... . Steel Grade: Q195-Q345 Standard: GB/T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTMSCH804. Surface Finish: Galvanized, electro ... company has many production lines, production GB/T12770-2002, BS1387-1985, ASTM A-53, GB/T3091-2001 other standard pipe, complete ...