Welding Procedure Specification

A Welding Procedure Specification (WPS) is a formal document describing welding procedures. According to the American Welding Society (AWS), a WPS provides in detail the required welding variables for specific application to assure repeatability by properly trainedwelders and welding operators.

The American Society For Mechanical Engineers (ASME) similarly defines Welding Procedure Specification (WPS) as a written document that provides direction to the welder or welding operator for making production welds in accordance with Code requirements.

The American Welding Society defines welding Procedure Qualification Record (PQR) as a record of welding variables used to produce an acceptable test weldment and the results of tests conducted on the weldment to qualify a Welding Procedure Specification. The American Society of Mechanical Engineers (ASME), similarly defines welding Procedure Qualification Record (PQR) as a record of variables recorded during the welding of the test coupon. The record also contains the test results of the tested specimens.