We are a professional manufacturer of spiral weled steel pipes, we can supply u high quality goods with best price. 1.Out Diameter: 219.1 mm – 2540mm (8"-100") 2.Wall Thickness: 3.2mm - 25.4mm 3.Length: 6 – 22 m 4.Steel Grade: Q235A, Q235B, Q345API 5L: GR A, GR B, X42,X46, X56, X60,X65,X70, X80ASTM A252 GR 1, GR 2, GR 3ASTM A53: GR A, GR B, GR C, GR DBS 4360: Grade 43, Grade 50EN: S275, S275JR, ...