... -304.8mm 4.Standard: GB, BS, ASTM A53-2007, API5L Galvanized Welded Steel Pipe1. Out Diameter: 25.4mm - 304.8mm2. Thickness: 2 ... . Steel Grade: Q195-Q345 Standard: GB/T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTMSCH804. Surface Finish: Galvanized, electro galvanized, ... Elongation), Technical Properties ( Bending Test, Blow Test, Impact Test), Exterior Galvanized Welded Steel Pipe