Home / Standards / GB/T 13447-2008 GB/T 13447-2008 Active Steel blank for seamless gas cylinder 无缝气瓶用钢坯 Standard Type GBT ICS 77.140.60 CCS H43 Status 现行 Issue Date 2008-08-26 Implementation 2009-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A