镀锌钢管理论重量与尺寸换算表完整.pdf

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1、镀锌钢管理论重量与尺寸换算镀锌钢管理论重量与尺寸换算表表(可以直接使用，可编辑 实用优秀文档，欢迎下载）镀锌钢管理论重量表镀锌钢管理论重量表一、国内通用型号中外尺寸对照一、国内通用型号中外尺寸对照规格英寸1/23/41管内径DN15DN20DN2521.326.933.742.448.360.376.188.92.82.83.23.53.53.8442.452.452.83.063.063.3253.5外径壁厚最小壁厚6 米焊管米重1.281.662.413.363.875.297.118.38根重7.689.9614.4620.1623.2231.7442.6650.286 米镀锌管米重1.

2、3571.762.5543.564.15.6077.5368.8811.53根重8.1410.5615.3221.3624.633.6445.2153.2869.181 又 1/4DN321 又 1/2DN402DN502 又 1/2DN65345688DN80DN100114.34DN1251404.510.8865.2815.0490.2415.94298.65115.62216.72DN150168.34.5DN200219.16 焊管18.18109.0819.2731.53189.1836.12DN200219.16.5 镀锌管二、各种特殊壁厚、型号尺寸表二、各种特殊壁厚、型号尺寸表

3、外径英寸1/8”毫米.10.3单位10S壁厚毫米.1.24英寸.0.049公斤/米.0.28重量磅/英尺.0.191/8”1/8”1/4”1/4”1/4”3/8”3/8”3/8”1/2”1/2”1/2”1/2”1/2”1/2”3/4”3/4”3/4”3/4”3/4”3/4”1”10.310.313.713.713.717.117.117.121.321.321.321.321.321.326.726.726.726.726.726.733.4STD-40XS-8010SSTD-40XS-8010SSTD-40XS-805S10SSTD-40XS-80160XXS5S10SSTD-40XS-80

4、160XXS5S1.732.411.652.243.021.652.313.201.052.112.773.734.787.471.652.112.873.915.567.821.650.0680.0950.0650.0880.1190.0650.0910.1260.0420.0830.1090.1470.1880.2940.0650.0830.1130.1540.2190.3080.0650.370.480.500.640.810.640.851.110.531.011.281.631.972.571.031.291.702.222.933.681.310.250.320.340.430.5

5、50.430.570.750.360.680.861.101.331.730.690.871.141.491.972.480.881”1”1”1”1”1 1/4”1 1/4”1 1/4”1 1/4”1 1/4”1 1/4”1 1/2”1 1/2”1 1/2”1 1/2”1 1/2”1 1/2”2”2”2”2”33.433.433.433.433.442.242.242.242.242.242.248.348.348.348.348.348.360.360.360.360.310SSTD-40XS-80160XXS5S10SSTD-40XS-80160XXS5S10SSTD-40XS-80160

6、XXS5S10S2.773.384.556.359.091.652.773.564.856.359.701.652.773.685.087.1410.151.652.112.773.180.1090.1330.1790.2500.3580.0650.1090.1400.1910.2500.3820.0650.1090.1450.2000.2810.4000.0650.0830.1090.1252.122.533.274.285.511.672.723.434.515.677.851.923.144.095.477.329.652.413.063.974.521.421.702.182.883.

7、711.121.832.313.033.815.281.292.112.753.684.926.491.622.062.673.042”2”2”2”2 1/2”2 1/2”2 1/2”2 1/2”2 1/2”2 1/2”2 1/2”3”3”3”3”3”3”3”3”3”3”60.360.360.360.373.073.073.073.073.073.073.088.988.988.988.988.988.988.988.988.988.9STD-40XS-80160XXS5S10S30STD-40XS-80160XXS5S10SSTD-40XS-80160XXS3.915.548.7411.07

8、2.113.054.785.167.019.5314.022.112.773.053.183.583.965.497.6211.1315.240.1540.2180.3440.4360.0830.1200.1880.2030.2760.3750.5520.0830.1090.1200.1250.1410.1560.2160.3000.4380.6005.497.5611.2313.583.735.328.128.7211.5215.0820.604.565.956.526.797.618.3811.4115.4321.5627.963.695.087.559.132.513.575.465.8

