ICS3.040.10;3.040.40CCSH48GB中华人民共和国国家标准GB/T6081一0代替GB/T6081一010排水工程用球墨铸铁管、管件和附件DuctileironpipesfittingsandaccessoriesforsewerageapplicationsISO7186:011DuctileironproductsforsewerageapplicaUonsMOD0-10-1发布国家市场监督管理总