Home / Standards / GB/T 3634.2-2011 GB/T 3634.2-2011 Abolished Hydrogen - Part 2: Pure hydrogen,high pure hydrogen and ultra-pure hydrogen 氢气 第2部分：纯氢、高纯氢和超纯氢 Standard Type GBT ICS 71.100.20 CCS G86 Status 废止 Issue Date 2011-12-30 Implementation 2012-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit 中国石油和化学工业联合会