9、67.7410.1413.843.074.004.384.565.125.637.6710.3714.4918.793 1/2”3 1/2”3 1/2”3 1/2”3 1/2”4”4”4”4”4”4”4”4”4”4”4”4”4”4”4”4”101.6101.6101.6101.6101.6114.3114.3114.3114.3114.3114.3114.3114.3114.3114.3114.3114.3114.3114.3114.3114.35S10S30STD-40XS-805S10SSTD-40XS-80120160XXS2.113.054.785.748.082.113.053.18

10、3.964.374.785.165.566.026.357.147.928.5611.1313.4917.120.0830.1200.1880.2260.3180.0830.1200.1250.1560.1720.1880.2030.2190.2370.2500.2810.3120.3370.4380.5310.6745.237.4911.5313.7118.835.908.468.8110.8911.9713.0414.0315.0616.2417.0819.0620.9922.5528.6133.8841.453.525.037.759.2112.653.975.685.927.328.0

11、58.769.4310.6210.9111.4812.8114.1115.1519.2322.7727.855”5”5”5”5”5”5”5”5”5”6”6”6”6”6”6”6”6”6”6”6”141.3141.3141.3141.3141.3141.3141.3141.3141.3141.3168.3168.3168.3168.3168.3168.3168.3168.3168.3168.3168.3STD-40XS-80120160XXSSTD-40XS-803.964.785.566.557.147.929.5312.7015.8819.054.374.785.165.566.357.117

12、.928.749.5310.9712.700.1560.1880.2190.2580.2810.3120.3750.5000.6250.7500.1720.1880.2030.2190.2500.2800.3120.3440.3750.4320.50013.5516.2618.8021.9923.8626.3231.2840.6949.6258.0117.8419.4720.9722.5425.6228.5531.6434.7437.6942.9949.239.1110.9312.6314.7816.0417.6921.0227.3433.3438.9811.9913.0914.0915.15

13、17.2219.1921.2623.3525.3328.8933.086”6”6”6”6”6”8”8”8”8”8”8”8”8”8”8”8”8”8”8”8”168.3168.3168.3168.3168.3168.3219.1219.1219.1219.1219.1219.1219.1219.1219.1219.1219.1219.1219.1219.1219.1120160XXS2030STD-4060XS-8010014.2715.8818.2619.0521.9522.234.785.165.566.357.047.928.188.749.5310.3111.1312.7014.2715.

14、0915.880.5620.6250.7190.7500.8640.8750.1880.2030.2190.2500.2770.3120.3220.3440.3750.4060.4380.5000.5620.5940.62554.7560.3068.2570.8580.0280.8725.5227.5029.5833.6537.1941.6642.9845.8049.7553.6257.6665.3072.8176.6980.3136.7940.5245.8647.6153.7754.3417.1518.4819.8822.6124.9928.0028.8830.7833.4336.0338.

15、7543.8848.9351.5354.028”8”8”8”8”8”10”10”10”10”10”10”10”10”10”10”10”10”10”10”10”219.1219.1219.1219.1219.1219.1273.0273.0273.0273.0273.0273.0273.0273.0273.0273.0273.0273.0273.0273.0273.0120140XXS1602030STD-40XS-608010018.2619.0520.6222.2323.0125.404.785.165.566.357.097.808.749.2711.1312.7014.2715.0915

16、.8818.2620.620.7190.7500.8120.8750.9061.0000.1880.2030.2190.2500.2790.3070.3440.3650.4380.5000.5620.5940.6250.7190.81291.3694.93101.95108.96112.40122.5631.9434.4337.0442.1846.9751.5357.3460.9072.6182.3591.9296.95101.71115.87129.6461.3963.7968.5173.2275.5982.3621.4623.1424.8928.3431.5634.6338.6640.92

