Standard 8713 79 electronic version of the university. Main types, structural elements and dimensions
5. When welding circumferential seams of butt joints, an increase in convexity is allowed g, g 1 to 30%.
(Changed edition, Amendment No. 3).
6. Welded joints T7, T8, T4 should be performed in the boat position according to GOST 11969*.
* GOST 11969-79 is in force on the territory of the Russian Federation.
Fillet welds without beveled edges can be made both in the lower position and in the “boat” position according to GOST 11969.
7. Back welding and weld root welding can be performed using any arc welding method.
8. Welding butt joints of parts of unequal thickness with a difference not exceeding the values indicated in the table. 53, must be produced in the same way as parts of the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to their greater thickness.
Table 53
To achieve a smooth transition from one part to another, an inclined position of the seam surface is allowed (Fig. 1).
If the difference in the thickness of the parts being welded exceeds the values indicated in the table. 53, on a part with a large thickness s 1, a bevel must be made on one or both sides to the thickness of the thin part s, as indicated in the devil. 2, 3 and 4. In this case, the structural elements of the prepared edges and the dimensions of the weld should be selected based on their smaller thickness.
9. Size and maximum deviations of fillet weld leg K, K 1 must be installed during design. In this case, the leg size should be no more than 3 mm for parts with a thickness of up to 3 mm inclusive, and 1.2 times the thickness of a thinner part when welding parts with a thickness of over 3 mm. The maximum deviations of the fillet weld leg size from the nominal value are given in Appendix 3.
(Changed edition, Amendment No. 2).
10. (Deleted, Amendment No. 2).
11. Convexity or concavity of a fillet weld up to 30% of its leg is allowed. In this case, concavity should not lead to a decrease in the value of the leg K n (Fig. 5), installed during design.
Note. Cathetus K n is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam behind the leg K n any of the equal legs is accepted, with an asymmetrical seam - the smaller one.
12. The minimum values of fillet weld legs are given in recommended Appendix 1.
13. When using submerged arc welding instead of manual arc welding, the leg of the fillet weld of the design connection can be reduced to the values given in recommended Appendix 2.
14. It is allowed to mix the welded edges before welding relative to each other no more than:
0.5 mm - for parts up to 4 mm thick;
1.0 mm - for parts with a thickness of 4 - 10 mm;
0.1 s mm, but not more than 3 mm - for parts with a thickness of more than 10 mm.
15. In places where welds overlap and where defects are corrected, it is allowed to increase the size of seams up to 30% of the nominal value.
16. When preparing edges using hand tools, the maximum deviations of the edge bevel angle can be increased to ±5°. In this case, the width of the seam can be changed accordingly, e, e 1 .
15, 16. (Introduced additionally, Amendment No. 2).
ANNEX 1
|
Yield strength of welded steel, MPa |
Minimum value of fillet weld legs for a welded element of greater thickness |
|||||||
|
St. 10 to 16 |
St. 16 to 22 |
St. 22 to 32 |
St. 32 to 40 |
St. 40 to 80 |
||||
|
St. 400 to 450 |
||||||||
Note. Maximum value legs should not exceed 1.2 times the thickness of the thinner element.
APPLICATION1 . (Changed edition, Amendment No. 3).
APPENDIX 2
|
Fillet weld leg for welding |
||||
|
manual arc |
submerged |
|||
|
wire with a diameter of 3 to 5 |
wire with a diameter of 1.4 to 2.5 |
|||
|
in the boat position |
in the down position |
in the boat position |
in the down position |
|
APPENDIX 3
APPLICATION3 . (Introduced additionally, Amendment No. 2).
INFORMATION DATA
1. DEVELOPED by the USSR State Committee for Standards, the Academy of Sciences of the Ukrainian SSR
2. INTRODUCED by the USSR State Committee for Standards
3. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated December 26, 1979 No. 5047
5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
6. Tested in 1990. The validity period was removed by Decree of the USSR State Standard of July 3, 1990 No. 2074
7. EDITION (September 2005) with Amendments No. 1, 2, 3, approved in August 1986, January 1989, July 1990 (IUS 11-86, 4-89, 10-90)
5. When welding circumferential seams of butt joints, an increase in convexity is allowed g, g 1 to 30%.
6. Welded joints T7, T8, T4 should be made in the “boat” position according to GOST 11969-79.
Fillet welds without beveled edges can be made both in the lower position and in the “boat” position according to GOST 11969-79.
