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Combination of welding procedure

Combination of welding procedure

Combination of welding procedure

(OP)
Hi,

Is someone able to explain the Sec IX QW 200.4 (B)to me...

Thanks

RE: Combination of welding procedure

The short of it is that it permits you to use multiple PQR's to support a WPS, if the PQR was qualified on 1/2" material or greater.  This is most useful in creating dual-process procedures (such as GTAW root pass with SMAW fill), and for increasing thickness qualified.   

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