17、48.7955.3461.8065.1568.3577.8687.1110”10”10”10”10”10”12”12”12”12”12”12”12”12”12”12”12”12”12”12”12”273.0273.0273.0273.0273.0273.0323.8323.8323.8323.8323.8323.8323.8323.8323.8323.8323.8323.8323.8323.8323.8120XXS-1401602030STD40XS608010021.4422.2323.8325.4028.5831.756.357.147.928.388.749.5310.3111.1312

18、.7014.2715.8817.4819.0520.6221.440.8440.8750.9381.0001.1251.2500.2500.2810.3120.3300.3440.3750.4060.4380.5000.5620.6250.6880.7500.8120.844134.35138.87147.91156.66174.01190.8150.2256.3262.3265.8568.6074.6180.5186.6998.42110.03121.81133.3814.62155.73161.4890.2893.3299.39105.22116.93128.2233.7537.8541.

19、8844.2346.1050.1354.1058.2566.1473.9481.8589.6397.18104.65108.5112”12”12”12”12”12”14”14”14”14”14”14”14”14”14”14”14”14”14”14”14”323.8323.8323.8323.8323.8323.8355.6355.6355.6355.6355.6355.6355.6355.6355.6355.6355.6355.6355.6355.6355.6XXS-1201401601020STD-3040XS608010012014023.8325.4026.9728.5831.7533.

20、326.357.928.749.5310.3111.1312.7014.2715.0919.0523.8325.4026.9727.7931.750.9381.0001.0621.1251.2501.3120.2500.3120.3440.3750.4060.4380.5000.5620.5940.7500.9381.0001.0621.0941.250178.07188.80199.42210.18230.98241.1055.2568.6075.5282.1688.6895.51108.48121.33128.00159.71196.94208.92220.78226.93256.1311

21、9.65126.87134.00141.23155.21162.0137.1346.150.7555.2159.5964.1872.9081.5386.01107.32132.34140.39148.36152.49172.1114”16”16”16”16”16”16”16”16”16”16”16”16”16”16”16”16”16”16”16”16”355.6406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.4406.41601020STD-30XS-40

22、608010012014035.716.357.147.928.749.5310.3111.1312.7014.2715.8816.6617.4819.0520.6221.4425.4026.1930.9631.7536.531.4060.2500.2810.3120.3440.3570.4060.4380.5000.5620.6250.6560.6880.7500.8120.8441.0001.0311.2191.2501.438284.5663.2871.0178.6286.5894.21101.72109.59124.55139.39154.48161.74169.35183.81198

23、.15205.60241.06248.05289.54296.31336.57191.2142.5247.7252.8358.1863.3168.3673.6483.6993.67103.80108.69113.80123.52133.15138.15161.98166.68194.56199.11226.1616”18”18”18”18”18”18”18”18”18”18”18”18”18”18”18”18”18”18”18”18”406.445745745745745745745745745745745745745745745745745745745745716020STD30XS4060

24、8010012014016040.497.928.749.5310.3111.1312.7014.2715.8817.4819.0523.8325.4026.9728.5829.3630.1831.7534.9339.6745.241.5940.3120.3440.3750.4060.4380.5000.5620.6250.6880.7500.9381.0001.0621.1251.1561.1881.2501.3751.5621.781369.0688.6097.59106.23114.72123.62140.56157.38174.50191.38207.82257.13273.08288

25、.91305.01312.76320.88336.33367.25412.40464.03247.9959.5465.5871.3877.0983.0794.45105.75117.25128.60139.65172.78183.50194.14204.96210.16215.62226.00246.78277.12311.8120”20”20”20”20”20”20”20”20”20”20”20”20”20”20”20”20”20”20”22”22”508508508508508508508508508508508508508508508508508508508559559STD-20XS-

26、30406080100120140160STD-208.749.5310.3111.1312.7014.2715.0915.8817.4819.0520.6225.4026.1930.1831.7532.5438.1044.4550.018.749.530.3440.3750.4060.4380.5000.5620.5940.6250.6880.7500.8121.0001.0311.1881.2501.2811.5001.7501.9690.3440.375108.70118.33127.82137.76156.70175.51185.28194.67213.59232.03250.3430

