A qualified WPS does not guarantee the welder is capable. The WPQ certifies the individual welder. The welder must deposit a sound weld using a qualified WPS. The testing for WPQ is generally less extensive than the PQR, focusing primarily on the welder's skill (e.g., bend tests or radiography) rather than the metallurgical properties of the base metal.
There is no “ASME Welding Certificate” alone. Welding certification is audited under the ASME Quality Control System (QSC-1 or equivalent). asme certification welding