GOST 16037-80

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  ГОСТ 16037-80

GOST 16037−80 welded Joints of steel pipelines. Main types, design elements and dimensions (with Change No. 1)

GOST 16037−80

The Group B05

INTERSTATE STANDARD

WELDED JOINTS OF STEEL PIPELINES

Main types, design elements and dimensions

Welded joints in steel pipelines.
Main types, design elements and dimensions

ISS 25.160.40
OKP 06 0200 0000

Date of introduction 1981−07−01

Resolution of the USSR State Committee for standards from April 24, 1980 N 1876 date of introduction is established 01.07.81

Limitation of actions taken by Protocol No. 5−94 of the Interstate Council for standardization, Metrology and certification (ICS 11−12−94)

REPLACE GOST 16037−70

EDITION (July 2005) with amendment No. 1, approved in December 1990 (IUS 3−91).

1. This standard applies to welded joints of pipelines from steel and establishes the basic types, design elements and dimensions welded joints of pipes with pipes and fittings.

The standard does not apply to welded joints used for making pipes themselves from sheet or strip material.

The requirements of this standard are mandatory.

2. In the standard the following notation methods of welding:

RFP — arc welding in shielding gas consumable electrode;

ZN — arc welding in shielding gas consumable electrode;

R — manual arc welding;

F — arc welding under flux;

G — gas welding.

For structural elements of pipes, valves and welded joints the following notation:

;  — wall thickness of the welded parts;

the gap between the edges of the welded parts after tacking;

 — the width of the weld;

the convexity of the weld;

 — the thickness of the backing ring;

 — the thickness of the seam;

 — dulling of the edge;

 — overlap width;

 — the length of the coupling;

 — leg fillet weld;

 — leg fillet weld in from the connector side of the flange;

 — the outer diameter of the pipe;

 — chamfer flange.

1, 2. (Changed edition, Rev. N 1)

.

3. Main types of welded joints shall be as specified in table.1.

Table 1

Connection type	Form homework- Lenno edges	The nature of the welded seam	The cross-sectional shape		Wall thickness and minimum outside diameter of pipe, mm, for welding methods					Conditional symbol tion of a welded joint
prepared granted edges	weld	SN	ZN	R	F	G
Butt the connection pipe with pipe or fittings	Bevel	Agnosto- Ronny			2−5 25	2−3 10	2−5 25	4−6 133	1−3 150	S2
Agnosto- Ronny removable lining			2−4 25	2−3 25	-	-	C4
Agnosto- Ronny for the remaining type- Ceska lining			2−3 25	C5
The beveled one edge	Agnosto- Ronny			3−20 25	-	3−20 25	C8
Agnosto- Ronny for the remaining type- Ceska lining			2−20 25	-	2−20 57	C10
The beveled edges	Agnosto- Ronny			3−20 25	3−20 14	3−20 25	3−7 14−150	C17
Agnosto- Ronny removable lining			2−40 25	2−40 10	2−40 25	6−40 377	-	S18
Agnosto- Ronny for the remaining type- Ceska lining			2−20 25	2−20 10	2−20 25	-	C19
Butt the connection pipe with pipe or fittings	The beveled edges	Agnosto- Ronny with the melt- to insert			4−20 25	4−20 25	4−20 25	С46
Crooked straight — line bevel edge	Agnosto- Ronny			-	5−6 25	-	С47
Crooked straight — line bevel edge with the bore			6−25 25	C48
The beveled edges with the bore	Agnosto- Ronny for the remaining type- Ceska lining			6−20 25	6−20 25	6−20 57	С49
Agnosto- Ronny for the remaining conical lining			S50
The beveled edges with the distribution			2−6 25	2−6 10	-	С51
With Rivoli — nanim the bevel edge with the bore	Agnosto- Ronny for the remaining type- cal lining			7−60 25	7−60 25	7−60 57	7−60 377	C52
			16−60 68	-	16−60 68	16−60 377	C53
Splice sectors of elbows (bends)	The beveled edges	Bilat- Ronny			3−25 108	-	3−25 108	-	С54
Agnosto- Ronny removable lining			С55
Butt flange connection with the pipe	With two asymmetrically cut organza fabric. — richnyj bevels two edges	Bilat- Ronny			3−40 70	3−40 70	С56
Lap connection intermediate the fitting or nipple with a pipe	Bevel	Agnosto- Ronny			2−5 14	2−5 10	2−5 22	1−5 6−150	H1
Lap-connection of pipes with the distribution of one end of the pipe				2−20 14	-	2−20 25	1,6−7 14−150	H3
Lap pipe joint coupling	Bevel	Agnosto- Ronny double			2−20 14	2−20 25	1,6−7 14−150	H4
Gusset flange or ring tube	With bevel	Agnosto- Ronny with the distribution and razvala- the PCD			2−12 14	2−12 14	-	У15
Bevel	Bilat- Ronny			2−15 14	-	2−15 14	V5
With bevel	Bilat- Ronny			2−15 14	2−15 14	U7
With a symmetrical bevel			U8
Angular connection of the Appendix with a tube of equal dimensions	Bevel	Agnosto- Ronny			2−4 14	-	2−4 25	У16
The gusset of the Appendix, derivation of the fitting or prevarila with the pipe	Bevel	Agnosto- Ronny			2−20 14	2−20 14	2−20 25	1−7 14−150	У17
		2−25 14	2−25 14	2−25 25	У18
The gusset of the Appendix, derivation of the fitting or prevarila with the pipe	With bevel	Agnosto- Ronny			4−25 14	4−25 14	4−25 25	У19
Agnosto- Ronny on type- as a result, the us			4−20 12	4−20 12	4−20 25	У20
The gusset junction fitting or prevarila with the pipe		Agnosto- Ronny removable lining			У21
Note. In the column «wall Thickness and minimum outside diameter of the pipe for welding methods» in the numerator of the given limit of the wall thickness, and the denominator of minimum outside diameters of pipes with the exception of the corner joints, which is given for the limiting wall thickness and minimum outside diameters of the branches (branches, branch fittings and PrimaryKey); for joints made of gas welding, the denominator of the given limit values of the outer diameters.