27、5.35314.33359.22376.66385.40445.97513.27570.54119.80130.4473.0479.5185.8992.57105.3117.94124.50130.81143.53155.92168.22205.18211.22241.38253.10258.97299.67344.90383.3880.587.6522”22”22”22”22”24”24”24”24”24”24”24”24”24”24”24”24”24”24”24”24”5595595595595596106106106106106106106106106106106106106106106

28、10XS-30STD-20XS3040608010012014012.7015.8817.4819.0520.628.749.5312.7014.2715.8817.4819.0520.6224.6125.4026.9730.1830.9638.8946.0252.370.5000.6250.6880.7500.8120.3440.3750.5000.5620.6250.6880.7500.8120.9691.0001.0621.1881.2191.5311.8122.062172.83214.84235.79256.23276.54130.90142.55188.96211.76233.02

29、258.00280.43302.73358.87369.89391.69435.90442.86553.26646.52727.45116.14144.37158.44172.18185.8387.9695.79126.98142.30157.93173.37188.44203.42241.15248.55263.20292.91297.59371.72434.44488.8226”26”26”26”28”28”28”28”30”30”32”32”34”34”36”36”38”38”40”40”42”66066066066071171171171176276281381386486491491

30、4965965101610161067STDXS-20STDXS-20STDXS-20STDXS-20STDXS-20STDXS-20STDXSSTDXSSTD9.5312.7017.4819.059.5312.7017.4819.059.5312.709.5312.709.5312.709.5312.709.5312.709.5312.709.530.3750.5000.6880.7500.3750.5000.6880.7500.3750.5000.3750.5000.3750.5000.3750.5000.3750.5000.3750.5000.375154.42204.78279.773

31、04.15166.52220.91301.98328.35178.63237.05190.74253.18202.84269.31214.71285.13226.82301.27238.93317.40251.04103.77137.61188.00204.38118.90148.44202.92220.64120.03159.29128.17170.13136.30180.97144.28191.60152.42202.44160.55213.28168.6942”44”44”46”46”48”48”52”52”56”56”60”60”64”64”68”72”76”80”1067111811

32、181168116812191219132113211422142215241524162616261727182919302032XSSTDXSSTDXSSTDXS12.709.5312.709.5312.709.5312.709.5312.709.5312.709.5312.709.5312.7012.7012.7012.7014.270.5000.3750.5000.3750.5000.3750.5000.3750.5000.3750.5000.3750.5000.3750.5000.5000.5000.5000.562333.54263.14349.67275.01365.49287.

33、12381.62311.33413.89335.31445.84359.52478.11383.74510.38542.33574.60606.55717.23224.13176.82234.92184.80245.59192.93256.43209.20278.12225.32299.59241.50321.27257.86342.96364.43386.11407.58481.95镀锌管相关资料镀锌管相关资料钢管重量计算公式钢管重量计算公式:(:(外径外径-壁厚壁厚)*)*壁厚壁厚*0.02466=kg/*0.02466=kg/米米(每米的重量每米的重量)规格公称内径（毫米）DN15DN2

34、0DN25DN32DN40DN50DN65DN80DN100DN125DN150DN200英寸1/23/411.251.522.534568外径mm壁厚mm最小壁 焊管（6 米定尺）镀锌管(6 米定尺）厚 mm米重 kg 根重 kg 米重 kg 根重 kg21.326.933.742.448.360.376.188.9114.3140168.3219.1DN20082.82.452.82.453.22.83.53.063.53.063.83.3254.03.54.04.04.54.56.0（焊管）219.16.5（热镀锌）1.281.662.413.363.875.297.118.3810.8

35、815.0418.1831.537.689.9614.4620.1623.2231.7442.6650.2865.2890.24109.08189.181.3571.762.5543.564.105.6077.5368.8811.5315.94219.278.1410.5615.3221.3624.6033.6445.2153.2869.1898.65115.6236.12216.72镀锌钢管尺寸规格表公称口径 外径 壁厚 镀锌管壁黑铁管增加的重量系数MM MM MM 普通钢管 加厚钢管6 10.0 2 1.064 1.0598 13.5 2.75 1.056 1.04610 17.0 3.5

