NB/T 10948-2022 煤矿液压支架用无缝钢管.pdf附件大小:3.88MB附件格式:1个直链文件,格式为pdf 资源简介:ICS77.140.75CCS H 48NB中华人民共和国能源行业标准NB/T10948-2022煤矿液压支架用无缝钢管Seamless steel tubes for powered support in coal mine2022-05-13 发布20
NB/T 10948-2022 煤矿液压支架用无缝钢管附件大小:3.88MB附件格式:1个直链文件,格式为pdf 资源简介:ICS 77.140.75CCS H 48 NB中华人民共和国能源行业标准NB/T10948-2022煤矿液压支架用无缝钢管Seamless steel tubes for powered support in coal mine2022-05-13发布2022-