groups.


(Changed edition, Rev. N 1).

2.5. Couplings for tubing, types 1 and 2 with a nominal diameter of 114 mm and less shall be made of steel follow-up group strength with higher mechanical properties in comparison with specified in the table.5. By agreement with the consumer allowed to manufacture pipes and couplings made of steel of the same strength group.

Pipe nominal diameter over 114 mm with couplings shall be made of steel of the same strength group.

2.6. Pipe strength groups D, K, E, L must be able to withstand the test of flattening.

The distance between the parallel planes, after testing, must be no more than the specified in table.6.

Table 6

Group strength	The ratio of the diameter to the wall thickness of the pipe ()	The distance between the planes
D, K, E,	13 and more	0,7
L	0,8
D, K, E,	Less than 13	(Of 0.965−0,02 )
L	(1,065 to 0.02)

2.7. Pipe and couplings shall be thermally processed.

2.8. Thread couplings to pipes types 1 and 2 shall be galvanized or phosphated.

2.9. The length of the pipe is determined by the distance between its ends and screwed joints — the distance from the free end of the coupler to the last risks thread the opposite end of the pipe.

Pipe types 1 and 2 with a length of 6, 8 and 11.5 m are supplied without couplings.

2.10. According to customer requirements pipe types 1 and 2 with a length of 6 and 8 m are supplied with couplings, screwed manually.

2.11. According to customer coupling for pipes of types 1 and 2 should be fixed on buttonovercolor the machine, also it is possible to supply couplings without pipe.

2.12. When screwing pipes types 1 and 2 with couplings of their threads should be coated with grease to protect the threads from chipping and corrosion.

2.13. With the purpose of protection from corrosion the outer surface of each pipe and couplings shall be painted.

Note. By agreement with the consumer it is possible to supply pipe couplings are unpainted or covered with neutral grease.

2.14. The profile and dimensions of the thread profile of the pipe type 1 or type 2 and couplings to them (right and left) should match those in hell.5 and in table.7.

Damn.5. The profile and dimensions of the thread profile of the pipe type 1 or type 2 and couplings to them

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

Damn.5

Table 7

Dimensions, mm

Setting thread	The norm of the parameters of the thread
Thread pitch	3,175
Thread depth	1,810
The working height of the profile	1,734
Radii of curvature:	0,508
	0,432
Clearance	0,076
The angle of incline
Taper 2	1:16

Notes:

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

2. The bisector of the angle should be perpendicular to the axis of the pipe thread and coupling.

3. Dimensions and given as reference for the design of threading tools.

2.14.1. Dimensions threaded connections shall be as specified in the hell.6 and in table.8 and 9.

Damn.6. Dimensions threaded connections

and connection, screwed hand

b — coupling, screwed on the machine

1 — end of thread end (the last risk on pipe); 2 — a line parallel to the axis of the pipe thread; 3 — line mean diameter of the thread

Damn.6

Note. The size of a given pipe type 2.

Table 8

Pipes with upset ends and couplings

mm

Conditi- tion pipe diameter	Outside- tion diameter	The average diameter of the thread in the main. - bones	Diameter of thread at end of pipe		Thread length pipe				Dia- meter races the point of coupling face	Internal Rennie thread diameter in. - the bones of the coupling face	Depth Bina RAS point	Distance- ed from the coupling face to the end of a taper thread on the pipe when the pig- chivani by hand (preload)	Re- the course of the coupling face at the end of the thread end to hook up to- Lenno United the exercise	RAS standing- tion from the pipe end to the sulphur- Dina coupling in clips- Lenno United the exercise
outside- NY	internal Rennie	total (end of taper)	to the basics- Noah. - bones (turns full Pro- LEM)	from the basics- Noah. - bone to the end of a taper	thread endnot more than
60	60,3	58,439	57,731	54,111	54,0	39,065	14,935	10	63,5	57,045	3	9,5	1,5	14,5
73	73,0	71,139	69,619	65,999	67,0	52,065	76,2	65,745
89	89,0	87,014	85,494	81,874	67,0	52,065	92,0	85,620
102	101,6	99,714	97,631	94,011	76,0	61,065	104,8	98,320
114	114,3	112,414	109,706	106,086	86,0	71,065	117,5	111,020
127	127,0	125,114	122,406	118,786	86,0	71,065	130,2	123,720
140	141,3	139,414	136,331	132,711	92,0	77,065	144,5	138,020
168	168,3	166,389	162,900	159,280	98,5	83,565	171,5	164,995

