| No | Welding method | Joint types | Weld types |
Weld coefficient |
| 1 |
Forge welding |
Butt welding |
Straight line |
0.6 |
| 2 |
Electric resistance welding |
Butt welding |
Straight or spiral |
0.85 |
| 3 |
Arc welding |
Single face butt weld |
Straight or spiral |
0.8 |
|
0.9 |
||||
|
1.0 |
||||
|
Double butt welding |
0.85 |
|||
|
0.9 |
||||
|
1.0 |