Home / Standards / GB/T 34437-2017 GB/T 34437-2017 Active Test method of the oxygen permeability of the multilayer composite plastics pipe 多层复合塑料管材氧气渗透性能测试方法 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A