Notes:

1. Outer diameter =141,3 mm applies to planted end of the pipe.

2. End of thread end is called the point of intersection 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.

3. Sizes , , is given as reference.

4. Along with cylindrical tapered bore is allowed at the end of the coupling, which forms parallel to the generatrix of the cone of thread. The smallest diameter of the conical bore is a cylindrical bore.

Table 9

Pipe with external upset tubing couplings

mm

Conditi- tion diameter pipe	Outside- tion diameter	The average diameter of the thread in the main. - bones	Diameter of thread at end of pipe		Thread length pipe				The diameter of the RAS the point of coupling face	Internal Rennie thread diameter in. - the bones of the coupling face	Depth Bina RAS point	RAS the distance from the coupling face to the end of a taper thread on the pipe when the pig- chivani by hand (preload)	The transition of the coupling face at the end of the thread end to hook up to- Lenno United the exercise	Distance- ed from the pipe end to the sulphur- Dina coupling in clips- Lenno United the exercise
naru- South	internal Rennie	total (end of taper)	to the basics- Noah. - bones (the turns with the full Pro- film)	from the basics- Noah. - bone to the end of a taper	thread endnot more than
60	67,46	65,576	64,868	61,248	54	39,065	14,935	10	70,0	64,182	3	9,5	1,5	14,5
73	81,76	79,877	78,357	74,737	67	52,065	84,9	78,483
89	97,13	95,244	93,724	Ninety thousand one hundred four	67	52,065	100,3	93,850
102	114,30	112,414	109,706	106,086	86	71,065	117,5	111,020
114	Of 127.00	125,114	122,406	118,786	86	71,065	130,2	123,720
140	154,00	152,114	149,031	145,411	92	77,065	Of 157.2	150,720

Notes:

1. End of thread end is called the point of intersection of the generatrix of the cone of thread end and a generatrix of the cylinder of diameter equal to the outer diameter of the pipe.

2. Sizes , , is given as reference.

3. Along with cylindrical tapered bore is allowed at the end of the coupling, which forms parallel to the generatrix of the cone of thread. The smallest diameter of the conical bore is a cylindrical bore.

2.14.2. The axis of the threads of both ends of the couplings should be the same. Deviation from the alignment shall not exceed 0.75 mm in the plane of the end and 2 mm on a length of 1 m. a higher degree of alignment variations in the plane of the end 1 mm while reducing the deviation on a length of 1 m to 1.5 mm.

2.14.3. Maximum deviations from the nominal thread sizes shall not exceed specified in table.10.

Table 10

Dimensions, mm

Option		Limit deviation
Thread pitch:
on the length of 25.4 mm	±0,075
throughout the length of the	±0,150
Half profile angle		±1°15'
Obliquity (deviation from the difference of the two diameters taken on the thread length 100 mm):
for pipes	+0,30 -0,20
for couplings	+0,20 -0,30
Thread depth		+0,05 -0,1
Length of thread on pipe		+3,2 1.6 million

Notes:

1. Variations in thread pitch, length not exceeding 25.4 mm, allowed for the distance between any two turns of full thread. When the distance between coils of more than 25.4 mm allowed an increase in variance proportional to the increasing distance, but not more than specified in table.10 for the entire length of the thread.

2. Limit deviations in half profile angle relates to the angle between the side of the profile and perpendicular to the axis of the pipe thread and coupling.

3. Deviation of taper refers to the medium diameter of the thread of the pipe and couplings and to the outside diameter of the pipe thread and the internal thread diameter of the coupling.

