Home / Standards / GB/T 27891-2011 GB/T 27891-2011 Active Carbon steel press-fittings 碳钢卡压式管件 Standard Type GBT ICS 47.020.30 CCS U55 Status 现行 Issue Date 2011-12-30 Implementation 2012-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委