36、0 1.0561.04615 21.3 3.15 1.047 1.03920 26.8 3.40 1.046 1.03925 33.5 4.25 1.039 1.03232 42.3 5.15 1.039 1.032公称口径 外径壁厚镀锌管壁黑铁管增加的重量系数MMMMMM普通钢管加厚钢管40 48.0 4.00 1.036 1.03050 60.0 5.00 1.036 1.02865 75.5 5.25 1.034 1.02880 88.5 4.25 1.032 1.027100 114.0 7.00 1.032 1.026125 140.0 7.50 1.028 1.023150 165

37、.0 7.50 1.028 1.023镀锌钢管尺寸规格表说明：W=C0.02466(D-S)SW-镀锌管每米重量：kg/mC-镀锌管比黑铁管增加的重量系数D-黑铁管的外径S-黑铁管的壁厚镀锌管的分类镀锌钢管分冷镀管、热镀管，前者已被禁用，后者还被国家提倡暂时能用.热镀锌管：热镀锌管是使熔融金属与铁基体反应而产生合金层，从而使基体和镀层二者相结合。热镀锌是先将钢管进行酸洗，为了去除钢管表面的氧化铁，酸洗后，通过氯化铵或氯化锌水溶液或氯化铵和氯化锌混合水溶液槽中进行清洗，然后送入热浸镀槽中。热镀锌具有镀层均匀，附着力强，使用寿命长等优点。冷镀锌管：冷镀锌就是电镀锌，镀锌量很少，只有1050g/m2

38、，其本身的耐腐蚀性比热镀锌管相差很多。正规的镀锌管生产厂家，为了保证质量，大多不采用电镀锌（冷镀）。只有那些规模小、设备陈旧的小企业采用电镀锌，当然他们的价格也相对便宜一些。目前建设部已正式下文，淘汰技术落后的冷镀锌管，今后不准用冷镀锌管作水、煤气管。热镀锌钢管：钢管基体与熔融的镀液发生复杂的物理、化学反应，形成耐腐蚀的结构紧密的锌一铁合金层。合金层与纯锌层、钢管基体融为一体。故其耐腐蚀能力强。冷镀锌钢管：锌层是电镀层，锌层与钢管基体独立分层。锌层较薄，锌层简单附着在钢管基体上，容易脱落。故其耐腐蚀性能差。在新建住宅中，禁止使用冷镀锌钢管作为给水管。镀锌钢管的用途常说的镀锌管，镀锌管的用途现在

39、煤气、暖气用的那种铁管也是镀锌管，镀锌管作为水管，使用几年后，管内产生大量锈垢，流出的黄水不仅污染洁具，而且夹杂着不光滑内壁滋生的细菌，锈蚀造成水中重金属含量过高，严重危害人体的健康。六七十年代，国际上发达国家开始开发新型管材，并陆续禁用镀锌管。中国建设部等四部委也发文明确从二 000 年起禁用镀锌管，目前新建小区的冷水管已经很少使用镀锌管了，有些小区的热水管使用的是镀锌管。镀锌管规格有：镀锌管规格有：4 4 分，分，6 6 分，分，1 1 寸，寸，1.21.2 寸，寸，1.51.5 寸，寸，2 2 寸，寸，2.52.5 寸，寸，3 3 寸寸4 4 寸，寸，5 5 寸，寸，6 6 寸，寸，8

40、8 寸寸镀锌管执行标准镀锌管执行标准:GBT/T81622021GBT/T81622021、GB/T81632021GB/T81632021、GB30872021GB30872021、GB53102021GB53102021、GB64792000GB64792000、GB99482006GB99482006、GB53121999GB53121999、GB/T189842003GB/T189842003、JISG3457JISG3457、DIN1717579DIN1717579、ASTMASTM、ASMEASME 等。等。镀锌管应该达到的技术要求镀锌管应该达到的技术要求1、牌号和化学成分镀锌钢管

