WPS: Welding Procedure Specification

A Welding Procedure Specification (WPS) is a document that outlines the specific welding procedures and parameters required to produce a sound weld. It provides detailed instructions on variables such as welding techniques, welding positions, preheating, post-weld heat treatment, filler materials, and more. WPSs are typically developed based on industry standards and codes, and they serve as a reference for welders to ensure consistent and quality welds.