ICS23.040.10;23.040.40CCSH48GB中华人民共和国国家标准GB/T26081一2022代替GB/T26081一2010排水工程用球墨铸铁管、管件和附件Ductileironpipes,fittingsandaccessoriesforsewerageapplications(ISO7186:2011,DuctileironproductsforsewerageapplicaUons,MOD)2022-10-12发布国家市场...

时间:2025-08-20 19:06栏目:标准规范

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