41、用钢的牌号和化学成分应符合 GB 3092 所规定的黑管用钢的牌号和化学成分。2、制造方法黑管的制造方法（炉焊或电焊）由制造厂选择。镀锌采用热浸镀锌法。3、螺纹及管接头3.1 带螺纹交货的镀锌钢管，螺纹应在镀锌后车制。螺纹应符合YB822 的规定。3.2 钢制管接头应符合 YB 238 的规定；可锻铸铁管接头应符合 YB230 的规定。4、力学性能钢管镀锌前的力学性能应符合 GB 3092 的规定。5、镀锌层的均匀性镀锌钢管应作镀锌层均匀性的试验。钢管试样在硫酸铜溶液中连续浸渍 5 次不得变红（镀铜色）。6、冷弯曲试验公称口径不大于 50mm 的镀锌钢管应作冷弯曲试验。弯曲角度为 90，弯曲半

42、径为外径的8 倍。试验时不带填充物，试样焊缝处应置于弯曲方向的外侧或上部。试验后，试样上不应有裂缝及锌层剥落同象。7、水压试验水压试验应在黑管进行，也可用涡流探伤代替水压试验。试验压力或涡流探伤对比试样尺寸应符合GB 3092 的规定。低压流体输送用镀锌焊接钢管（热浸镀锌部分）1、镀锌层的均匀性：钢管试样在硫酸铜溶液中连续浸渍5 次不得变红（镀铜色）2、表面质量：镀锌钢管的表面应有完整的镀锌层，不得有未镀上的黑斑和气泡存在，允许有不大的粗糙面和局部锌瘤存在。3、镀锌层重量：根据需方要求，镀锌钢管可作锌层重量测定，其平均值应不小于 500g/平方米，其中任何试样不得小于 480g/平方米。镀锌管

43、定义热镀锌管是使熔融金属与铁基体反应而产生合金层，从而使基体和镀层二者相结合。热镀锌是先将钢管进行酸洗，为了去除钢管表面的氧化铁，酸洗后，通过氯化铵或氯化锌水溶液或氯化铵和氯化锌混合水溶液槽中进行清洗，然后送入热浸镀槽中。热镀锌具有镀层均匀，附着力强，使用寿命长等优点。冷镀锌就是电镀锌，镀锌量很少，只有1050g/m2，其本身的耐腐蚀性比热镀锌管相差很多。正规的镀锌管生产厂家，为了保证质量，大多不采用电镀锌(冷镀)。只有规模小、设备陈旧的小企业采用电镀锌，当然他们的价格也相对便宜一些。建设部已正式下文，淘汰技术落后的冷镀锌管，不准用冷镀锌管作水、煤气管。一般现在用的镀锌钢管都是热镀锌的，而电气

44、上用的线槽等用的是冷镀锌，颜色有一定的区别冷镀-只在外管壁镀锌,热镀-内外都镀.镀锌焊管是在焊接钢管的基础上再热镀锌(即在锌锅内将锌溶化,再将钢管浸入液体锌中一段时间取出,再冷却吹干).使钢管内外壁同时有一层锌层附着.镀锌管一般用于低压流体(即水,液体煤气)的输送.镀锌管标准分类为提高钢管的耐腐蚀性能，对一般钢管(黑管)进行镀锌。镀锌钢管分热镀锌和电钢锌两种，热镀锌镀锌层厚，电镀锌成本低。吹氧焊管：用作炼钢吹氧用管，一般用小口径的焊接钢管，规格由 3/8 寸-2 寸八种。用 08、10、15、20 或 Q195-Q235 钢带制成。为防蚀，有的进行渗铝处理。镀锌管计算公式：镀锌管计算公式：（外

