钢管公称直径对照表.doc

1、一般来说,管子的直径可分为外径,内径,公称直径. 1. 无缝钢管外径用字母 D 来表示,其后附加外直径尺寸和壁厚 .例如外径为108mm 的无缝钢管,壁厚为 5mm,用 D108*5 表示. 2. 镀锌钢管采用 DN 表示. 3. 在设计图纸中所以要用公称直径,目的是为了根据公称直径可以确定管子,管件,阀门,法兰,垫片等结构尺寸,公称尺寸用 DN 表示,如果在设计图纸中采用外径表示,也应该作出管道规格对照表,表明某种管道的公称直径,壁厚. 世界各国应用的标准体系虽然多,大体可分成两大类,即大外径系列和小外径系列. 大外径系列:(DN-公称直径.-外径)DN15- 22mm. DN20- 27m

2、m. DN25- 34mm. DN32- 42mm. DN40- 48mm. DN50- 60mm. DN65- 76(73)mm. DN80- 89mm. DN100-114mm. DN125-140mm. DN150-168mm. DN200-219mm. DN250-273mm. DN300-324mm. DN350-360mm. DN400-406mm. DN450-457mm. DN500-508mm. DN600-610mm. 小外径系列: DN15- 18mm. DN20- 25mm. DN25- 32mm. DN32- 38mm. DN40- 45mm. DN50- 57mm.

3、 DN65- 73mm. DN80- 89mm. DN100-108mm. DN125-133mm. DN150-159mm. DN200-219mm. DN250-273mm. DN300-325mm. DN350-377mm. DN400-426mm. DN450-480mm. DN500-530mm. DN600-630mm. 一般标准钢管都可从材料表中查得每米重量. 要是非标准钢管可通过量得实际尺寸来计算其重量. 重量=(外径-壁厚)*壁厚*长度*7.85 重量单位- 吨. 其于单位- 米.钢管公称直径（英寸与毫米对照表 1）外径 壁厚 重量英寸 毫米. 单位 毫米. 英寸. 公斤/米

4、. 磅/英尺.1/8” 10.3 10S 1.24 0.049 0.28 0.191/8” 10.3 STD-40 1.73 0.068 0.37 0.251/8” 10.3 XS-80 2.41 0.095 0.48 0.321/4” 13.7 10S 1.65 0.065 0.50 0.341/4” 13.7 STD-40 2.24 0.088 0.64 0.431/4” 13.7 XS-80 3.02 0.119 0.81 0.553/8” 17.1 10S 1.65 0.065 0.64 0.433/8” 17.1 STD-40 2.31 0.091 0.85 0.573/8” 17.

5、1 XS-80 3.20 0.126 1.11 0.751/2” 21.3 5S 1.05 0.042 0.53 0.361/2” 21.3 10S 2.11 0.083 1.01 0.681/2” 21.3 STD-40 2.77 0.109 1.28 0.861/2” 21.3 XS-80 3.73 0.147 1.63 1.101/2” 21.3 160 4.78 0.188 1.97 1.331/2” 21.3 XXS 7.47 0.294 2.57 1.733/4” 26.7 5S 1.65 0.065 1.03 0.693/4” 26.7 10S 2.11 0.083 1.29 0

6、.873/4” 26.7 STD-40 2.87 0.113 1.70 1.143/4” 26.7 XS-80 3.91 0.154 2.22 1.493/4” 26.7 160 5.56 0.219 2.93 1.973/4” 26.7 XXS 7.82 0.308 3.68 2.481” 33.4 5S 1.65 0.065 1.31 0.881” 33.4 10S 2.77 0.109 2.12 1.421” 33.4 STD-40 3.38 0.133 2.53 1.701” 33.4 XS-80 4.55 0.179 3.27 2.181” 33.4 160 6.35 0.250 4

7、.28 2.881” 33.4 XXS 9.09 0.358 5.51 3.711 1/4” 42.2 5S 1.65 0.065 1.67 1.121 1/4” 42.2 10S 2.77 0.109 2.72 1.831 1/4” 42.2 STD-40 3.56 0.140 3.43 2.311 1/4” 42.2 XS-80 4.85 0.191 4.51 3.031 1/4” 42.2 160 6.35 0.250 5.67 3.811 1/4” 42.2 XXS 9.70 0.382 7.85 5.281 1/2” 48.3 5S 1.65 0.065 1.92 1.291 1/2

