| Only one pre–prepared test coupon shall be given to each competitor.
The Best Pipe Welders' tests shall be conducted on joining of two pieces of 150 mm dia. Sch 80 pipes in 6G position with 2.5mm root gap, 2.5mm root face, 60-65 degree angle by SMAW process. E6010 electrodes (2.5 mm dia.) will be used for root and E 7018 (3.15mm dia.) electrodes for subsequent passes. Grinding will not be allowed in root / and subsequent passes. Maximum time for completion of welding the test piece allowed shall be three hours.
The test weld joints shall be subjected to visual and radiographic tests for evaluation. |