Home / Standards / GB/T 18742.1-2002 GB/T 18742.1-2002 Abolished Polypropylene piping systems for hot and cold water installations--Part 1:General 冷热水用聚丙烯管道系统 第1部分:总则 Standard Type GBT ICS 83.140.30 CCS G33 Status 废止 Issue Date 2002-05-29 Implementation 2003-01-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A