Guobang Steel has achieved ISO9001, ISO 14001 and ISO45001 certificates, GOT, PED 97/23/EU and AD2000 merkblatt W0 certificate, CCS、DNV.GL、BV、ABS、LR Classification Society Factory Approval，serialized and assorted development pattern of Stainless Steel Seamless Pipes, with the materials involving Austenitic steel, Super austenitic steel, Duplex, Super duplex, Nickel alloy, and etc