GB/T 34560.5-2017结构钢第5部分:耐大气腐蚀结构钢交货技术条件国家标准
英文:Structural steels—Part 5: Technical delivery condition for atmospheric corrosion resisting steels GB/T 34560.5-2017介绍...
英文:Structural steels—Part 5: Technical delivery condition for atmospheric corrosion resisting steels GB/T 34560.5-2017介绍...