2.14.4. The tightness of the thread of the finished couplings threaded on the caliber of the tube must be equal to 14.5 mm (see the devil.7, a and table.8 and 9). Limit deviation of ±2.4 mm.

The tightness of the thread on the threaded caliber-ring should be equal to 2.4 mm (see the devil.7, b). Limit deviation of ±2.4 mm, mm, mm.

Damn.7. The tightness of the thread of the finished clutch

1 — measuring a plane of threaded plug gages; 2 — end of thread end (the last risk on the tube); 3 — coupler; 4 — tube; 5 — ring; 6 — a tube; 7 — the measurement plane of the thread gauge ring

Damn.7

2.14.5. When screwing by hand galvanized or phosphated couplings with pipes deviation of the interference (see the devil.6) are ±2.4 mm.

2.14.6. After screwing the pipes and couplings on the machine side of the clutch should come out in the last risk thread on the pipe size =1.5 mm (see the devil.6). Limit deviation of ±2.4 mm.

2.14.7. Distance (see the devil.6) from the coupling face to the start of the thread (first risks) should be 9 mm. maximum deviations of ±3.2 mm.

2.14.8. Threaded pipes and couplings should be smooth, without burrs, flaws and other defects that violate the continuity and solidity.

The roughness of the thread surface should be not more than 20 µm according to GOST 2789−73.

In the first two threads of the thread with a full profile (on the length ) are allowed czernowin at the top of the thread.

2.14.9. For withdrawal of the threading tool in the middle of the clutch can be machined a groove to a depth greater than the thread depth of more than 0.5 mm. the Groove should not have sharp corners (undercuts).

In the absence of grooves allowed overcutting counter-turns of the thread in the middle of the clutch.

Note. The clutches on the length (see the devil.6) can be two threads with kernoviae, starting from the middle on each side.

2.15. Dimensions and limit deviations of the thread profile of the pipe types 3 and 4 should match those in hell.8 and in table.11.

Damn.8. Dimensions and limit deviations of the thread profile of the pipe types 3 and 4

1 — a line parallel to the axis of the pipe thread

Damn.8

Table 11

Dimensions, mm

Setting thread	The norm of the parameters of the thread
Thread pitch	5,08
Taper thread	1:32
The angle of incline	0°53'42"
Thread depth	1,7±0,05
Width of the area of profile peaks	1,99
The width of the Board trench
The radius profile
The radius of curvature of the depressions

Notes:

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

2. The bisector of the angle should be perpendicular to the axis of the pipe thread.

3. All tolerances on the elements of the thread profile, excluding the depth of the thread , this for the design of the threading tool.

4. The end of the cut thread (the last risk on the pipe) can be on a chamfer located between the threaded and conical stabilizing belt.

2.15.1. The dimensions of pipe end with thread and conical stabilizing belt should match those in hell.9 and in table.12.

Damn.9. The dimensions of pipe end with thread and conical stabilizing belt

________________
* Dimensions for reference.

1 — the basic plane; 2 — the estimated plane conical stabilizing belt; 3 — thread end

Damn.9

Note. Thread length is given with a full profile.

Table 12

Pipes with upset ends and conical stabilizing belts

Dimensions, mm

Type of landing	Conditi- tion pipe diameter	Outside- tion diameter	(PREV. off. ±0,05)	(PREV. off. -0,6)	(PREV. off. +1,5 -1,0)						The inner diameter of the thread in the main plane
Inside	89	89,0	88,5	78,5	73,5	83,656	85,5	89,9	140	150	82,60
102	101,6	100,5	90,5	85,5	95,656	97,5	101,9	140	150	94,60
114	114,3	113,5	103,5	98,5	108,656	110,5	115,2	150	160	107,60
127	127,0	128,5	118,5	113,5	123,656	125,5	130,2	150	160	122,60
140	Of 139.7	138,5	128,5	123,5	133,656	135,5	140,2	150	160	132,60
Out	73	73,0	84,5	74,5	69,5	79,656	81,5	85,9	140	150	78,60
89	89,0	100,5	90,5	85,5	95,656	97,5	101,9	140	150	94,60
102	101,6	113,5	103,5	98,5	108,656	110,5	115,2	150	160	107,60
114	114,3	128,5	118,5	113,5	123,656	125,5	130,2	150	160	122,60

Note. Allowed the reduction of the size for pipes with external upset tubing with a diameter of 73 and 89 mm 0.5 mm subject to size conical stabilizing belt and .

