Steels for use in rail vehicle construction - Part 1: Hot-rolled, unalloyed structural steels and hot-rolled structural steels with improved atmospheric corrosion resistance
轨道车辆材料.钢.第1部分:热轧结构钢和耐大气腐蚀性能提高的结构钢;选定标准
1997-05-01
BS 4848-2-1991
Hot-rolled structural steel sections-Specification for hot-finished hollow sections
热轧结构型钢.第2部分:热加工空心型钢规范