Home / Standards / GB/T 1301-2008 GB/T 1301-2008 Abolished Hollow drill steels for rock drilling 凿岩钎杆用中空钢 Standard Type GBT ICS 77.140.60 CCS H44 Status 废止 Issue Date 2008-08-19 Implementation 2009-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A