Railway applications - Welding of railway vehicles and components - Part 2: Quality requirements and certification of welding manufacturer
铁路应用 - 铁路车辆和部件的焊接 - 第2部分:焊接制造商的质量要求和认证
This series of standards applies to welding of metallic materials in the manufacture and maintenance of railway vehicles and their parts.
This part of the series defines the certification levels as well as the requirements for welding manufacturers and describes the procedure for the recognition of welding manufacturers.