규격(mm) 내경(I.D)(m/m) 외경(O.D)(m/m) 두 께 본당길이 100 100 ±1.5 116 ± 1.5 15 ± 0.5 4m or 6m 125 125 ± 2.0 145 ± 2.0 16 ± 0.5 4m or 6m 150 150 ± 2.0 173 ± 2.0 18 ± 1.0 4m or 6m 200 200 ± 2.5 234 ± 2.5 25 ± 1.0 4m or 6m 250 250 ± 2.5 285 ± 2.5 27 ± 1.0 4m or 6m 300 300 ± 3.0 340 ± 3.0 30 ± 1.0 4m or 6m 350 350 ± 3.0 390 ± 3.0 20 ± 1.2 4m or 6m 400 400 ± 4.0 450 ± 4.0 38 ± 1.0 4m or 6m 450 450 ± 4.0 516 ± 4..