강관 배관용 강관

 

 

호칭 외경 외경의 허용오차 두께(m/m) 허용두께차 소켓을 포함하지 않은 중량 A B m/m 테이퍼나사관 기타관 KS JIS kg/m 10 ⅜ 17.3 ±0.5mm 2.35 2.3 + 규정하지않음 - 12.5% 0.866 15 ½ 21.7 ±0.5mm 2.65 2.8 1.25 20 ¾ 27.2 ±0.5mm 2.65 2.8 1.60 25 1 34.0 ±0.5mm 3.25 3.2 2.45 32 1¼ 42.7 ±0.5mm 3.25 3.5 3.16 40 1½ 48.6 ±0.5mm 3.25 3.5 3.63 50 2 60.5 ±0.5mm ±1% 3.65 3.8 5.12 65 2½ 76.3 ±0.7mm ±1% 3.65 4.2 6.34 80 3 89.1 ±0.8mm ±1% 4.05 4.2 8.49 90 3½ 101.6 ±0.8mm ±1% 4.05 4.2 9.74 100 4 114.3 ±0.8mm ±1% 4.50 4.5 12.2 125 5 139.8 ±0.8mm ±1% 4.85 4.5 16.1 150 6 165.2 ±0.8mm ±1% 4.85 5.0 19.2 200 8 216.3 ±1.0mm ±1% 5.85 5.8 30.4 250 10 267.4 ±1.3mm ±1% 6.40 6.6 41.2 300 12 318.5 ±1.5mm ±1% 7.00 6.9 53.8 350 14 355.6   ±1% 7.60 7.9 65.2 400 16 406.4   ±1% 7.90 7.9 77.6 450 18 457.2   ±1% 7.90 7.9 87.5 500 20 508.0   ±1% 7.90 7.9 97.4 550 22 558.5   ±1% 7.90   107 600 24 609.6   ±1% 7.90   117