WPQ – Qualified Thickness & Diameter Limits ASME IX
- According to ASME BPVC.IX-2019, Table QW-452.1(b) – Thickness of weld metal qualified
- According to ASME BPVC.IX-2019, Table QW-452.3 – Groove weld diameter limits
- t – (weld thickness) the “Thickness of Weld Metal” is the total weld metal thickness deposited by all welders and all processes in the test coupon exclusive of the weld reinforcement.
- WQT / WPQ – Welder Qualification Test / Welder Performance Qualifications.
- QW-142 SPECIAL EXAMINATIONS FOR WELDERS. Radiographic or Ultrasonic examination per QW-191 may be substituted for mechanical testing of QW-141 for groove‐weld performance qualification as permitted in QW-304 to prove the ability of welders to make sound welds.