... BS E...Grade: A53-A369, ST35-ST52, Q195-Q345Grade: A53(A,B), St37, St52, St42, Q235, Q345, ...Thickness: 0.5 ... Not: Non-alloyBrand Name: YUAN TAIType: WeldedWelded Line Type: LongitudinalWelding Line Type: ERWThickness: 0.5-2.5mmTechnique: WeldedModel ... , according to customers' requirementsInternational Standard ISO 9001-2008StandardASTM A 53 / BS 1387-1985MaterialQ195/Q215/Q235/Q345Product Category : ...