7. Back welding and weld root welding can be performed using any arc welding method.
8. Welding butt joints of parts of unequal thickness with a difference not exceeding the values indicated in the table. 53, must be produced in the same way as parts of the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to their greater thickness.
Table 53
To achieve a smooth transition from one part to another, an inclined position of the seam surface is allowed (Fig. 1).
If the difference in the thickness of the parts being welded exceeds the values indicated in the table. 53, on a part with a large thickness s 1, a bevel must be made on one or both sides to the thickness of the thin part s, as indicated in the devil. 2, 3 and 4. In this case, the structural elements of the prepared edges and the dimensions of the weld should be selected based on their smaller thickness.
9. Size and maximum deviations of fillet weld leg TO, TO 1 must be installed during design. In this case, the leg size should be no more than 3 mm for parts with a thickness of up to 3 mm inclusive, and 1.2 times the thickness of a thinner part when welding parts with a thickness of over 3 mm. The maximum deviations of the fillet weld leg size from the nominal value are given in Appendix 3.
(Changed edition, Amendment No. 2).
10. (Deleted, Amendment No. 2).
11. Convexity or concavity of a fillet weld up to 30% of its leg is allowed. In this case, concavity should not lead to a decrease in the value of the leg TO n (Fig. 5), installed during design.
Note. Cathetus TO n is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam behind the leg TO n any of the equal legs is accepted, with an asymmetrical seam - the smaller one.
12. The minimum values of fillet weld legs are given in recommended Appendix 1.
13. When using submerged arc welding instead of manual arc welding, the leg of the fillet weld of the design connection can be reduced to the values given in recommended Appendix 2.
14. It is allowed to mix the welded edges before welding relative to each other no more than:
0.5 mm - for parts up to 4 mm thick;
1.0 mm - for parts with a thickness of 4-10 mm;
0.1 s mm, but not more than 3 mm - for parts with a thickness of more than 10 mm.
15. In places where welds overlap and where defects are corrected, it is allowed to increase the size of seams up to 30% of the nominal value.
16. When preparing edges using hand tools, the maximum deviations of the edge bevel angle can be increased to ±5°. In this case, the width of the seam can be changed accordingly, e, e 1 .
15, 16. (Introduced additionally, Amendment No. 2).
| Yield strength of welded steel, MPa | Minimum value of fillet weld legs for a welded element of greater thickness |
|||||||
| St. 10 to 16 | St. 16 to 22 | St. 22 to 32 | St. 32 to 40 | St. 40 to 80 |
||||
| St. 400 to 450 | ||||||||
Note. The maximum value of the legs should not exceed 1.2 times the thickness of the thinner element.
(Changed edition, Amendment No. 3).
| Fillet weld leg for welding |
||||
| manual arc | submerged |
|||
| wire with a diameter of 3 to 5 | wire with a diameter of 1.4 to 2.5 |
|||
| in the boat position | in the down position | in the boat position | in the down position |
|
(Introduced additionally, Amendment No. 2).
INFORMATION DATA
1. DEVELOPED by the USSR State Committee for Standards. Academy of Sciences of the Ukrainian SSR
DEVELOPERS:
I. A. Serebryanik(topic leader) ; L. M. Titkova; M. N. Shabalkin, A. A. Kazimirov(topic leader); V. P. Lozovsky
2. INTRODUCED by the USSR State Committee for Standards
3. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated December 26, 1979 No. 5047
4. INSTEAD GOST 8713-70
5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
6. REISSUE (July 1993) with Amendments No. 1, 2, 3, approved in August 1986, January 1989, July 1990 (IUS 11-86, 4-89, 10-90)
GOST 8713-79
INTERSTATE STANDARD
SUBSTRACT WELDING WELDED CONNECTIONS
BASIC TYPES, STRUCTURAL ELEMENTS
AND SIZES
Official publication
Standardinform
UDC 621.791.753.5.052:006.354
Group B05
INTERSTATE STANDARD
SUBSTRACT WELDING. WELDED CONNECTIONS
Main types, structural elements and dimensions
Flux welding. Welded joints.
