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How to write AWS D1.1 Prequalified Welding Procedure Specifications

The AWS D1.1 Structural Welding Code for Steel allows fabricators to use prequalified welding procedures (WPSs), saving significant time and money by exempting them from testing. This post outlines an 8-step guide to writing a prequalified WPS, covering selecting approved base metals, weld joints, welding processes, filler metals, shielding gases, and determining preheat, interpass, and post-weld heat treatment. It emphasizes that anyone who understands the code can create these essential documents for quality and productivity.