3PE welded steel piep Technique: ERW WT: 0.4-10mm OD:25.4-304.8mm Standard: GB, BS, ASTM A53-2007, API5L 3PE Welded Steel Pipe1. Out Diameter: 25.4mm - 304.8mm2. Thickness: 2.5mm -26mm3. Steel Grade: Q195-Q345 Standard: GB/T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTMSCH804. Surface Finish: Galvanized, electro galvanized, black1)Weld form: Longitudinal 2)Technology: ERW 3) ...