Verified - Asme Code Welding

For each welding process (e.g., SMAW, GTAW, GMAW, SAW), essential variables are features that, if changed beyond a specified range, require requalification of the Welding Procedure Specification (WPS). Examples:

For a P-No. 1 (carbon steel) groove weld using SMAW with E7018, a proper feature is maintaining preheat at 50°F minimum if thickness > 1 inch, and ensuring interpass temperature does not exceed 450°F if impact testing is required. asme code welding