8、” 48.3 10S 2.77 0.109 3.14 2.111 1/2” 48.3 STD-40 3.68 0.145 4.09 2.751 1/2” 48.3 XS-80 5.08 0.200 5.47 3.681 1/2” 48.3 160 7.14 0.281 7.32 4.921 1/2” 48.3 XXS 10.15 0.400 9.65 6.492” 60.3 5S 1.65 0.065 2.41 1.622” 60.3 2.11 0.083 3.06 2.062” 60.3 10S 2.77 0.109 3.97 2.672” 60.3 3.18 0.125 4.52 3.04

9、2” 60.3 STD-40 3.91 0.154 5.49 3.692” 60.3 XS-80 5.54 0.218 7.56 5.082” 60.3 160 8.74 0.344 11.23 7.552” 60.3 XXS 11.07 0.436 13.58 9.132 1/2” 73.0 5S 2.11 0.083 3.73 2.512 1/2” 73.0 10S 3.05 0.120 5.32 3.572 1/2” 73.0 30 4.78 0.188 8.12 5.462 1/2” 73.0 STD-40 5.16 0.203 8.72 5.862 1/2” 73.0 XS-80 7

10、.01 0.276 11.52 7.742 1/2” 73.0 160 9.53 0.375 15.08 10.142 1/2” 73.0 XXS 14.02 0.552 20.60 13.843” 88.9 5S 2.11 0.083 4.56 3.073” 88.9 2.77 0.109 5.95 4.003” 88.9 10S 3.05 0.120 6.52 4.383” 88.9 3.18 0.125 6.79 4.563” 88.9 3.58 0.141 7.61 5.123” 88.9 3.96 0.156 8.38 5.633” 88.9 STD-40 5.49 0.216 11

11、.41 7.673” 88.9 XS-80 7.62 0.300 15.43 10.373” 88.9 160 11.13 0.438 21.56 14.493” 88.9 XXS 15.24 0.600 27.96 18.793 1/2” 101.6 5S 2.11 0.083 5.23 3.523 1/2” 101.6 10S 3.05 0.120 7.49 5.033 1/2” 101.6 30 4.78 0.188 11.53 7.753 1/2” 101.6 STD-40 5.74 0.226 13.71 9.213 1/2” 101.6 XS-80 8.08 0.318 18.83

12、 12.654” 114.3 5S 2.11 0.083 5.90 3.974” 114.3 10S 3.05 0.120 8.46 5.684” 114.3 3.18 0.125 8.81 5.924” 114.3 3.96 0.156 10.89 7.324” 114.3 4.37 0.172 11.97 8.054” 114.3 4.78 0.188 13.04 8.764” 114.3 5.16 0.203 14.03 9.434” 114.3 5.56 0.219 15.06 10.624” 114.3 STD-40 6.02 0.237 16.24 10.914” 114.3 6.

13、35 0.250 17.08 11.484” 114.3 7.14 0.281 19.06 12.814” 114.3 7.92 0.312 20.99 14.114” 114.3 XS-80 8.56 0.337 22.55 15.154” 114.3 120 11.13 0.438 28.61 19.234” 114.3 160 13.49 0.531 33.88 22.774” 114.3 XXS 17.12 0.674 41.45 27.855” 141.3 3.96 0.156 13.55 9.115” 141.3 4.78 0.188 16.26 10.935” 141.3 5.5

14、6 0.219 18.80 12.635” 141.3 STD-40 6.55 0.258 21.99 14.785” 141.3 7.14 0.281 23.86 16.045” 141.3 7.92 0.312 26.32 17.695” 141.3 XS-80 9.53 0.375 31.28 21.025” 141.3 120 12.70 0.500 40.69 27.345” 141.3 160 15.88 0.625 49.62 33.345” 141.3 XXS 19.05 0.750 58.01 38.986” 168.3 4.37 0.172 17.84 11.996” 16

15、8.3 4.78 0.188 19.47 13.096” 168.3 5.16 0.203 20.97 14.096” 168.3 5.56 0.219 22.54 15.156” 168.3 6.35 0.250 25.62 17.226” 168.3 STD-40 7.11 0.280 28.55 19.196” 168.3 7.92 0.312 31.64 21.266” 168.3 8.74 0.344 34.74 23.356” 168.3 9.53 0.375 37.69 25.336” 168.3 XS-80 10.97 0.432 42.99 28.896” 168.3 12.

