UNE-EN ISO 11114-4:2017
可运输气瓶 气瓶和阀门材料与气体含量的相容性 第4部分:选择抗氢脆钢的试验方法(ISO 11114-4:2017)
Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 11114-4:2017)