2.15.2. Limit deviations of the pitch and the half angle of the thread profile shall not exceed that specified in table.13.

Table 13

Dimensions, mm

Option	Limit deviation
Thread pitch:
on the length of 25.4 mm	±0,05
throughout the length of the	±0,10
Half profile angle	±0°45'

Notes:

1. Deviations of ±0.05 mm thread pitch, length not exceeding 25.4 mm, allowed for the distance between any two turns with full thread. For the distance between coils of more than 25.4 mm permitted deviations increase in proportion to the distance, but not above the specified table.13 for the entire length of the thread.

2. Deviation in half angle refers to the angle between the side profile and perpendicular to the axis of the pipe thread.

2.15.3. Deviation of taper to internal and external thread diameters must not exceed +0.15 to -0,05 mm for the thread length equal to 60 mm.

2.15.4. Diameter in the plane of the conical stabilizing belt should be checked calibre smooth-ring.

The measuring plane of the smooth caliber of the ring shall be placed at a distance of 96 mm from the pipe end (Fig.10). Limit deviations ±2 mm.

Damn.10. The measuring plane of the smooth caliber-ring

1 — ring; 2 — tube; 3 — measuring plane a threaded calibres with full and partial profile; 4 — the measuring plane of the smooth caliber-ring

Damn.10

2.15.5. The pipe end should be perpendicular to thread axis. Any crooked areas is allowed no more than 0.06 mm. Deviation from the plane of the end pipe should not exceed 0.1 mm.

2.15.6. The axis of the thread and the axis of the conical stabilizing belt should match. The deviation from coaxiality should not exceed 0,04 mm.

2.15.7. Raznoshennoy in the plane of the end pipe must not exceed:

4 mm — for tubes with a diameter of 73 mm;

4.5 mm — for pipes with a diameter of 89, 102 mm;

5 mm — for pipes with a diameter 114, 127 and 140 mm.

2.15.8. The surface of the thread conical stabilizing the belt and the pipe end should be smooth, without burrs, flaws and other defects.

At the end of the pipe, there is a risk spiral to a depth of not more than 0.15 mm, obtained by removal of the facing cutter.

On the outer surface of the planted part of the pipe subjected to mechanical treatment, at a distance from the pipe end is allowed to execute the transition with conical stabilizing belt on the cylindrical surface at an angle not more than 15° to the axis of the pipe.

2.15.9. The place of transition of the machined surface of a pipe diameter to an untreated surface of the outer diameter of the landing can be performed at an angle of not more than 15° to the axis of the pipe.

2.15.10. The outer diameter of the landing should be allowed smooth passage of the caliber of rings, whose diameter is 2.5 mm larger than the diameter of the landing .

2.15.11. The surface roughness of the conical thread of the stabilizing ledge and the pipe end should be not more than 20 µm according to GOST 2789−73 and other machined surfaces — not more than 40 microns.

3. ACCEPTANCE RULES

3.1. The inspection of appearance and dimensions should be subjected to each tube and each coupler of the party.

The party should consist of pipes of the same type and same nominal size, same wall thickness, strength group and precision manufacturing, with the same offset in one direction of the thread and be accompanied by one document on quality.

3.2. Verification of the mechanical properties of the metal must be subjected to one pipe and one coupling blank of each size from each heat.

3.3. To check for flattening is taken one pipe of each size of each heat.

3.4. The pipes according to the requirements of mass is checked for each tube batch. Not allowed to make routine weighing.

