「管径知识及单位重量」.doc

管道及单位换算4分管12.7mm1/2英寸DN156分管19.05mm3/4英寸DN201寸管25.4mm1英寸DN251.2寸管DN321.5寸管DN40工程管径对照表（常用）1 英寸=25.4毫米 =8英分 1/2 是 四分(4英分) DN15 3/4 是 六分(6英分) DN20 2分管 DN84分管 DN15 6分管 DN20 1 DN25 1.2 DN32 1.5 DN40 2 DN50 2.5 DN65 3 DN80 4 DN100 5 DN125 6 DN150 8 DN200 10 DN250 12 DN300 GB/T50106-2001 2.4管径 2.4.1管径应以mm为单位。 2.4.2管径的表达方式应符合下列规定： 1 水煤气输送钢管（镀锌或非镀锌）、铸铁管等管材，管径宜以公称直径DN表示； 2 无缝钢管、焊接钢管（直缝或螺旋缝）、铜管、不锈钢管等管材，管径宜以外径壁厚表示； 3 钢筋混凝土（或混凝土）管、陶土管、耐酸陶瓷管、缸瓦管等管材，管径宜以内径d表示； 4 塑料管材，管径宜按产品标准的方法表示； 5 当设计均用公称直径DN表示管径时，应有公称直径DN与相应产品规格对照表。 建筑排水用硬聚氯乙烯管材规格用de（公称外径）e（公称壁厚）表示（GB 5836.1-92） 给水用聚丙烯（PP）管材规格用dee表示（公称外径壁厚）.关于DN与De的区别： 1、DN是指管道的公称直径，注意：这既不是外径也不是内径；应该与管道工程发展初期与英制单位有关；通常用来描述镀锌钢管，它与英制单位的对应关系如下： 4分管：4/8英寸：DN15； 6分管：6/8英寸：DN20； 1寸管：1英寸：DN25； 寸二管：1又1/4英寸：DN32； 寸半管：1又1/2英寸：DN40； 两寸管：2英寸：DN50；两寸半管：2 1/2英寸：DN63三寸管：3英寸：DN80（很多地方也标为DN75）； 四寸管：4英寸：DN100； De主要是指管道外径，一般采用De标注的，均需要标注成外径X壁厚的形式； 主要用于描述：无缝钢管、PVC等塑料管道、和其他需要明确壁厚的管材。 拿镀锌焊接钢管为例，用DN、De两种标注方法如下： DN20 De25X2.5mm DN25 De32X3mm DN32 De40X4mm DN40 De50X4mm 等等。我们习惯于使用DN来标注焊接钢管，在不涉及到壁厚的情况下很少使用De来标注管道； 但是标注塑料管就又是另外一回事了；还是跟行业习惯有关，实际施工过程中我们简略称呼的20、25、32等管道均是指De，而不是指DN，这里相差一个规格呢。不搞清楚很容易在采购、施工过程中造成损失。 两种管道材料的连接方式不外乎：丝扣连接及法兰连接。其他连接方式就用得很少了。 镀锌钢管、PPR管均能采用以上两种连接，只是小于50的管道用丝扣较方便，大于50的用法兰比较可靠。 注意：如果是两种不同材质的金属管道相连，要考虑是否会产生原电池反应，否则会加速活跃金属材料管道的腐蚀速度，最好要用法兰连接，并用橡胶垫片类的绝缘材质将两种金属分隔开，包括螺栓都要用垫片分隔，避免接触。记住英制长度单位的进制：1英寸8英分 （所以3英分写成3/8英寸，不是0.3英寸）1英尺12英寸 1码3英尺1英里1760码4英分就是半英寸，12.7mm （这就是大口径狙击枪的子弹头的直径）8英分就是一英寸，25.4mm6英分是多少，自己可以算出来了。DND表示“直径”，N表示“内径”。管材:每米重量(公斤)=0.02466壁厚(外径-壁厚)角钢:每米重量(公斤)=0.00785(边宽+边厚-边厚)边厚圆钢:每米重量(公斤)=0.00617直径直径(注:螺纹钢和圆钢相同)扁钢:每米重量(公斤)=0.00785厚度边宽板材:每米重量(公斤)=0.785厚度有色金属的板材的计算公式为：每平方米重量（公斤）=比重*厚度各种有色金属的比重如下：紫铜板8.9 黄铜板8.5 锌板7.2 铅板11.37 铝板2.8铝花纹板：每平方米重量（公斤）=2.96*厚度紫铜管：每米重量（公斤）=0.02796*壁厚*（外径-壁厚）黄铜管：每米重量（公斤）=0.02670*壁厚*（外径-壁厚九、无缝钢管单位重量表热轧无缝钢管每米重量表外径(毫米)壁 厚（毫米）2.533.544.555.566.577.5理 论 重 量 （公斤/米）321.822.152.462.763.053.333.593.854.094.324.53382.192.592.983.353.724.074.414.745.055.355.64422.442.893.353.754.164.564.955.335.696.046.38452.623.113.584.044.494.935.365.776.176.566.94502.933.484.014.545.055.556.046.516.977.427.8654-3.774.364.935.496.046.587.107.618.118.6057-4.004.625.235.836.416.997.558.108.639.1660-4.224.885.526.166.787.397.998.589.159.7163.5-4.485.185.876.557.217.878.519.149.7510.3668-4.815.576.317.057.778.489.179.8610.5311.1970-4.965.746.517.278.018.759.4710.1810.8811.5673-5.186.006.817.608.389.169.9110.6611.3912.1176-5.406.267.107.938.759.5610.3611.1411.9112.6783-6.867.798.719.6210.5111.3912.2613.1213.9689-7.388.389.3810.3611.3312.2813.2214.1615.0795-7.908.9810.0411.1012.1413.1714.1915.1916.18102-8.509.6710.8211.9613.0914.2115.3116.4017.48108-10.2611.4912.7013.9015.0916.2717.4418.59114-10.8512.1513.4414.7215.9817.2318.4719.70外径(毫米)壁 