16、70 0.500 49.23 33.086” 168.3 120 14.27 0.562 54.75 36.796” 168.3 15.88 0.625 60.30 40.526” 168.3 160 18.26 0.719 68.25 45.866” 168.3 19.05 0.750 70.85 47.616” 168.3 XXS 21.95 0.864 80.02 53.776” 168.3 22.23 0.875 80.87 54.348” 219.1 4.78 0.188 25.52 17.158” 219.1 5.16 0.203 27.50 18.488” 219.1 5.56

17、0.219 29.58 19.88钢管公称直径（英寸与毫米对照表 2）8” 219.1 20 6.35 0.250 33.65 22.618” 219.1 30 7.04 0.277 37.19 24.998” 219.1 7.92 0.312 41.66 28.008” 219.1 STD-40 8.18 0.322 42.98 28.888” 219.1 8.74 0.344 45.80 30.788” 219.1 9.53 0.375 49.75 33.438” 219.1 60 10.31 0.406 53.62 36.038” 219.1 11.13 0.438 57.66 38.7

18、58” 219.1 XS-80 12.70 0.500 65.30 43.888” 219.1 14.27 0.562 72.81 48.938” 219.1 100 15.09 0.594 76.69 51.538” 219.1 15.88 0.625 80.31 54.028” 219.1 120 18.26 0.719 91.36 61.398” 219.1 19.05 0.750 94.93 63.798” 219.1 140 20.62 0.812 101.95 68.518” 219.1 XXS 22.23 0.875 108.96 73.228” 219.1 160 23.01

19、0.906 112.40 75.598” 219.1 25.40 1.000 122.56 82.3610” 273.0 4.78 0.188 31.94 21.4610” 273.0 5.16 0.203 34.43 23.1410” 273.0 5.56 0.219 37.04 24.8910” 273.0 20 6.35 0.250 42.18 28.3410” 273.0 7.09 0.279 46.97 31.5610” 273.0 30 7.80 0.307 51.53 34.6310” 273.0 8.74 0.344 57.34 38.6610” 273.0 STD-40 9.

20、27 0.365 60.90 40.9210” 273.0 11.13 0.438 72.61 48.7910” 273.0 XS-60 12.70 0.500 82.35 55.3410” 273.0 14.27 0.562 91.92 61.8010” 273.0 80 15.09 0.594 96.95 65.1510” 273.0 15.88 0.625 101.71 68.3510” 273.0 100 18.26 0.719 115.87 77.8610” 273.0 20.62 0.812 129.64 87.1110” 273.0 120 21.44 0.844 134.35

21、90.2810” 273.0 22.23 0.875 138.87 93.3210” 273.0 23.83 0.938 147.91 99.3910” 273.0 XXS-140 25.40 1.000 156.66 105.2210” 273.0 160 28.58 1.125 174.01 116.9310” 273.0 31.75 1.250 190.81 128.2212” 323.8 20 6.35 0.250 50.22 33.7512” 323.8 7.14 0.281 56.32 37.8512” 323.8 7.92 0.312 62.32 41.8812” 323.8 3

22、0 8.38 0.330 65.85 44.2312” 323.8 8.74 0.344 68.60 46.1012” 323.8 STD 9.53 0.375 74.61 50.1312” 323.8 40 10.31 0.406 80.51 54.1012” 323.8 11.13 0.438 86.69 58.2512” 323.8 XS 12.70 0.500 98.42 66.1412” 323.8 60 14.27 0.562 110.03 73.9412” 323.8 15.88 0.625 121.81 81.8512” 323.8 80 17.48 0.688 133.38

23、89.6312” 323.8 19.05 0.750 14.62 97.1812” 323.8 20.62 0.812 155.73 104.6512” 323.8 100 21.44 0.844 161.48 108.5112” 323.8 23.83 0.938 178.07 119.6512” 323.8 XXS-120 25.40 1.000 188.80 126.8712” 323.8 26.97 1.062 199.42 134.0012” 323.8 140 28.58 1.125 210.18 141.2312” 323.8 31.75 1.250 230.98 155.211