Maih types design elements and dimensions
MKS 25.160.40 OKP 06 0200 0000
Date of introduction 01/01/81
1. This standard applies to joints made of steels, as well as alloys on iron-nickel and nickel bases, performed by submerged arc welding, and establishes the main types, structural elements and dimensions of welded joints.
The standard does not apply to welded joints of steel pipelines in accordance with GOST 16037.
2. The standard adopts the following designations for submerged arc welding methods:
AF - automatic on weight;
AFf - automatic on a flux pad;
AFm - automatic with flux-copper lining;
AFo - automatic on the remaining lining;
AFP - automatic on a copper slide;
AFsh - automatic with preliminary application of a weld seam;
AFk - automatic with preliminary welding of the weld root;
MF - mechanized on weight;
MFO - mechanized on the remaining lining;
MFsh - mechanized with preliminary application of a weld seam;
MFk - mechanized with preliminary welding of the root of the seam.
3. The main types of welded joints are given in table. 1, sections of pre-applied back welds are conditionally blackened.
Official publication Reproduction prohibited
© Standards Publishing House, 1980 © Standartinform, 2005
S. 2 GOST 8713-79
GOST 8713-79 S. 3
prepared
Character of the weld
Cross-sectional shape
prepared edges
weld
Conditional
designation
welded
connections
Butt
One-sided
With a broken bevel on one edge
One-sided
S. 4 GOST 8713-79
prepared
Character of the weld
prepared edges
weld
Thickness of welded parts, mm
Conditional
designation
welded
connections
Single-sided locking
With beveled edges
Butt
Double-sided
GOST 8713-79 S. 5
prepared
Character of the weld
Cross-sectional shape
prepared edges
weld
Thickness of welded parts, mm
Conditional
designation
welded
connections
Single-sided locking
Curvily
Butt
slightly beveled edges
Double-sided
With broken bevel edges
One-sided
With broken bevel edges
Single-sided locking
With two symmetrical double-sided bevels
S. 6 GOST 8713-79
prepared
Character of the weld
prepared edges
weld
Thickness of welded parts, mm
Conditional
designation
welded
connections
With two symmetrical edge bevels
Butt
With two symmetrical double-sided curved edge bevels
With two asymmetrical edge bevels
With flange on one edge
One-sided
GOST 8713-79 S. 7
S. 8 GOST 8713-79
prepared
Character of the weld
prepared edges
weld
Thickness of welded parts, mm
Conditional
designation
welded
connections
With a curved bevel of one edge
Tavrovoe
Double-sided
With two symmetrical bevels on one edge
With two asymmetrical bevels on one edge
GOST 8713-79 S. 9
|
Connection type |
prepared |
Character of the weld |
Cross-sectional shape |
welded parts, mm |
Conditional designation welded connections |
|||
|
prepared edges |
weld |
|||||||
|
Tavrovoe |
With two symmetrical curved bevels on one edge |
Double-sided | ||||||
|
Overlapping |
No beveled edges |
One-sided | ||||||
|
Double-sided | ||||||||
(Changed edition, Amendment No. 2, 3).
4. Structural elements of welded joints and their dimensions must correspond to the previously applied weld seams and are conditionally blackened.
Dimensions, mm
indicated in the table. 2-52, sections
table 2
Size for reference.
S. 10 GOST 8713-79
o.6S^a< 0,7 S
|
yeah, no more | |||||||
Note. It is allowed that there is no convexity on the back side of the seam and local concavities with a depth of no more than 0.1 l with complete penetration of the edges. The value of ei should be from 4 mm to 0.5e.
GOST 8713-79 S. 11
|
yeah, no more | |||||
|
St. 10 to 12 | |||||
Conditional
designate
welded
connections
The value of ei should be from 4 mm to 0.5e.
Table 6
Note. The absence of convexity on the reverse side of the seam and local concavities with a depth of no more than 0.1s are allowed if the edges are fully fused.
S. 12 GOST 8713-79
Conditional
welded
|
t, no less |
yeah, no more | |||||
|
St. 10 to 12 | ||||||
Note. The MFO welding method is not recommended for s > 6 mm. The thickness of the lining must be at least 0.25s, but not less than 1.5 mm.
Dimensions, mm
Table 8
Conditional
designate
welded
connections
|
yeah, no more | |||||||
Note: The MFsh welding method is not recommended for thicknesses 3 mm > s > 6 mm.
