Home / Standards / GB/T 21832.2-2018 GB/T 21832.2-2018 Active Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2:Pipes for fluid transport 奥氏体-铁素体型双相不锈钢焊接钢管 第2部分:流体输送用管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2018-05-14 Implementation 2019-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A