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HOME > 제품소개 > 연료가스 배관용 강관 Nominal Size Outside Diameter Tolerance of Outside Diameter Thickness Tolerance of Wall Thickness Weight A B mm - mm - kg/m 15 20 25 32 40 50 65 80 90 100 125 150 200 250 300 350 400 450 500 550 600 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 6 8 10 12 14 16 18 20 22 24 21.7 27.2 34.0 42.7 48.6 60.5 76.3 89.1 101.6 114.3 139.8 165.2 216.3 267.4 318.5 355.6 406.4 457.2 508.0 558.8 609.6 ±0.5mm ±0.5mm ±0.5mm ±0.5mm ±0.5mm ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% ±1% 2.65 2.65 3.25 3.25 3.25 3.65 3.65 4.05 4.05 4.5 4.85 4.85 5.85 6.40 7.0 7.60 7.9 7.9 7.9 7.9 7.9 +Not specified -12.5% 1.25 1.60 2.45 3.16 3.63 5.12 6.54 8.49 9.74 12.2 16.1 19.2 30.4 41.2 53.8 65.2 77.6 87.5 97.4 107.3 117.2