ics91-100-30Q14备案号:12772一2003ic中华人民共和国建材行业标准JC/T923-2003混凝土低压排水管Concretelow一pressuresewerpipes2003-09-20发布2003-12-01实施中华人民共和国国家发展和改革委员会发布JCfT923-2003目次前言···············,,,······,··”······,·······。···········,········,····························一(正)1范围······,······························,·······················································。··············⋯⋯(1)2规范性引用文件·.........................