Dimensions, mm
Table 10
S. 14 GOST 8713-79
|
Conditional designate welded |
Structural elements |
yeah, no more | |||||||||
|
weld | |||||||||||
|
St. 22 to 26 | |||||||||||
|
St. 26 to 30 | |||||||||||
|
St. 16 to 24 | |||||||||||
|
St. 24 to 32 | |||||||||||
* Before welding the first seam, the gap must be filled to 1/3 of the thickness of the base metal with flux, and then to the remaining 2/3 - with grit from
electrode wire, pellets or other granular metal.
Dimensions, mm
Table 11
Conditional
designation
welded
connections
Structural elements
prepared edges of welded parts
weld
Welding method
e v no more
St. 22 to 26
St. 26 to 32
GOST 8713-79 S. 15
Conditional
designation
welded
connections
Note. The absence of convexity on the reverse side of the seam and local concavities with a depth of no more than 0.1s are allowed if the edges are fully fused.
Dimensions, mm
Table 13
|
8, no less |
t, no less | |||||||
|
St. 10 to 12 | ||||||||
|
St. 12 to 14 | ||||||||
|
St. 14 to 16 | ||||||||
|
St. 16 to 18 | ||||||||
|
St. 18 to 20 | ||||||||
|
St. 20 to 24 | ||||||||
|
St. 24 to 30 | ||||||||
S. 16 GOST 8713-79
|
St. 10 to 12 | ||||||
|
St. 12 to 14 | ||||||
|
St. 14 to 16 | ||||||
|
St. 16 to 20 | ||||||
|
St. 20 to 24 | ||||||
|
St. 24 to 30 | ||||||
Table 15
Dimensions, mm
Symbol of welded joint
Structural elements
prepared edges of welded parts
weld
GOST 8713-79 S. 17
S. 18 GOST 8713-79
Conditional
designation
welded
connections
Structural elements
prepared edges of welded parts
weld
Welding method
|
St. 10 to 12 | |||||
|
St. 12 to 14 | |||||
|
St. 14 to 20 | |||||
|
St. 20 to 24 | |||||
GOST 8713-79 S. 19
Conditional
designation
welded
connections
Structural elements
Welding method
prepared edges of welded parts
weld
Dimensions, mm
Table 21
|
8, no less |
t, no less | |||||||
|
St. 10 to 12 | ||||||||
|
St. 12 to 14 | ||||||||
|
St. 14 to 16 | ||||||||
|
St. 16 to 18 | ||||||||
|
St. 18 to 20 | ||||||||
|
St. 20 to 22 | ||||||||
|
St. 22 to 24 | ||||||||
|
St. 24 to 26 | ||||||||
|
St. 26 to 28 | ||||||||
|
St. 28 to 30 | ||||||||
S. 20 GOST 8713-79
Conditional
designation
welded
connections
|
Prev. ogl. |
Prev. ogl. |
|||
|
St. 10 to 12 | ||||
|
St. 12 to 14 | ||||
|
St. 14 to 16 | ||||
|
St. 16 to 18 | ||||
|
St. 18 to 20 | ||||
|
St. 20 to 22 | ||||
|
St. 22 to 24 | ||||
|
St. 24 to 26 | ||||
|
St. 26 to 28 | ||||
|
St. 28 to 30 | ||||
Dimensions, mm
Table 23
|
Conditional welded connections |
Structural elements | |||||||||||
|
prepared edges of welded parts |
weld | |||||||||||
|
St. 16 to 20 | ||||||||||||
|
St. 20 to 24 | ||||||||||||
|
St. 24 to 30 | ||||||||||||
GOST 8713-79 S. 21
Conditional
designation
welded
connections
Dimensions, mm
Table 25
|
St. 10 to 12 | |
|
St. 12 to 14 |
Conditional
welded
Dimensions, mm
2 0 +1 ’° -1.5
Table 26
Symbol of welded joint
Structural elements
prepared edges of welded parts
