While ASME publishes hundreds of standards, is the primary "qualification code" used globally for welding, brazing, and fusing. It does not dictate how to build a specific product—that is the job of "construction codes" like Section VIII (Pressure Vessels) or B31.3 (Process Piping)—but it defines the rules for ensuring a weld will be reliable. 1. Welding Procedure Specification (WPS)
For a fabrication shop to comply with ASME welding standards: welding standard asme
You cannot change the WPS without a new PQR. You cannot let a welder work without a valid WPQ. While ASME publishes hundreds of standards, is the
A change in any essential variable invalidates the WPS and requires a new PQR. Welding Procedure Specification (WPS) For a fabrication shop
Includes variables like material type, filler metal, and temperature. 2. Procedure Qualification Record (PQR) A record of the welding data used to weld a .
Includes actual variables used and the results of .