WQT
WQT
(OP)
A welder is tested according to ASME IX, using a 2" diameter pipe and passed. Is the welder qualified to weld a 3/4" diameter pipe?
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RE: WQT
RE: WQT
The outside diameter tested per Table QW-452.3 is the actual outside diameter, not the NPS size. If the OD of the pipe measures 1.05-inches, the NPS size is 3/4-inch. So, your question has to differentiate between actual test diameter and NPS pipe size.
Are you asking if the welder can weld ¾-inch NPS: yes. Can the welder weld pipe with an outside diameter of ¾-inch: no. A pipe with an outside diameter of 0.84 is a ½-inch NPS pipe.
Best regards - Al
RE: WQT
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-Dik
RE: WQT