4. Structural elements and their dimensions shall be as specified in table.2−33.

Table 2

Dimensions, mm

Designation of a welded joint	Constructive elements and dimensions		Welding method	=
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.	But- min.	Pred. off.
S2			SN; R	2,0	0,5	+0,5	4	+2	-	-
3,0	1,0
4,0−5,0	1,5
F	4,0	8
6,0	10
	ZN	2.0 to 3.0	0	+0,3	-	-
	G	1.0 to 1.6	0,5	±0,3	3	+1	0,5	+0,5
2.0 to 3.0	1,0	±0,5	4	+2	1,0	±0,5

Table 3

Dimensions, mm

The symbol weld	Structural elements		Method welding	=
prepared edges of the welded parts	weld
C4			R; ZN	2−3
SN	2−4

Table 4

Dimensions, mm

The symbol weld	Design elements and dimensions		Method welding	=
prepared edges of the welded parts	weld
C5			SN; ZN; P	2−3

Table 5

Dimensions, mm

The symbol svar- tion connection	Design elements and dimensions		SPO — sob swar — Ki	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
C8			SN; R	3	1	+0,5	0,5	+0,5	8	+2	1,5	+1,5 A 1.0
4	10
5	11
6	12
7	13	+3
8	14	2,0	+2,0 -1,5
9	2	1,0	±0,5	16	+4
10	18
12	+1,0	20
14	22	+5
16	25
18	27
20	29	+7

Table 6

Dimensions, mm

Conditi- ing the notation of swar- tion connection	Constructive elements and dimensions		SPO- sob svar- Ki	=
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.	But- min.	Pred. off.
C10			SN; R	2	2	+2	9	+2	1,5	+1,5 A 1.0
3	10
4	11
5	12	+3
6	13
7	14	+4
8	4	±1	16	2,0	+2,0 A 1.0
9	18
10	19
12	5	+2	21	+5
14	-1	23	+6
16	26
18	28
20	31	+7

Table 7

Dimensions, mm

Conditi- Noah the notation svar- tion connection	Constructive elements and dimensions		SPO — sob swar — Ki	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
C17			SN; ZN; R; G	3	1,0	+0,5	0,5	+0,5	7	+2	1,5	+1,5 A 1.0
4	8
5	1,5	1,0	±0,5	9
6	11
7	12	+3
SN; ZN; R	8	2,0	+1,0	Thirteen
10	16	+4	2,0	+2,0 -1,5
12	18
14	21
16	+1,5	1,5	23	+6
18	26
20	28
Note. When welding ZN clearance =0.

