Rules for Welding Procedure Qualification
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During welding, must both the thickness of the base material and the thickness of the weld metal meet the requirements specified in the welding procedure qualification report? When butt joints are applicable according to the standards, there are no restrictions on the thickness of the workpieces; yet must the thickness of the weld metal fall within the range specified in the qualification?
When preparing the Welding Procedure Specification (WPS), both the thickness of the base material and the thickness of the weld metal must fall within the scope specified in the welding procedure qualification report； When butt jointing is used in accordance with the standards, there is no limit on the thickness of the welded parts; it is not necessary to take into account the thickness of the weld metal when making evaluations. It is sufficient to carry out the fillet welding in accordance with the process parameters and factors specified in the report ；
When conducting a combined assessment, although their base materials have the same applicable range, the weld thicknesses resulting from different welding methods vary, and their respective applicable ranges for weld thicknesses are also different；