... /C Commodity:galvanized mild steel tube Standard: BS, GB, ASTMStandard: BS 1387, GB 5310-1995, GB 3087-1999, ...Grade: 10#-45#, Mn-V alloy ... 400g/m2Outer diameter : 21.3-219mmWall thickness : 0.4-13mm Material: Q195,Q215,Q235,Q345, GR.A, GR.B, API J55 ... as the customers' requirement.Standards: ASTM-A53, BS1378-1985, GB/T3091-2001, GB/T3087, Customized Packing details : in bundles or in loose ...