Home / Standards / GB/T 28295-2012 GB/T 28295-2012 Abolished General specification of superalloy tubes 高温合金管材通用技术条件 Standard Type GBT ICS 77.140.99 CCS H57 Status 废止 Issue Date 2012-05-11 Implementation 2013-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A