Home / Standards / GB/T 9251-2011 GB/T 9251-2011 Abolished Methods for hydrostatic test of gas cylinders 气瓶水压试验方法 Standard Type GBT ICS 23.020.30 CCS J74 Status 废止 Issue Date 2011-12-30 Implementation 2012-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委