Pipe Welding Procedure

Pipefitting

Year 1-250 XP

Put the pipe butt-weld procedure steps in the correct order for a carbon steel pipe joint.

Drag to reorder, or use the arrow buttons.

1Verify pipe material and wall thickness match the WPS (Welding Procedure Specification)

2Complete fill and cap passes using SMAW or FCAW

3Bevel pipe ends to 37.5° and clean to bright metal

4Visually inspect and mark weld with welder ID

5Weld root pass using GTAW (TIG) process

6Set up argon back-purge inside the pipe

7Weld hot pass immediately after root to prevent cracking

8Fit up joint with proper root gap (1/8") using tack welds