3.5. Thread pitch, half-angle of profile for pipes of all types, taper the average diameter for tube types 1 and 2, the thread depth for pipes of all types, taper on outside and internal thread diameter, perpendicularity and flatness of the thrust of the pipe end and the coincidence of the axes of the thread and stabilizing the belt for tubes types 3 and 4 have the manufacturer to be checked periodically.

3.6. By agreement between manufacturer and consumer is non-destructive testing of pipes non-destructive method.

3.7. The deviation of the end from perpendicularity to the thread axis, and the alignment manufacturer is allowed to check periodically.

3.8. If unsatisfactory test results of at least one of the indicators it is carried out re-testing at twice the sample taken from the same batch.

The results of repeated tests apply to the entire party.

4. TEST METHODS

4.1. From each selected pipe cut one sample for each test.

(Changed edition, Rev. N 1).

4.2. For testing mechanical properties of metal samples cut out along the planted end of the pipe and the coupling of the workpiece by the method, do not cause changes in the structure and mechanical properties of the metal.

4.3. The tensile test shall be carried out according to GOST 10006−80 short longitudinal samples, and if necessary — on a long longitudinal specimens.

4.4. Test for impact strength shall be carried out according to GOST 9454−78.

4.5. The flattening test shall be carried out according to GOST 8695−75 on ring samples having a width of 60 mm, cut from both ends of the smooth part thermally treated tubes.

When discovering a tapered samples tiny tears or other minor defects resulting from the disclosure of external defects due to the method of production is allowed to re-test flattening of another sample taken from the same batch of pipes with the preliminary removal of the surface layer of the sample (inner and outer) to a depth of not more than 0,2 mm — for pipe diameters up to 102 mm inclusive not more than 1 mm — for pipes with a diameter of 114 mm or more.

The result of this test applies to the whole party.

4.6. Pipes with external upset tubing inner diameter check length of 400 mm from both ends of the tube hard double pattern 150 mm in length.

The diameters of the templates should be less than the nominal internal pipe diameter 2 — 3 mm, tube type 4 — 5 mm. For pipe type 2, nominal diameter: 140 mm allowed to reduce the diameter of the template, up to 5 mm.

Template check all pipe types 2 and 4.

4.7. The contents of sulphur and phosphorus in steel is determined according to GOST and GOST 12347−77 12345−2001. Samples are taken according to GOST 7565−81.

The content of sulfur and phosphorus take the document about the quality of the manufacturer of the workpiece.

(Changed edition, Rev. N 1).

4.8. The curvature at the ends of the pipe sections is calculated as the quotient of arrow deflection in millimeters at a distance from the measurement point to the nearest end of the pipe in meters.

The curvature of the pipes checked straightedge according to GOST 8026−92 and a set of probes for ND.

Note. When measuring the curvature of the pipes with external upset tubing the length of the planted part is not taken into account.

(Changed edition, Rev. N 1).

4.9. Taper threads of all types for the external diameter of each tube and internal diameter of each clutch is tested sleek tapered gages (rings and plugs complete or incomplete), or special devices.

4.10. The tightness of the pipe thread types 3 and 4 should be checked smooth calibre-ring, threaded caliber-ring with an incomplete profile and a threaded caliber-ring with a full profile.

The measuring plane of the smooth caliber-rings should not reach the end of the pipe or go over the end of not more than 3.2 mm (see the devil.10). The measuring plane of the thread gauge ring with an incomplete profile and a thread gauge ring with a full profile should go at the end of the tube or to reach the end not more than 2.0 mm (see the devil.10).

4.11. The deviation of the taper of the stabilizing belt may not exceed ±0.05 mm on the length of the smooth caliber-ring.

4.12. The thread tension must be checked for each pipe type 1 or type 2 threaded caliber-ring that is made according to GOST 10653−84.

The measuring plane of the gauge-rings should not reach the end of the tube by the amount equal to 2.4 mm (see the devil.7).

When nevinchany caliber-ring on the pipe to the measuring plane of the ring may not reach the end of the tube to a value of 2.4mm or may coincide with the end of the tube.

