... - 1020mm2. Thickness: 0.2mm -60mm3. Steel Grade: Q195-Q345 Standard: GB/T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTMSCH804 ... ")2) Wall thickness: 2.5 - 8.18mm3) Standard: ASTM, GB/T3091-2001 Out DiameterWall ThicknessLengthInchmm mm meter1/221.3mm 0 ... My company has many production lines, production GB/T12770-2002, BS1387-1985, ASTM A-53, GB/T3091-2001 other standard pipe, complete ...