Home / Standards / GB/T 39994-2021 GB/T 39994-2021 Active Determination of six metal elements (iron, calcium, magnesium, zinc, titanium,copper) in polyolefin pipe system 聚烯烃管道中六种金属元素(铁、钙、镁、锌、钛、铜)的测定 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2021-04-30 Implementation 2021-11-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A