... T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTMSCH804. Surface Finish: Galvanized, electro galvanized, ... thickness: 3.2 - 19.1mm3) Standard: API SPEC 5L, ASTM, BS, GB/T9711.1-1997 Low pressure liquid ... lines, production GB/T12770-2002, BS1387-1985, ASTM A-53, GB/T3091-2001 other standard pipe, ... rolled/cold rolled coils as per API 5L, Astm 106, Astm A53, and Bs1387/85 standards at the ...