This Part specifies the qualification requirements for welding procedure based on pre-production welding test.
This Part is applicable to fusion welding and resistance welding of metallic materials. But in the actual application, the use of this Part can be restricted by an application standard or specification.
2 Normative References
The following normative documents contain provisions which, through reference in this Part of GB / T 19868, constitute provisions of this Part. For dated reference, subsequent amendments (excluding corrigendum content) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this Part are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
GB/T 19868.4-2005 The following standards are cited：
GB/T 19868.4-2005 Cited by the following standards：
