Variables are of three types Įssential Variables (For WPS – QG-105.1 & QW-251.2): A change in the essential variable is considered to affect the mechanical properties (other than toughness) of the welded joint. These parameters have been termed as variables by ASME. A Welding Procedure Specification (for Welding) contains parameters related to the welding process along with the values or range (as applicable) required to produce a sound weld. Fusing Procedure Specification – FPS (for Fusing)Ĭontents of a Procedure specification: The procedure specification i.e. Brazing Procedure Specification – BPS (for Brazing).Welding Procedure Specification – WPS (for Welding).QG 101: Procedure specification: For each material joining process there should be a procedure specification, these procedure specifications are termed as
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