Table 8

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob svar- Ki	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
S18			SN; ZN; R	2	2	+1,0	7	+2	1,5	+1,5 -1,0
3−4	8
5	10
SN; ZN; R; F	6−8	3	+1,0 -0,5	13	+3
9−10	15
12	18
14	4	+1,0	22	+4
16	24	2,0	+2,0 -1,5
18	26	+5
20	29
25−30	6	±1,0	39	+7
35−40	50

Table 9

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob svar- Ki	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
C19			SN; ZN; R	2	2	+1,0	7	+2	1,5	+1,5 A 1.0
3	8
4	9
5	10
6	3	+1,0 -0,5	12	+3
7	13	+4
8	14
10	16	+5	2,0	+2,0 -1,5
12	18
Fourteen	5	±1,0	23	+6
16	25	+8
18	27
20	30

Table 10

Dimensions, mm

Conditional notation- increase welded United tion	Constructive elements and dimensions		Method welding	=
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.
С46			SN; ZN; R	4	9	+2	1,5	+1,5 A 1.0
5	10
6	11
7	12
8	13
9	14	+3
Ten	15	2,0	+2,0 -1,5
12	17
14	18
16	22	+5
18	24
20	27

Table 11

Dimensions, mm

Designation of a welded joint	Constructive elements and dimensions		Welding method	=
prepared edges of the welded parts	weld
С47			ZN	5−6
___________ * May increase to 2 mm.

Table 12

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob svar- Ki	=
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.
C48			ZN	6	16	+3	2,0	±0,5
7	17
8
9	18	3,0	±1,0
10
12	20	+4
14	23	4,0
16
18	27
20
25	30
__________ * May increase to 2 mm.

Table 13

Dimensions, mm

Conditional designation of a welded joint	Constructive elements and dimensions		SPO — sob SVA- RCTs	=							+0,2
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
С49			SN; ZN; R	6	3	+1,0 -0,5	12	+3	1,5	+1,5 A 1.0	2,5 (if to 150 incl.) The 3.0 (if over 150)
7	13
8	14
9	15	2,0	+2,0 -1,5
10	16
12	18	+4
14	5	±1,0	23
16	25
18	27
Twenty	30
Note. In the method of welding a 3H gap =2,5.

Table 14

Dimensions, mm

Designation of a welded joint	Constructive elements and dimensions		SPO- sob svar- Ki	=
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.
S50			SN; ZN; R	6	22	+3	2,5	+1,5
7	+4
8	23
9	+5	3,5	+2,0
10	24
12	27
14	28	+6
16	29	+8
Eighteen	30
20	33

Table 15

Dimensions, mm

The symbol welded connection	Constructive elements and dimensions		Method welding	=	+2
prepared edges of the welded parts	weld
С51			SN; ZN	2	11
3	12
4	13
5	14
6

Table 16

Dimensions, mm

Conditi- ing notation- increase svar- tion of the United tion	Constructive elements and dimensions		SPO- sob svar- Ki	=		+6			±1°
prepared edges of the welded parts	weld	But- min.	Pred. off.
C52			R; SN; F; ZN	7	4	18	2	±2	22°
11	21
16	6	27	15°
20	29
22	30
30	34
32	35	3	+2 -3
36	38
40	36
45	38	12°
60	48

Table 17

Dimensions, mm

Conditional notation- increase welded United tion	Constructive elements and dimensions		SPO- sob svar- Ki	=	+6
prepared edges of the welded parts	weld	But- min.	Pred. off.
C53			R; SN; F	16	26	2	±2
20	30
22
30	33
32	3	+2 -3
36	35
40	36
45	37
60	46

Table 18

Dimensions, mm

The symbol weld	Constructive elements and dimensions		SPO — sob SVA- RCTs	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But- min.	Pred. off.	But — min.	Pred. off.
С54			SN; R	3	1,5	+1,5 -0,5	8	+2	1,5	+1,5 A 1.0
4	9
5	10
6	12	+3
7	13	+4
8	14
10	2,0	+1,0 -0,5	16	2,0	+2,0 -1,5
12	18	+5
14	20
16	3,0	22
18	24	+6
20	Twenty six
22	28
24	30	+7
25	32