24、2” 323.8 160 33.32 1.312 241.10 162.0114” 355.6 10 6.35 0.250 55.25 37.1314” 355.6 20 7.92 0.312 68.60 46.114” 355.6 8.74 0.344 75.52 50.7514” 355.6 STD-30 9.53 0.375 82.16 55.2114” 355.6 10.31 0.406 88.68 59.5914” 355.6 40 11.13 0.438 95.51 64.1814” 355.6 XS 12.70 0.500 108.48 72.9014” 355.6 14.27

25、0.562 121.33 81.5314” 355.6 60 15.09 0.594 128.00 86.0114” 355.6 80 19.05 0.750 159.71 107.3214” 355.6 100 23.83 0.938 196.94 132.3414” 355.6 25.40 1.000 208.92 140.3914” 355.6 26.97 1.062 220.78 148.3614” 355.6 120 27.79 1.094 226.93 152.4914” 355.6 140 31.75 1.250 256.13 172.1114” 355.6 160 35.71

26、1.406 284.56 191.2116” 406.4 10 6.35 0.250 63.28 42.5216” 406.4 7.14 0.281 71.01 47.7216” 406.4 20 7.92 0.312 78.62 52.8316” 406.4 8.74 0.344 86.58 58.1816” 406.4 STD-30 9.53 0.357 94.21 63.3116” 406.4 10.31 0.406 101.72 68.3616” 406.4 11.13 0.438 109.59 73.6416” 406.4 XS-40 12.70 0.500 124.55 83.69

27、16” 406.4 14.27 0.562 139.39 93.6716” 406.4 15.88 0.625 154.48 103.8016” 406.4 60 16.66 0.656 161.74 108.6916” 406.4 17.48 0.688 169.35 113.8016” 406.4 19.05 0.750 183.81 123.5216” 406.4 20.62 0.812 198.15 133.1516” 406.4 80 21.44 0.844 205.60 138.1516” 406.4 25.40 1.000 241.06 161.9816” 406.4 100 2

28、6.19 1.031 248.05 166.6816” 406.4 120 30.96 1.219 289.54 194.5616” 406.4 31.75 1.250 296.31 199.1116” 406.4 140 36.53 1.438 336.57 226.1616” 406.4 160 40.49 1.594 369.06 247.9918” 457 20 7.92 0.312 88.60 59.5418” 457 8.74 0.344 97.59 65.5818” 457 STD 9.53 0.375 106.23 71.3818” 457 10.31 0.406 114.72

29、 77.0918” 457 30 11.13 0.438 123.62 83.0718” 457 XS 12.70 0.500 140.56 94.4518” 457 40 14.27 0.562 157.38 105.7518” 457 15.88 0.625 174.50 117.2518” 457 17.48 0.688 191.38 128.6018” 457 60 19.05 0.750 207.82 139.6518” 457 80 23.83 0.938 257.13 172.7818” 457 25.40 1.000 273.08 183.5018” 457 26.97 1.0

30、62 288.91 194.1418” 457 28.58 1.125 305.01 204.9618” 457 100 29.36 1.156 312.76 210.1618” 457 30.18 1.188 320.88 215.6218” 457 31.75 1.250 336.33 226.0018” 457 120 34.93 1.375 367.25 246.7818” 457 140 39.67 1.562 412.40 277.1218” 457 160 45.24 1.781 464.03 311.8120” 508 8.74 0.344 108.70 73.0420” 50

31、8 STD-20 9.53 0.375 118.33 79.5120” 508 10.31 0.406 127.82 85.8920” 508 11.13 0.438 137.76 92.5720” 508 XS-30 12.70 0.500 156.70 105.320” 508 14.27 0.562 175.51 117.9420” 508 40 15.09 0.594 185.28 124.5020” 508 15.88 0.625 194.67 130.8120” 508 17.48 0.688 213.59 143.5320” 508 19.05 0.750 232.03 155.

32、9220” 508 60 20.62 0.812 250.34 168.2220” 508 25.40 1.000 305.35 205.1820” 508 80 26.19 1.031 314.33 211.2220” 508 30.18 1.188 359.22 241.3820” 508 31.75 1.250 376.66 253.1020” 508 100 32.54 1.281 385.40 258.9720” 508 120 38.10 1.500 445.97 299.6720” 508 140 44.45 1.750 513.27 344.9020” 508 160 50.0

