GB/T 21832.2-2018奥氏体-铁素体型双相不锈钢焊接钢管第2部分:流体输送用管国家标准
英文:Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2:Pipes for fluid transport GB/T 21832.2-201...
英文:Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2:Pipes for fluid transport GB/T 21832.2-201...