... 106B, ASTM A53, X42Quality:Manufactured to meet ISO9001, ASTM, API, SAE, DIN, BS, GB and SY requirementsApplication: Widely used ... 75-11.75The above is our popular size90*901.5—5.75350*3507.75-11.75We also can custom ... for ur requirement.100*1001.2—5.75400*4007.75-11.75Black pipe are usually with anti-rust our ... GB/T3094,TSAM A500,EN10210,GB/T9711.1-1997, API Material:Q195, Q215,Q235,Q345,ST37-2,ST52-3 ...