THE WELDING INSTITUTE
Welding Positions
Flat: PA / 1G:
Flat PA / 1F
Horizontal vertical:
PB / 2F: Horizontal vertical:
PC / 2G:
Vertical upwards Vertical downwards
PF / 3G PG / 3G
Horizontal overhead Overhead
PD / 4F PE / 4G
Welding Inspection – Welding Terms & Definitions Welding Inspector Rev 09-09-
02
Copyright 2002 TWI Ltd
THE WELDING INSTITUTE
Welding Positions
PA / 1G PC / 2G
Weld: Flat Weld: Horizontal vertical
Pipe: rotated Pipe: Fixed
Axis: Horizontal Axis: Vertical
PG / 5G PF / 5G
Weld: Vertical Downwards Weld: Vertical upwards
Pipe: Fixed Pipe: Fixed
Axis: Horizontal Axis: Horizontal
45o
H-LO 45 / 6G
Weld: Upwards
Pipe: Fixed
Axis: Inclined
Welding Inspection – Welding Terms & Definitions Welding Inspector Rev 09-09-
02
Copyright 2002 TWI Ltd