Railway track materials, Part 20: Welding of steel rail
铁路轨道材料第20部分:钢轨焊接
发布日期:
2020-06-23
本标准的目的是为铁路轨道的所有者和维护者提供铁路轨道用钢轨钢焊接工艺的规范和鉴定方法。
The objective of this Standard is to provide owners and maintainers of railway track with specifications for and means of qualification of welding procedures for use with rail steel in railway track.