... and machining Standard: GB/T3091, GB/T9711, ASTM A53, A500, API 5L, 5CT, BS1387(Galvanized) Steel Grade: Q195-Q235, B, ... Size Range: OD 21.3mm-630mm,thickness 1.8mm-20mm Specification Table for API 5L Standard O.D.W/T(mm ... √√√√√√√ 114.3√√√√√√√√ 141.3√√√√√√√√√ 168.3√√√√√√√√√√ 177.8√√√√√√√√√√√ 193.7√√√√√√√√√√√ 219.1 √√√√√√√√√√√√ 273.1 √√√√√√√√√√√ 323.9 √√√√√√√√√√ 355.6 √√√√√√√√√√√ 406.4 √√√√√√√√√√√ 457.2 ...