ASTM A252 Piling welding pipe Outside diameter:219mm-3600mm Wall thickness:6-30mm Length:5.8-23M API 5L Pipeline Welding pipe A PI 5L PSL1 /ASTM A252/A53 Pipeline Spiral Welding steel pipe1) Material: Q235, Q345(16Mn), L175-485, SS400, 16Mn, L290-L360, X42-X60 .2)Length:5.8-6M,11.8-12-18M, 20M-23M and according to the customers requirements.3) Outside Diameter: 219-3600mm Wall thickness: 6-30mm 4 ...