Welding Procedure Qualification Record

The procedure qualification record is your proof that the welding parameters match the material. Without it, you lack the approval and risk hard zones, hydrogen cracking, or brittle fracture. The report sets the binding values – preheat, interpass temperature, heat input, and any post-weld treatment. These must be strictly followed in production, otherwise the qualification is void. The report must be available to the welder as a work instruction before starting.