Table 19

Dimensions, mm

The symbol weld	Constructive elements and dimensions		SPO — sob SVA- RCTs	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
С55			SN; R;	3	2	+1,0	8	+2	1,5	+1,5 A 1.0
4	9
5	10
Six	3	+1,0 -0,5	12	+3
7	13	+5
8	14
10	16	+6	2,0	+2,0 -1,5
12	4	18	3,0
14	21
16	23	+7
18	25
20	28
22	5	31	4,0
24	33
25	35

Table 20

Dimensions, mm

The symbol weld	Constructive elements and dimensions		SPO — sob svar- Ki	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
С56			SN; R	3	1,5	+1,0 -0,5	5	+2	1,5	+1,5 A 1.0
4	7
5	8
6	9
7	2,0	+2,0 -0,5	10	+3
8	12
10	14	+4	2,0	+2,0 -1,5
12	16
14	20	+6
16	22
18	24	+8
20	Twenty six
25−30	35	3,0
35−40	48

Table 21

Dimensions, mm

The symbol weld	Constructive elements and dimensions		Method welding		+2
prepared edges of the welded parts	weld
H1			G	1,0	2
1,5
SN; ZN; R; G	2,0	3
2,5
3,0	4
3,5	5
4,0
5,0	7
Note. Allowed the use of the fittings and nipples are chamfered.

Table 22

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob svar- Ki			, no more
prepared edges of the welded parts	weld
H3			SN; R	2−20		30 (in up to 32 incl.) 40 (at 32 St. to 108 incl.) 50 (at St. 108)
G	1,6−7,0

Table 23

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob SVA- RCTs			±5
prepared edges of the welded parts	weld
H4			SN; R	2−20	1,3	40 (with less than 32) 50 (at St. 32 to 108 incl.) 60 (at more 108)
G	1,6−7,0

Table 24

Dimensions, mm

Designation of a welded joint	Constructive elements and dimensions		Method welding			, not less than	, no more
prepared edges of the welded parts	weld
У15			SN; R	14−25	-1	3	0,05
32−57	4
76−159	5
194	6
Note. The value «» is determined by the design.

Table 25

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob SVA- RCTs		, no more
prepared edges of the welded parts	weld
V5			SN; R	2−15	0.5 (when up to 45 incl.) 1,0 (at 45 St. to 194 incl.) 1,5 (at 194 St)		(if to 3 incl.) 3 (with St. 3)

Table 26

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob SVA- RCTs		, not Bo- Lee		, not me- it
prepared edges of the welded parts	weld
U7			SN; R	14−25	0,5	-1	3	(if to 3 incl.) 3 (with St. 3)
32−57	4
76−159	1,0	5
194	6
219	1,5	7
245	8
273−325	9
377−530	10
Note. The value «» is determined by the design.

Table 27

Dimensions, mm

The symbol weld	Constructive elements and dimensions		Method welding		, no more		, not less than
prepared edges of the welded parts	weld
U8			SN	14−25	0,5	-1	3
32−57	4
76−159	1,0	5
194	6
219	1,5	7
245	8
273−325	9
377−530	10
Note. The value «» is determined by the design.

Table 28

Dimensions, mm

Conditi- ing the notation of swar- tion connection	Design elements and dimensions		SPO- sob SVA- RCTs	=
prepared edges of the welded parts	weld	But — min.	Pred. off.	But — min.	Pred. off.	But — min.	Pred. off.
У16			SN; R	2	3	+1	1,5	+1,0 -0,5	4	+2
3
4	4	6

Table 29

Dimensions, mm

The symbol weld	Constructive elements and dimensions		Method welding		, no more
prepared edges of the welded parts	weld
У17			G	1−7	1	1 3 thickness of thinner part
SN; ZN; R	2−20	2
Note. The compound is applied when the ratio of the outer diameter of the pipe branch to the outside diameter of the pipe not more than 0.5.

Table 30

Dimensions, mm

Designation of a welded joint	Constructive elements and dimensions		Welding method		no more
prepared edges of the welded parts	weld
У18			G	1−7	1	1 3 thickness of thinner part
SN; P; ZN	2−25	2
Note. The compound is applied when the ratio of the outer diameter of the pipe branch to the outside diameter of the pipe more than 0.5.

