Home / Standards / GB/T 40937-2021 GB/T 40937-2021 Active Plastic piping systems—Determination of long-term strength for plastic composite pipes and fittings 塑料管道系统 塑料复合管材和管件长期强度的测定方法 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2021-11-26 Implementation 2022-06-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A