1.API 5L/ASTM A106 GR B carbon Seamless Steel Pipes. 2.Standard: ASTMA511, A312, A269. 3. ... --12mm OD:6mm-830mm. API 5L/ASTM A106 GR B carbon Seamless Steel Pipes.Description of product:Various sizes are avaialble ... more Material: ASTM A 179 A 53 A106, API5L Gr.B X60 X42, Q235B, Q345B, Q345C, 20#, 12Cr1MoV, 15CrMo, TP304, ... /10CrMo910480∼630≥280≥20/ API 5L/ASTM A106 GR B carbon Seamless Steel Pipes