ISO 11970:2016规定了铸钢件生产焊接的焊接工艺规范（WPS）如何合格。 它定义了焊接工艺评定试验的执行条件，以及在基本变量范围内所有实际焊接操作的合格焊接工艺的有效性限制。 除非买方或合同双方另有规定，否则试验应按照本国际标准进行。 ISO 11970:2016适用于钢铸件的电弧焊。根据缔约方之间的协议，本国际标准的原则可适用于其他熔焊工艺。 对于特定的服务、材料或制造条件，买方可指定比本国际标准规定的更全面的测试，以获得更多信息，例如:。 g、 纵向焊缝拉伸试验、弯曲试验、化学分析、奥氏体不锈钢中铁素体的测定、伸长率、夏比V型冲击试验和射线照相。

ISO 11970:2016 specifies how a welding procedure specification (WPS) for production welding of steel castings is qualified. It defines the conditions for the execution of welding procedure qualification tests and the limits of validity of a qualified welding procedure for all practical welding operations within the range of essential variables. Tests are intended to be carried out in accordance with this International Standard unless additional tests are specified by the purchaser or by agreement between the contracting parties. ISO 11970:2016 applies to the arc welding of steel castings. The principles of this International Standard can be applied to other fusion welding processes subject to agreement between the contracting parties. In the case of specific service, material or manufacturing conditions, tests more comprehensive than those specified by this International Standard can be specified by the purchaser, in order to gain more information, e.g. longitudinal weld tensile tests, bend tests, chemical analyses, ferrite determination in austenitic stainless steels, elongation, Charpy "V" impact tests, and radiography.