What is the difference between WPS and PQR?
WPS is welding procedure specification while PQR is procedure
qualification records is all about welding and denotes design when
it comes to WPS and Mechanical testing of the design when it comes
to PQR. WPS is the design of welding joint, process of welding,
welding position, steel shape and material symmetry, speed of
welding, welding electrodes and filler and many more welding
parameters while PQR is a complimentary to WPS. PQR will be the one
to be tested mechanically and will finally validate if the WPS
viable design of welding.