Home / Standards / GB/T 11837-2009 GB/T 11837-2009 Active Test methods of the concrete compressive strength of concrete pipes for water 混凝土管用混凝土抗压强度试验方法 Standard Type GBT ICS 91.100.30 CCS Q04 Status 现行 Issue Date 2009-03-09 Implementation 2009-11-05 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A