常用钢管规格DN对照表
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DN15-ф18mm，DN20-ф25mm DN25-ф32mm，DN32-ф38mm
DN40-ф45mm，DN50-ф57mm DN65-ф73mm，DN80-ф89mm
DN100-ф108mm，DN125-ф133mm DN150-ф159mm，DN200-ф219mm
DN250-ф273mm，DN300-ф325mm DN350-ф377mm，DN400-ф426mm
DN450-ф480mm，DN500-ф530mm
2.53
3.54
4.55
5.56
6.57
7.5 ()
/
32 1.822.152.462.76 3.05 3.33 3.59 3.85 4.09 4.32 4.53 38 2.192.592.983.35 3.72 4.07 4.41 4.74 5.05 5.35 5.64 42 2.442.893.353.75 4.16 4.56 4.95 5.33 5.69 6.04 6.38 45 2.623.113.584.04 4.49 4.93 5.36 5.77 6.17 6.56 6.94 50 2.933.484.014.54 5.05 5.55 6.04 6.51 6.977.427.86 54- 3.774.364.93 5.49 6.04 6.587.107.618.118.60 57- 4.004.625.23 5.83 6.41 6.997.558.108.639.16 60- 4.224.885.52 6.16 6.787.397.998.589.159.71 63.5- 4.485.185.87 6.557.217.878.519.149.7510.36
68- 4.815.576.317.057.778.489.179.8610.5311.19 70- 4.965.746.517.278.018.759.4710.1810.8811.56 73- 5.186.006.817.608.389.169.9110.6611.3912.11 76- 5.406.267.107.938.759.5610.3611.1411.9112.67 83-- 6.867.798.719.6210.5111.3912.2613.1213.96 89--7.388.389.3810.3611.3312.2813.2214.1615.07 95--7.908.9810.0411.1012.1413.1714.1915.1916.18 102--8.509.6710.8211.9613.0914.2115.3116.4017.48 108---10.2611.4912.7013.9015.0916.2717.4418.59 114---10.8512.1513.4414.7215.9817.2318.4719.70
2.53
3.54
4.55
5.56
6.57
7.5 ()
/
121---11.5412.9314.3015.6717.0218.3519.6820.99 127---12.1313.5915.0416.4817.9019.3220.7222.10 133---12.7314.2615.7817.2918.7920.2821.7523.21 140----15.0416.6518.2419.8321.4022.9624.51 146----15.7017.3919.0620.7222.3624.0025.62 152----16.3718.1319.8721.6023.3225.0326.73 159----17.1518.9920.8222.6424.4526.2428.02
168-----20.1022.0423.9725.8927.7929.69 180-----21.5923.7025.7527.7029.8731.91 194-----23.3125.6027.8230.0032.2834.50 203-------29.1431.5033.8336.16 219-------31.5234.0636.6039.12 245--------38.2341.0943.85 273--------42.6445.9249.10 299----------53.91 325----------58.74