GB/T 33167-2016石油化工加氢装置工业炉用不锈钢无缝钢管国家标准
英文:Seamless stainless steel tubes and pipes for industrial furnace of petroleum and chemical hydrogenation unit GB/T 331...
英文:Seamless stainless steel tubes and pipes for industrial furnace of petroleum and chemical hydrogenation unit GB/T 331...