厚（毫米）2.533.544.555.566.577.5理 论 重 量 （公斤/米）121-11.5412.9314.3015.6717.0218.3519.6820.99127-12.1313.5915.0416.4817.9019.3220.7222.10133-12.7314.2615.7817.2918.7920.2821.7523.21140-15.0416.6518.2419.8321.4022.9624.51146-15.7017.3919.0620.7222.3624.0025.62152-16.3718.1319.8721.6023.3225.0326.73159-17.1518.9920.8222.6424.4526.2428.02168-20.1022.0423.9725.8927.7929.69180-21.5923.7025.7527.7029.8731.91194-23.3125.6027.8230.0032.2834.50203-29.1431.5033.8336.16219-31.5234.0636.6039.12245-38.2341.0943.85273-42.6445.9249.10299-53.91325-58.74351-377-402-426-459-(465)-480-外径(毫米)壁 厚（毫米）88.599.5101112131415理 论 重 量 （公斤/米）324.74-385.92-426.717.027.327.607.88-457.307.657.998.328.63-508.298.709.109.499.86-549.089.549.9910.4310.8511.67-579.6710.1710.6511.1311.5912.4813.3214.11-6010.2610.8011.3211.8312.3313.2914.2115.0715.88-63.510.9511.5312.1012.6513.1914.2415.2416.1917.09-6811.8412.4713.1013.7114.3015.4616.5717.6318.6419.617012.2312.8913.5414.1714.8016.0117.1718.2719.3320.357312.8213.5214.2114.8815.5416.8218.0519.2420.3721.467613.4214.1514.8715.5816.2817.6318.9420.2021.4122.578314.8015.6216.4217.2218.0019.5321.0222.4423.8225.158915.9816.8717.7618.6319.4821.1622.7924.3725.8927.379517.1618.1319.0920.0320.9622.7924.5626.2927.9729.59外径(毫米)壁 厚（毫米）88.599.5101112131415理 论 重 量 （公斤/米）10218.5519.6020.6421.6722.6924.6926.5328.6330.3832.1810819.7320.8621.9723.0824.1726.3128.4130.4632.4534.4011420.9122.1223.3124.4825.6527.9430.1932.3834.5336.6212122.2923.5824.8626.1227.3729.8432.2634.6236.9439.2112723.4824.8426.1927.5328.8531.4734.0336.5539.0141.4313324.6626.1027.5228.9330.3333.1035.8138.4741.0943.6514026.0427.5729.0830.5732.0634.9937.8840.7243.5046.2414627.2328.8230.4131.9833.5436.6239.6642.6445.5748.4615228.4130.0831.7433.3935.0238.2541.4344.5647.6550.6815929.7931.5533.2935.0336.7540.1543.5046.8150.0653.2716831.5733.4335.2937.1338.9742.5946.1749.6953.1756.6018033.9335.9537.9539.9541.9245.8549.7253.5457.3161.0419436.7038.8941.0643.2345.3849.6453.8658.0362.1566.2220338.4740.7743.0545.3347.5952.0856.5260.9165.9469.5421941.6344.1246.6149.0851.5456.4361.2666.0470.7875.4624546.7649.5652.3855.1757.9563.4868.9574.3879.7683.0827352.2855.4558.6061.7364.8671.0777.2483.3689.4295.44外径(毫米)壁 