weld
Welding method
St. 18 to 24
St. 24 to 30
S. 22 GOST 8713-79
|
St. 16 to 20 | ||||||
|
St. 20 to 25 | ||||||
|
St. 25 to 30 | ||||||
|
St. 30 to 35 | ||||||
|
St. 35 to 40 | ||||||
|
St. 40 to 45 | ||||||
|
St. 45 to 50 | ||||||
|
Over 50 to 55 | ||||||
|
St. 55 to 60 | ||||||
Conditional
welded
Dimensions, mm
Table 28
Conditional
welded
|
St. 16 to 20 | ||||||
|
St. 20 to 25 | ||||||
|
St. 25 to 30 | ||||||
|
St. 30 to 35 | ||||||
|
St. 35 to 40 | ||||||
|
St. 40 to 45 | ||||||
|
St. 45 to 50 | ||||||
GOST 8713-79 S. 23
S. 24 GOST 8713-79
|
Prev. ogl. |
Prev. ogl. |
|||
|
St. 20 to 22 | ||||
|
St. 22 to 24 | ||||
|
St. 24 to 26 | ||||
|
St. 26 to 28 | ||||
|
St. 28 to 30 | ||||
|
St. 30 to 32 | ||||
|
St. 32 to 34 | ||||
|
St. 34 to 36 | ||||
|
St. 36 to 38 | ||||
|
St. 38 to 40 | ||||
|
St. 40 to 42 | ||||
|
St. 42 to 45 | ||||
|
St. 45 to 48 | ||||
|
St. 48 to 50 | ||||
|
Over 50 to 55 | ||||
|
St. 55 to 60 | ||||
|
Table 31 |
||||
|
Prev. ogl. |
Prev. ogl. |
|||
|
St. 16 to 20 | ||||
|
St. 20 to 25 | ||||
|
St. 25 to 30 | ||||
|
St. 30 to 35 | ||||
|
St. 35 to 40 | ||||
|
St. 40 to 45 | ||||
|
St. 45 to 50 | ||||
|
Over 50 to 55 | ||||
|
St. 55 to 60 | ||||
Conditional
designation
welded
connections
Dimensions, mm
Conditional
designation
welded
connections
GOST 8713-79 S. 25
Conditional
designation
welded
connections
Note. With the MF welding method, bluntness c = 3 + 1 mm.
Table 33
Dimensions, mm
Conditional
welded
connections
Dimensions, mm
Table 34
Symbol of welded joint
Structural elements
prepared edges of welded parts
weld
Welding method
From 18 to 25 Over 25 to 40 Over 40 to 50
Over 50 to 60
S. 26 GOST 8713-79
Table 36
|
Over 50 to 55 | ||
|
St. 55 to 60 | ||
|
St. 60 to 65 | ||
|
St. 65 to 70 | ||
|
St. 70 to 80 | ||
|
St. 80 to 90 | ||
|
St. 90 to 100 | ||
|
St. 100 to 110 | ||
|
St. 110 to 115 | ||
|
St. 115 to 120 | ||
|
St. 120 to 125 | ||
|
St. 125 to 130 | ||
|
St. 130 to 140 | ||
|
St. 140 to 150 | ||
|
St. 150 to 160 | ||
Conditional
welded
GOST 8713-79 S. 27
Conditional
welded
|
Prev. ogl. |
Prev. ogl. |
|||
|
St. 24 to 26 | ||||
|
St. 26 to 30 | ||||
|
St. 30 to 32 | ||||
|
St. 32 to 34 | ||||
|
St. 34 to 36 | ||||
|
St. 36 to 38 | ||||
|
St. 38 to 42 | ||||
|
St. 42 to 45 | ||||
|
St. 45 to 50 | ||||
|
Over 50 to 55 | ||||
|
St. 55 to 60 | ||||
P. 28 GOST 8713-79
Conditional
designation
welded
connections
Welding method
*Size for reference.
Dimensions, mm
Table 40
Conditional
designation
welded
connections
Welding method
GOST 8713-79 S. 29
Conditional
designation
welded
connections
Welding method
Prev. ogl.
St. 12 to 14
St. 14 to 20
Dimensions, mm
Table 42
Conditional
welded
connections
S. 30 GOST 8713-79
Conditional
designation
welded
connections
Welding method
Prev. ogl.
Welding method
Prev. ogl.
Dimensions, mm
Table 45
Conditional
designation
welded
connections
Welding method
Prev. ogl.