45、径外径-壁厚）壁厚）*壁厚壁厚*0.02466=kg/*0.02466=kg/米米（每米的重量）（每米的重量）国家标准镀锌管DN15*2.75DN20*2.75DN25*3.25DN32*3.5DN40*3.5DN50*3.5DN65*3.75DN80*4DN100*4DN125*4.5DN150*4.5热镀锌钢管的要求：DN70 的要求壁厚达到 3.75，DN100 的要求壁厚达到 4.0mm，DN150的，要求壁厚达到4.5mm.一般消防上普遍采用这 3 种管径的管材。不过对钢管，国家允许壁厚有 10%的负差，也就是说，如果国标要求壁厚为4.0mm，实际能达到3.6mm 以上就可以了。镀锌

46、管相关资料镀锌管相关资料钢管重量计算公式钢管重量计算公式:(:(外径外径-壁厚壁厚)*)*壁厚壁厚*0.02466=kg/*0.02466=kg/米米(每米的重量每米的重量)规格公称内径（毫米）DN15DN20DN25DN32DN40DN50DN65DN80DN100DN125DN150DN200英寸1/23/411.251.522.534568外径 mm 壁厚 mm 最小壁 焊管（6 米定尺）镀锌管(6 米定尺）厚 mm米重 kg 根重 kg 米重 kg 根重 kg21.326.933.742.448.360.376.188.9114.3140168.3219.12.82.452.82.45

47、3.22.83.53.063.53.063.83.3254.03.54.04.04.54.5 6.0（焊管）219.1 6.5（热镀锌）1.281.662.413.363.875.297.118.3810.8815.0418.1831.537.689.9614.4620.1623.2231.7442.6650.2865.2890.24109.08189.181.3571.762.5543.564.105.6077.5368.8811.5315.94219.278.1410.5615.3221.3624.6033.6445.2153.2869.1898.65115.6236.12216.72DN

48、2008镀锌钢管尺寸规格表公称口径 外径 壁厚 镀锌管壁黑铁管增加的重量系数MM MM MM 普通钢管 加厚钢管6 10.0 2 1.064 1.0598 13.5 2.75 1.056 1.04610 17.0 3.50 1.0561.04615 21.3 3.15 1.047 1.03920 26.8 3.40 1.046 1.03925 33.5 4.25 1.039 1.03232 42.3 5.15 1.039 1.032公称口径 外径壁厚镀锌管壁黑铁管增加的重量系数MMMMMM普通钢管 加厚钢管40 48.0 4.00 1.036 1.03050 60.0 5.00 1.036 1

49、.02865 75.5 5.25 1.034 1.02880 88.5 4.25 1.032 1.027100 114.0 7.00 1.032 1.026125 140.0 7.50 1.028 1.023150 165.0 7.50 1.028 1.023镀锌钢管尺寸规格表说明：W=C0.02466(D-S)SW-镀锌管每米重量：kg/mC-镀锌管比黑铁管增加的重量系数D-黑铁管的外径S-黑铁管的壁厚镀锌管的分类镀锌钢管分冷镀管、热镀管，前者已被禁用，后者还被国家提倡暂时能用.热镀锌管：热镀锌管是使熔融金属与铁基体反应而产生合金层，从而使基体和镀层二者相结合。热镀锌是先将钢管进行酸洗，为了

50、去除钢管表面的氧化铁，酸洗后，通过氯化铵或氯化锌水溶液或氯化铵和氯化锌混合水溶液槽中进行清洗，然后送入热浸镀槽中。热镀锌具有镀层均匀，附着力强，使用寿命长等优点。冷镀锌管：冷镀锌就是电镀锌，镀锌量很少，只有 1050g/m2，其本身的耐腐蚀性比热镀锌管相差很多。正规的镀锌管生产厂家，为了保证质量，大多不采用电镀锌（冷镀）。只有那些规模小、设备陈旧的小企业采用电镀锌，当然他们的价格也相对便宜一些。目前建设部已正式下文，淘汰技术落后的冷镀锌管，今后不准用冷镀锌管作水、煤气管。热镀锌钢管：钢管基体与熔融的镀液发生复杂的物理、化学反应，形成耐腐蚀的结构紧密的锌一铁合金层。合金层与纯锌层、钢管基体融为一