33、1 1.969 570.54 383.3822” 559 8.74 0.344 119.80 80.522” 559 STD-20 9.53 0.375 130.44 87.6522” 559 XS-30 12.70 0.500 172.83 116.1422” 559 15.88 0.625 214.84 144.3722” 559 17.48 0.688 235.79 158.4422” 559 19.05 0.750 256.23 172.1822” 559 20.62 0.812 276.54 185.8324” 610 8.74 0.344 130.90 87.9624” 610 S

34、TD-20 9.53 0.375 142.55 95.7924” 610 XS 12.70 0.500 188.96 126.9824” 610 30 14.27 0.562 211.76 142.3024” 610 15.88 0.625 233.02 157.9324” 610 40 17.48 0.688 258.00 173.3724” 610 19.05 0.750 280.43 188.4424” 610 20.62 0.812 302.73 203.4224” 610 60 24.61 0.969 358.87 241.1524” 610 25.40 1.000 369.89 2

35、48.5524” 610 26.97 1.062 391.69 263.2024” 610 30.18 1.188 435.90 292.9124” 610 80 30.96 1.219 442.86 297.5924” 610 100 38.89 1.531 553.26 371.7224” 610 120 46.02 1.812 646.52 434.4424” 610 140 52.37 2.062 727.45 488.8226” 660 STD 9.53 0.375 154.42 103.7726” 660 XS-20 12.70 0.500 204.78 137.6126” 660

36、 17.48 0.688 279.77 188.0026” 660 19.05 0.750 304.15 204.3828” 711 STD 9.53 0.375 166.52 118.9028” 711 XS-20 12.70 0.500 220.91 148.4428” 711 17.48 0.688 301.98 202.9228” 711 19.05 0.750 328.35 220.6430” 762 STD 9.53 0.375 178.63 120.0330” 762 XS-20 12.70 0.500 237.05 159.2932” 813 STD 9.53 0.375 19

37、0.74 128.1732” 813 XS-20 12.70 0.500 253.18 170.1334” 864 STD 9.53 0.375 202.84 136.3034” 864 XS-20 12.70 0.500 269.31 180.9736” 914 STD 9.53 0.375 214.71 144.2836” 914 XS-20 12.70 0.500 285.13 191.6038” 965 STD 9.53 0.375 226.82 152.4238” 965 XS 12.70 0.500 301.27 202.4440” 1016 STD 9.53 0.375 238.

38、93 160.5540” 1016 XS 12.70 0.500 317.40 213.2842” 1067 STD 9.53 0.375 251.04 168.6942” 1067 XS 12.70 0.500 333.54 224.1344” 1118 STD 9.53 0.375 263.14 176.8244” 1118 XS 12.70 0.500 349.67 234.9246” 1168 STD 9.53 0.375 275.01 184.8046” 1168 XS 12.70 0.500 365.49 245.5948” 1219 STD 9.53 0.375 287.12 1

39、92.9348” 1219 XS 12.70 0.500 381.62 256.4352” 1321 9.53 0.375 311.33 209.2052” 1321 12.70 0.500 413.89 278.1256” 1422 9.53 0.375 335.31 225.3256” 1422 12.70 0.500 445.84 299.5960” 1524 9.53 0.375 359.52 241.5060” 1524 12.70 0.500 478.11 321.2764” 1626 9.53 0.375 383.74 257.8664” 1626 12.70 0.500 510

40、.38 342.9668” 1727 12.70 0.500 542.33 364.4372” 1829 12.70 0.500 574.60 386.1176” 1930 12.70 0.500 606.55 407.5880” 2032 14.27 0.562 717.23 481.95公称外径Nominal Diameter外径Outside Diameter(mm)厚度（mm）Nomial Wall ThicknessN.B NPS SCH5S SCH10S SCH40S8 1/4 13.72 1.65 2.2410 3/8 17.15 1.65 2.3115 1/2 21.34 1.

41、65 2.11 2.7720 3/4 26.67 1.65 2.11 2.8725 1 33.40 1.65 2.77 3.3832 1-1/4 42.16 1.65 2.77 3.5640 1-1/2 48.26 1.65 2.77 3.6850 2 60.33 1.65 2.77 3.9165 2-1/2 73.03 2.11 3.05 5.1680 3 88.90 2.11 3.05 5.4990 3-1/2 101.60 2.11 3.05 5.74100 4 114.30 2.11 3.05 6.02125 5 141.30 2.77 3.40 6.55150 6 168.28 2.77 3.40 7.11200 8 219.08 2.77 3.76 8.18250 10 273.05 3.40 4.19