Welding Positions and symbols

 Welding Positions and symbols

The four welding positions and symbols are flat, horizontal,
vertical, and overhead.1F, 2F,3F, 4F.

 

They are defined as follows:

Welding Position 1F, 2gF3F, 4F

Welding Positions

•  Flat position (1F) The flat position is the
welding position used to weld from the upper side of the
joint at a point where the weld axis is approximately horizontal and the weld face lies in an approximately horizontal plane.

•  Horizontal position (2F) The horizontal position is the fillet welding position in which the
The weld is on the upper side of an approximately horizontal surface and against an approximately vertical surface.

 For groove welds it is the position in which the weld face lies in an approximately vertical plane and the weld axis at the point of welding is approximately

•  Vertical position (3F) The vertical position is the welding position in which the weld axis at the welding point is approximately vertical, and the weld face lies in an approximately vertical plane. Welding travel may be up or down. 

When the journey is up, the welding end of the electrode or torch is pointed upward at an angle, ahead of the weld. When the travel is down, the end of the electrode or torch is pointed up and at an angle to the weld pool. 

The travel direction up or down is an essential variable in most codes, so the welder must follow what is stated and proven in the welding procedure.

•  Overhead position (4F) The overhead position is the welding position in which welding is performed from the underside of the joint. The overhead
the position is the reverse of the flat position.

Plate Weld test positions

1F flat position groove weld
2F horizontal position groove weld
3F vertical position groove weld
4F overhead position groove weld

Pipe Weld weld test positions

1G flat position groove weld
2G horizontal position groove weld
3G vertical position groove weld
4G overhead position groove weld

6G and multiple-position groove weld

6GR  Pipe axis 45° Horizontal