4.13. Check the tightness of the thread couplings for pipes of types 1 and 2 should be undertaken each coupling threaded caliber-tube, made according to GOST 10653−84.

Screwing the calibre of the tube in the coupling plane of the measuring tube should not reach the end of the coupling magnitude , with maximum deviations of ±2.4 mm (see the devil.7).

4.14. In disputed cases, the tightness of tubes of the types 1 and 2 and couplings must be checked the new screw sizes (rings and tubes).

4.15. Check the alignment of the threads of couplings for pipes of types 1 and 2 should be subjected to at least 1% of clutches.

To check the coincidence of the axes of the thread both ends of the coupler screws onto the sliced cylindrical rod, accurately adjusted and centered in the Chuck of a lathe or special tools. In the free end of the coupling is screwed another cylindrical, pure processed rod, length less than 250 mm.

Rotating the coupling, determine runout (twice the amount of deviation from alignment) of the rod at a coupling face and at the end of the rod with a dial indicator with a scale division of 0.01 mm. counting the value of the runout at the end of the rod is conducted from the middle of the clutch.

4.16. Control of external and internal surfaces of pipes is carried out visually. Check the depth of permissible defects is carried out with adproval or other means.

4.17. Control of the outer diameter and ovality of conduct smooth micrometers churchyard 6507−90 and limit gauges according to GOST 18360−93.

The control of wall thickness tube micrometers is carried out according to GOST 6507−90.

Length control is carried out by measuring the GOST 7502−98.

4.16, 4.17. (Added, Rev. N 1).

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Marking, packaging, transportation and storage — by GOST 10692−80 with additions.

5.1.1. To each tube at a distance of 0.4−0.6 m from one end should be marked by stamps, containing:

a) the number of the pipe;

b) group strength;

C) the thickness of the wall;

g) name or trademark of the manufacturer;

d) the month and year of issue.

Place branding should be done with a bright paint.

For pipes with a nominal diameter 60−102 mm size of stamp should be equal to 5−8 mm.

5.1.2. Each coupler should be embossed trademark of the manufacturer.

All hallmarks on pipes and couplings must be embossed along a generatrix of the pipe and coupler. Permitted to apply hallmarks perpendicular to the generatrix of the pipe rolling method.

5.1.3. Next to the marks on each tube along its generatrix should be marked stable light paint:

a) nominal diameter pipe;

b) precision manufacturing (in case of supply of pipes increased accuracy);

C) the panel strength;

g) wall thickness;

d) pipe length in inches.

The height of letters and numbers should be 35−50 mm.

5.1.4. Pipe with left-hand thread needs to have a broad belt light applied paint, signed «Leo».

5.1.5. Pipe thread types 1 and 2 and couplings must be protected from damage by special rings and nipples. The ring should close the thread tubes on a length of not less than minus 3 coils. The nipple needs to close the thread coupling. Thread pipe types 3 and 4, a conical stabilizing the belt and the end face of the pipe must be protected rings from damage.

The design of the rings, and nipples should be easy to loosen them and protect the ends of pipes and couplings against damage.

When nevinchany rings and nipple threads shall be lubricated with anti-corrosion grease.

5.1.6. When shipped in the same car there should be only one conditional pipe diameter, same wall thickness, same accuracy and the same strength group.

5.1.7. Each supplied batch of pipes must be accompanied by a document certifying the conformity of their quality with the requirements of this standard and containing:

a) the name of the organization, which includes the manufacturer;

b) the name of the manufacturer;

C) name of the customer;

d) nominal pipe diameter and wall thickness in millimeters, and the length of the pipe in meters;

d) type of landing and precision manufacturing;

e) the band strength, number of melt, the sulphur and phosphorus contents for all members of the party heats;

W) number of tubes (for each heat);

h) the results of the mechanical and technological tests;

I) the direction of the thread («lion» in the supply pipe with left-hand thread);

K) the designation of this standard.

5.1.8. Requirements to marking and packaging of pipes in the supply for export must comply with the order of foreign trade organizations.