St. 10 to 14
St. 14 to 20
GOST 8713-79 S. 31
Conditional
designation
welded
connections
Structural elements
prepared edges of welded parts
weld
St. 9 to 14 St. 14 to 20 St. 20 to 24 St. 24 to 26 St. 26 to 28
St. 28 to 30
Prev. ogl.
Dimensions, mm
Table 47
Conditional
designation
welded
connections
Structural elements
Welding method
prepared edges of welded parts
weld
|
Prev. off |
|||
|
St. 16 to 18 | |||
|
St. 18 to 20 | |||
|
St. 20 to 22 | |||
|
St. 22 to 24 | |||
|
St. 24 to 26 | |||
|
St. 26 to 28 | |||
|
St. 28 to 30 | |||
P. 32 GOST 8713-79
Conditional
designation
welded
connections
Welding method
Prev. off
St. 18 to 22
St. 22 to 26
St. 26 to 30
St. 30 to 36
St. 36 to 40
Note. With the MF welding method, bluntness c = 3 + 1 mm.
Dimensions, mm
Table 49
|
St. 20 to 24 | |||
|
St. 24 to 28 | |||
|
St. 28 to 34 | |||
|
St. 34 to 40 | |||
GOST 8713-79 S. 33
Conditional
designation
welded
connections
Welding method
Conditional
designation
welded
connections
Welding method
Prev. off
St. 10 to 20
Dimensions, mm
Table 52
Conditional
designation
welded
connections
Welding method
Prev. off
St. 10 to 20
(Changed edition, Amendment No. 1, 2, 3).
P. 34 GOST 8713-79
5. When welding circumferential seams of butt joints, it is allowed to increase the convexity g, gi up to 30%.
(Changed edition, Amendment No. 3).
6. Welded joints T7, T8, T4 should be made in the “boat” position in accordance with GOST 11969*. Fillet welds without beveled edges can be made both in the lower position and in the “boat” position according to GOST 11969.
7. Back welding and weld root welding can be performed using any arc welding method.
8. Welding butt joints of parts of unequal thickness with a difference not exceeding the values indicated in the table. 53, must be produced in the same way as parts of the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to their greater thickness.
To achieve a smooth transition from one part to another, an inclined position of the seam surface is allowed (Fig. 1).
Table 53 mm
If the difference in the thickness of the parts being welded exceeds the values indicated in the table. 53, on a part with a large thickness s h, a bevel must be made on one or both sides to the thickness of the thin part s, as indicated in Fig. 2, 3 and 4. In this case, the structural elements of the prepared edges and the dimensions of the weld should be selected based on their smaller thickness.
9. The size and maximum deviations of the fillet weld leg K, K\ must be established during design. In this case, the leg size should be no more than 3 mm for parts with a thickness of up to 3 mm inclusive, and 1.2 times the thickness of a thinner part when welding parts with a thickness of over 3 mm. The maximum deviations of the fillet weld leg size from the nominal value are given in Appendix 3.
(Changed edition, Amendment No. 2).
10. (Deleted, Amendment No. 2).
11. Convexity or concavity of a fillet weld up to 30% of its leg is allowed. In this case, the concavity should not lead to a decrease in the value of the leg K p (Fig. 5) established during the design.
* In the territory Russian Federation GOST 11969-79 is valid.
Note. The leg K p is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam, any of the equal legs is taken as the leg Kp, with an asymmetrical seam - the smaller one.
12. The minimum values of fillet weld legs are given in Appendix 1.
13. When using submerged arc welding instead of manual arc welding, the leg of the fillet weld of the design connection can be reduced to the values given in Appendix 2.
14. The displacement of the edges to be welded before welding relative to each other is allowed no more than:
0.5 mm - for parts up to 4 mm thick;
1.0 mm - for parts with a thickness of 4-10 mm;
0.1 s mm, but not more than 3 mm - for parts with a thickness of more than 10 mm.
15. It is allowed to increase the size of welds to 30% of the nominal value in places where welds overlap and in places where defects are corrected.
16. When preparing edges using hand tools, the maximum deviations of the edge bevel angle can be increased to ± 5°. In this case, the seam width, e, e, can be changed accordingly.
15, 16. (Introduced additionally, Amendment No. 2).
Note. The maximum value of the legs should not exceed 1.2 times the thickness of the thinner element.
