... Pipe A106/A53/API 5L 1.Material Gr A, Gr B,X42-X80 ,ST52/35.8 etc 2.Standard: ASTM, DIN ... Pipe A106/A53/API 5 L1. Material: Gr A, Gr B, X42, X52, X60,X80,10#,20#,35#,45#,ST35.4 ... . Supply Carbon Steel Pipe(A106/A53/API 5L) ex China Manufacturer