Table 31

Dimensions, mm

The symbol weld	Constructive elements and dimensions		Method welding				+2
prepared edges of the welded parts	weld	But- min.	Pred. off.
У19			SN; ZN; R	4	8	+2	3
5	10
6	11
8	14	+3
10	16	+4
12	19	5
14	22	+5
16	24	+6
18	26
20	28
22	30
25	33

Table 32

Dimensions, mm

Conditi- ing the designation svar- tion connection	Constructive elements and dimensions		SPO- sob SVA- RCTs
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.	But- min.	Pred. off.
У20			SN; R; ZN	4−5	3	+1,0 -0,5	11	+4	2,5	+1
6	4	±1,0	14	4,0	+3
8	16	+5	6,0
10	19	+7	8,0
12	5	21	9,0
14	24	+8	10,0
16	26	11,0	+4
18	28	13,0
20	30	14,0
Notes: 1. When welding ZN clearance =2,0. 2. Length protecive part of Primorye, part of the pipe, is set when designing the connection. 3. The value given after boring.

Table 33

Dimensions, mm

Designation of a welded joint	Constructive elements and dimensions		Method welding
prepared edges of the welded parts	weld	But- min.	Pred. off.	But- min.	Pred. off.	But- min.	Pred. off.
У21			SN; ZN; R	4−5	3	+1,0 -0,5	10	+2	2,5	+1
6	4	±1,0	11	+4	4,0	+3
8	14	6,0
10	16	+5	8,0
12	5	19	+7	9,0
14	21	10,0
16	24	+8	11,0	+4
18	26	13,0
20	28	14,0
Note. In the welding method of the NC gap =2,0.

For fillet welds the table below shows the calculated leg.

5. In the manufacture tees and crosses made of pipes shall apply to the types of welded joints established for processes with pipes, and welding of tees, crosses and transitions to pipes or flanges, respectively, the types of welded joints of pipes with pipes or tubes with flanges.

6. Welding butt joints of parts of unequal thickness if the difference is not exceeding the values specified in table.34 should be the same as parts of the same thickness; the structural elements of prepared edges and weld sizes should choose larger thickness.

Table 34

mm

The thickness of the thin parts	The difference between the thicknesses of the parts
To 3	1
SV.3 to 7	2
SV.7 to 10	3
SV.10	4

To implement a smooth transition from one part to another inclined position of the surface suture (Fig.1).

Damn.1

If the difference in thickness of the welded parts more than the values specified in table.34, to the parts with greater thickness , should be made with the bevel to the thickness of thin parts of s, as indicated on the devil.2 and 3. While the structural elements of prepared edges and weld sizes should choose smaller thickness.

Damn.2

Damn.3

7. The roughness of the machined weld surfaces — not more than 80 µm according to GOST 2789−73.

8. The remaining lining and couplings shall be made of steel of the same grade, from which pipes are made.

For carbon steel pipe is allowed to produce the remaining lining and couplings from steel grades 10 and 20 to GOST 1050−88.

9. The remaining gap between lining and pipe for welded joints that are controlled radiographic method, should be not more than 0.2 mm, and for compounds that are not controlled by radiographies — not more than 0.5 mm.

Local clearances for these compounds are allowed up to 0.5 mm and 1.0 mm, respectively.

10. The gap between the insert and the molten end or the inner surface of the pipe shall be not more than 0.5 mm.

11. In welded connections of processes with pipes allowed connection of the prongs at an angle of 45° to the axis of the pipe.

12. In the compounds У18 and У19 dimensions e and g in the section a-A must be installed in the design, the size e must overlap the wall thinning of the pipe formed by cutting holes, up to 3 mm, and size a must be not less than the minimum wall thickness of the welded parts.

13. Seams with mating side flanges can be replaced by expanding the pipe end.

14. Limit deviation of the leg of a fillet weld , of nominal in cases not covered in the tables should match:

+2 mm when 5 mm;

+3 mm 5 12 mm;

+5 mm — at 12 mm.

15. Allowed convexity fillet weld up to 2 mm when welding in the bottom position and up to 3 mm when welding in different spatial positions. Concave fillet weld up to 30% of the magnitude of the leg, but not more than 3 mm.

(Changed edition, Rev. N 1).

16. For welded joints of pipes with wall thickness more than 4 mm permitted welding of the root pass in a manner different from the basic welding method.