APPENDIX 1. (Changed edition, Amendment No. 3).
Fillet weld leg for welding
|
manual arc |
submerged |
|||
|
wire with a diameter of 3 to 5 |
wire with a diameter of 1.4 to 2.5 |
|||
|
in the boat position |
in the down position |
in the boat position |
in the down position |
|
APPENDIX 3. (Introduced additionally, Amendment No. 2).
INFORMATION DATA
1. DEVELOPED by the USSR State Committee for Standards, the Academy of Sciences of the Ukrainian SSR
2. INTRODUCED by the USSR State Committee for Standards
3. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated December 26, 1979 No. 5047
4. INSTEAD GOST 8713-70
5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
6. Tested in 1990. The validity period was removed by Decree of the USSR State Standard of July 3, 1990 No. 2074
7. EDITION (September 2005) with Amendments No. 1, 2, 3, approved in August 1986, January 1989, July 1990 (IUS 11-86, 4-89, 10-90)
Editor M.I. Maksimova Technical editor N.S. Grishanova Proofreader E.D. Dulneva Computer layout V. I. Grishchenko
Signed for publication on September 28, 2005. Format 60x84*/8. Offset paper. Times typeface. Offset printing. Cond.bake.l. 4.65. Academician-ed.l. 3.90. Circulation 60 copies. Zach. 766. Since 1941.
FSUE “Standartinform”, 123995 Moscow, Granatny per., 4. Typed in IPC Publishing house of standards on a PC.
Printed in the branch of FSUE "Standardinform" - type. "Moscow Printer", 105062 Moscow, Lyalin lane, 6.
| Symbol of welded joint | Structural elements | Welding method | s | g ±2 | e | ||
|---|---|---|---|---|---|---|---|
| weld | Nom. | Prev. off | |||||
| T8 |  |
AF ; MF | From 16 to 18 | 4 | 25 | +4 -7 |
|
| St. 16 to 22 | 5 | 30 | +4 -8 |
||||
| St. 22 to 26 | 6 | 36 | +4 -10 |
||||
| St. 26 to 30 | 7 | 40 | +4 11 |
||||
| St. 30 to 36 | 8 | 50 | +4 -12 |
||||
| St. 36 to 40 | 9 | 56 | +4 -16 |
||||
Table 49
| Structural elements | Welding method | s | h ±1 | g | g 1 ±2 | e | e 1 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| prepared edges of welded parts | weld | Nom. | Prev. off | Nom. | Prev. off | Nom. | Prev. off | |||||
| T4 |  |
 |
AFsh ; MFsh | 20 | 7 | 6 | ±2 | 3 | 26 | +4 -7 |
13 | ±3 |
| St. 20 to 24 | 7 | |||||||||||
| St. 24 to 28 | 8 | 8 | 4 | 29 | +4 -8 |
|||||||
| St. 28 to 34 | 10 | 10 | 5 | 35 | +4-10 | 17 | ||||||
| St. 34 to 40 | 12 | 12 | ±3 | 40 | +4 -11 |
|||||||
(Amendment, IUS 6-2007).
Table 50
| Symbol of welded joint | Structural elements | Welding method | s | e ±2 | g ±2 |
|
|---|---|---|---|---|---|---|
| prepared edges of welded parts | weld | |||||
| T5 |  |
 |
AF | 30 | 16 | 6 |
| St. 30 to 34 | 17 | |||||
| St. 34 to 40 | 18 | |||||
| St. 40 to 42 | 19 | 7 | ||||
| St. 42 to 45 | 20 | |||||
| St. 45 to 50 | 26 | |||||
| Over 50 to 55 | 8 | |||||
| St. 55 to 60 | 28 | |||||
Table 51
| Symbol of welded joint | Structural elements | Welding method | s | b | ||
|---|---|---|---|---|---|---|
| prepared edges of welded parts | weld | Nom. | Prev. off | |||
| H1 | AF ; MF | From 1 to 5 | 0 | +1,0 | ||
| St. 5 to 10 | +2,0 | |||||
| St. 10 to 20 | +3,0 | |||||
Table 52
| Symbol of welded joint | Structural elements | Welding method | s | b | ||
|---|---|---|---|---|---|---|
| prepared edges of welded parts | weld | Nom. | Prev. off | |||
| H2 | AF ; MF | From 1 to 5 | 0 | +1,0 | ||
| St. 5 to 10 | +2,0 | |||||
| St. 10 to 20 | +3,0 | |||||
(Changed edition, Amendment No. 1, 2, 3).