厚（毫米）88.599.5101112131415理 论 重 量 （公斤/米）29957.4160.8964.3767.8371.2778.1384.9391.6998.40105.0632562.5466.3570.1473.9277.6885.1892.63100.03107.38114.6835167.6771.8075.9180.0184.1092.23100.32108.36116.35124.29377-81.6886.1090.5199.29108.02117.00125.33133.91402-87.2191.9596.67106.06115.41124.71133.94143.15426-92.5597.57102.59112.58122.52132.41142.25152.04450-97.87103.20108.50119.08130.61140.09150.52160.90(465)-101.10116.48112.20123.15134.05144.90155.70166.46480-104.52110.22115.90127.22139.49149.71160.88172.00500-108.96114.91120.83132.65145.41156.12167.79179.40530-115.62121.94128.83140.78154.29165.74178.14190.50(550)-120.07126.62133.10146.21159.20172.15185.05197.90560-122.28128.97135.63148.92163.16175.36188.50201.60600-131.17138.34145.50159.78175.00188.18202.31216.39630-137.81145.36152.89167.91183.88197.80212.67227.49外径(毫米)壁 厚（毫米）161718192022(24)25(26)28理 论 重 量 （公斤/米）32-38-42-45-50-54-57-60-63.5-6820.52-7021.31-7322.4923.4824.4125.30-7623.6824.7425.7526.71-8326.4427.6728.8529.99-8928.8030.1931.5232.8034.0336.3538.47-9531.1732.7034.1835.6136.9939.6142.02-外径(毫米)壁 厚（毫米）161718192022(24)25(26)28理 论 重 量 （公斤/米）10233.9335.6437.2938.8940.4443.4046.17-10836.3038.1539.9541.7043.4046.6649.7251.1752.5855.2411438.6740.6742.6244.5146.3649.9153.2754.8756.4359.3812141.4343.6045.7247.7949.8253.7157.4159.1960.9164.2212743.8046.1248.3950.6152.7856.9760.9662.8964.7668.3613346.1748.6351.0553.4255.7360.2264.5166.5968.6172.5014048.9351.5754.1656.7059.1964.0268.6670.9073.1077.3414651.3054.0856.8259.5162.1567.2772.2174.6076.9481.4815253.6656.6059.4862.3265.1170.5975.7678.3080.7985.6215956.4359.5362.5965.6068.5674.3379.9082.6285.2890.4616859.9863.3166.5969.8273.0079.2185.2388.1691.0596.6718064.7168.3471.9175.4478.9285.7292.3395.5698.74104.9619470.2474.2178.1382.0085.2893.32100.62104.19107.72114.6320373.7877.9782.1286.2190.2698.20105.94109.74113.49120.8321980.1084.6989.2393.7198.15106.88115.42119.61123.75131.8924590.3695.59100.77105.90110.98120.99130.80135.64140.42149.84273101.41107.33113.20119.02124.79136.18147.38152.90158.38169.18外径(毫米)壁 厚（毫米）161718192022(24)25(26)28理 论 重 量 （公斤/米）299111.67118.23124.74131.20137.61150.29162.77168.93175.05187.13325121.93129.12136.28143.38150.44164.39178.15184.96191.72205.09351132.19140.03147.82155.56163.26178.50193.54200.99208.39223.04377142.44150.93159.36167.75176.08192.61208.93217.02225.06240.99402152.30161.40170.45179.45188.40206.16223.72232.42241.08258.24426161.78171.47181.11190.71200.25219.19237.93247.23256.48274.83450171.24181.52191.76201.94212.08232.20252.12262.01271.85291.38(465)177.16187.81198.41208.97219.47240.34261.00271.26281.47301.74480183.08194.10205.07216.00226.87248.47269.88280.51291.09312.10500190.97202.48213.95225.37236.74259.32281.72292.84303.91325.91530202.80215.06227.27239.42251.53275.60299.47317.50323.14346.62(550)210.70223.44236.14248.80261.40286.45311.31323.66335.97360.43560214.64227.64240.58253.48266.33291.88317.23-600230.42244.40258.34272.22286.06313.58340.90-630242.26256.98271.66286.28300.85329.85358.66-外径(毫米)壁 厚（毫米）3032(34)(35)36(38)40(42)(45)理 论 重 量 （公斤/米）12771.76-13376.2079.71-14081.3885.2388.8890.6392.33-14685.8289.9793.9195.8197.66-15290.2694.7098.94100.99102.99-15995.44100.22104.81107.03109.20-168102.10107.33112.36114.80117.19121.83126.27130.51136.50180110.98116.80122.42125.16127.85133.07138.10142.94149.82194121.33127.85134.16137.24140.27146.19151.91157.44165.36203127.99134.94141.70145.00148.26154.62160.78166.75175.33219139.83147.57155.12158.82162.47169.62176.58183.33193.10245159.07168.09176.92181.26185.55193.99202.22210.26221.95273179.78190.19200.40205.43210.41220.23229.85239.27253.03外径(毫米)壁 厚（毫米）3032(34)(35)36(38)40(42)(45)理 论 重 量 （公斤/米）299199.02210.71222.20227.87233.50244.59255.49266.20281.88325218.25231.23244.00250.31256.53268.94281.14293.13310.73351237.49251.74265.80272.76279.66293.32306.76320.06339.59377256.73272.26287.61295.20302.77317.69332.44346.99368.44402275.21291.18308.55316.76324.92341.10357.08372.86396.16426292.98310.93328.69337.49346.27363.61380.77397.74422.82450310.72329.84348.79358.19367.53386.08404.42422.56449.43(465)321.81341.69361.37371.13380.85400.13419.22438.11466.07480332.91353.52373.94384.08394.17414.19436.01453.64482.72500347.71369.30390.71401.34411.92432.93453.74474.35504.91530369.9092.92415.87427.23438.55461.04483.34505.42538.20(550)384.70406.76432.64444.30456.31479.79503.06526.15560.40外径(毫米)壁 厚（毫米）(48)50566063(65)7075理 论 重 量 （公斤/米）203183.47188.65-219202.41208.38-245233.25240.44-273266.40274.96-299297.10307.02335.57353.62366.64375.08395.30414.29325327.90339.10371.49392.09407.04416.75440.34462.28351358.68371.16407.40430.59447.43458.43485.24510.46377389.45403.22442.30469.06484.82500.14529.98558.55402419.02434.01477.81506.02526.66540.17573.10604.79426447.46463.64510.97541.57560.47578.68614.56649.21450475.84493.20544.10577.04601.24617.12655.96693.56(465)493.59511.70564.83599.24624.54641.16681.84721.31480511.35530.19585.53621.43632.31665.20707.74749.05500535.02554.85613.15651.02678.91697.26742.27786.04530570.53591.84654.58695.41725.52745.35794.05841.52(550)594.21616.50682.19725.00756.59777.41828.58878.51注：1、括号内的尺寸不推荐使用。2、钢管长度：312.5米。冷拔（轧）无缝钢管每米重量表（理论重量）外径(毫米)壁 厚（毫米）0.250.300.400.500.600.801.01.21.4理 论 重 量 （公斤/米）50.02920.03480.04540.0550.0650.0830.0990.1120.12460.03540.04210.0550.0680.0800.1030.1230.1420.15970.04160.04960.0650.0800.0950.1220.1480.1720.19380.04770.0570.0750.0920.1100.1420.1730.2020.22790.0540.0640.0850.1050.1250.1620.1970.2310.262100.0600.0720.0950.1170.1390.1820.2220.2610.296110.0660.0790.1050.1290.1540.2010.2470.2900.331120.0720.0870.1150.1420.1690.2210.2710.3200.365(13)0.0790.0940.1240.1540.1840.2410.2960.3490.400140.0850.1010.1340.1660.1990.2600.3210.3790.434(15)0.0910.1090.1440.1790.2140.2800.3450.4090.468160.0970.1160.1540.1910.2280.3000.3700.4380.503(17)0.1030.1240.1640.2030.2440.3200.3950.4680.537180.1090.1310.1740.2160.2580.3400.4190.4970.572(19)0.1150.1380.1830.2280.2740.3590.4440.5270.606200.1220.1460.1930.2400.2880.3790.4690.5560.642外径(毫米)壁 厚（毫米）0.250.300.400.500.600.801.01.21.4理 论 重 量 （公斤/米）(21)-0.2030.2530.3030.3990.4930.5860.67522-0.2120.2650.3180.4190.5180.6160.710(23)-0.2220.2770.3330.4380.5430.6450.745(24)-0.2360.2900.3470.4580.5670.6740.77925-0.2420.3020.3630.4780.5920.7030.813(27)-0.2620.3270.3920.5160.6410.7620.88228-0.2720.3400.4060.5360.6660.7920.91629-0.2820.3520.4180.5530.6910.8230.95130-0.2920.3640.4360.5760.7150.8510.98632-0.3110.3890.4660.6150.7650.9101.0534-0.3310.4130.4960.6550.8140.9681.12(35)-0.3410.4260.5100.6750.8380.9981.1636-0.3500.4380.5250.6950.8631.031.1938-0.3700.4640.5550.7340.9121.091.2640-0.3900.4940.5850.7740.9621.151.3342-1.01-1.211.4144.5-1.07-1.281.48外径(毫米)壁 厚（毫米）0.250.300.400.500.600.801.01.21.4理 论 重 量 （公斤/米）45-1.091.301.5148-1.161.381.6150-1.211.441.68(51)-1.231.471.7153-1.281.531.78(54)-1.311.591.8256-1.361.621.89(57)-1.381.651.9260-1.461.742.0263-1.531.832.1365-1.581.892.20(68)-1.651.982.3070-1.702.032.37(73)-1.782.122.4775-1.822.182.54外径(毫米)壁 厚（毫米）1.51.61.82.02.22.52.83.03.2理 论 重 量 （公斤/米）50.1290.134-60.1660.1740.1860.197-70.2030.2130.2300.247