Diameter is neither an essential, supplementary essential, nor nonessential variable for WPS qualification for common welding processes. Therefore, any groove weld qualifies groove welds for all diameters for the WPS.
Diameter is an essential for weldor performance qualification for those same processes. (see QW-353 through QW-357)
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of rafeeqmahadighar rahman
Sent: Monday, July 02, 2012 11:32 AM
To: materials-welding@googlegroups.com
Subject: [MW:14742] Diameter Qualiffication Range for WPS per section IX
Dear Experts,
Accordance with section IX does the Pipe diameter range is an essential variable for WPS?
for example the PQR coupon has qualified on 8" dia, does it qualify for all or 2 7/8" and above.
appreciate your valuable input.
Warm Regards'
Rafeeq
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