5. When welding circumferential seams of butt joints, an increase in convexity is allowed g, g 1 to 30%.
6. Welded joints T7, T8, T4 should be made in the “boat” position in accordance with GOST 11969-79.
Fillet welds without beveled edges can be made both in the lower position and in the “boat” position according to GOST 11969-79.
7. The underwelding seam and weld root welding can be performed using any arc welding method.
8. Welding of butt joints of parts of unequal thickness with a difference not exceeding the values specified in should be carried out in the same way as parts of the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to their greater thickness.
Table 53
To achieve a smooth transition from one part to another, an inclined position of the seam surface () is allowed.
If the difference in the thickness of the parts being welded exceeds the values specified in, on a part with a large thickness s 1, a bevel must be made on one or both sides to the thickness of the thin part s, as indicated in , and . In this case, the structural elements of the prepared edges and the dimensions of the weld should be selected based on their smaller thickness.
9. Size and maximum deviations of the fillet weld leg TO, TO 1 must be installed during design. In this case, the leg size should be no more than 3 mm for parts with a thickness of up to 3 mm inclusive, and 1.2 times the thickness of a thinner part when welding parts with a thickness of over 3 mm. The maximum deviations of the leg size of fillet welds from the nominal value are given in.
(Changed edition, Amendment No. 2).
10. (Deleted, Amendment No. 2).
11. Convexity or concavity of a fillet weld up to 30% of its leg is allowed. In this case, concavity should not lead to a decrease in the value of the leg TO p(), installed during design.
Note. Cathetus TO n is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam behind the leg TO n any of the equal legs is accepted, with an asymmetrical seam - the smaller one.
12. The minimum values of fillet weld legs are given in the recommended one.
13. When using submerged arc welding instead, the leg of the fillet weld of the design joint can be reduced to the values given in the recommended one.
14. The displacement of the welded edges relative to each other before welding is allowed no more than:
0.5 mm - for parts up to 4 mm thick;
1.0 mm - for parts with a thickness of 4-10 mm;
0,1s mm, but not more than 3 mm - for parts with a thickness of more than 10 mm.
15. It is allowed to increase the size of seams up to 30% of the nominal value in places of overlap and in places where defects are corrected.
16. When preparing edges using hand tools, the maximum deviations of the edge bevel angle can be increased to ±5°. In this case, the width of the seam can be changed accordingly, e, e 1 .
15, 16. (Introduced additionally, Amendment No. 2).
Note: The maximum value of the legs should not exceed 1.2 times the thickness of the thinner element.(Changed edition, Amendment No. 3).
| Fillet weld leg for welding | ||||
|---|---|---|---|---|
| manual arc | submerged | |||
| wire with a diameter of 3 to 5 | wire with a diameter of 1.4 to 2.5 | |||
| in the boat position | in the down position | in the boat position | in the down position | |
| 4 | 3 | 3 | 3 | 3 |
| 5 | 3 | 3 | 4 | 4 |
| 6 | 4 | 4 | 5 | 5 |
| 7 | 5 | 5 | 6 | 6 |
| 8 | 5 | 5 | 6 | 6 |
| 9 | 6 | 7 | 7 | 8 |
| 10 | 6 | 8 | 8 | 9 |
| 11 | 7 | 9 | 9 | 10 |
| 12 | 8 | 9 | 9 | 11 |
| 13 | 8 | 10 | 11 | 13 |
| 14 | 9 | 11 | 12 | 14 |
| 15 | 10 | 12 | 13 | 15 |
| 16 | 10 | 13 | 14 | 16 |
| 17 | 13 | 17 | 17 | 17 |
| 18 | 14 | 18 | 18 | 18 |
| 19 | 15 | 19 | 19 | 19 |
| 20 | 16 | 20 | 20 | 20 |
| 21 | 16 | 21 | 21 | 21 |
| 22 | 17 | 22 | 22 | 22 |
| 23 | 23 | 23 | 23 | 23 |
| 24 | 24 | 24 | 24 | 24 |
| 26 | 25 | 25 | 25 | 25 |
