... , Q345, St33, St37-2, SS330, SS400, ASTM A 106B, ASTM A53, X42Quality:Manufactured to meet ISO9001, ASTM, API, SAE, DIN, BS, GB and ... requirement.100*1001.2—5.75400*4007.75-11.75Black pipe are usually with anti-rust our black painting on surface ... panting or as per the client's requirment, beveled edges, plain etc. Process threading, coupling and plastic caps protected