Home / Standards / GB/T 20674.1-2020 GB/T 20674.1-2020 Active Plastics pipes and fittings—Equipment for fusion jointing polyethylene systems—Part 1:Butt fusion 塑料管材和管件 聚乙烯系统熔接设备 第1部分:热熔对接 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A