Home / Standards / GB/T 13476-2009 GB/T 13476-2009 Abolished Pretensioned spun concrete piles 先张法预应力混凝土管桩 Standard Type GBT ICS 91.100.30 CCS Q14 Status 废止 Issue Date 2009-03-25 Implementation 2010-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A