钢管公称直径与内外径的关系对照表.docx

钢管公称直径与内外径的关系对照表.docx

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钢管公称直径与内外径的关系对照表

钢管公称直径与内、外径的关系对照表.

钢管公称直径与内、外径的关系对照1.总则1.0.1本标准规定了石油化工企业用DN10-DN2000的碳钢素钢、合金钢、奥氏体不锈钢无缝钢管及焊接钢管的尺寸系列。

10.21.0.3本标准适用于石油化工企业中的一般钢制管道。

本标准不适用于仪表用管道。

本标准代替《钢管的公称直径、外径和壁厚》（BA3-4-1-92）。

2.引用标准GB8163GB9948GB6479GB5130GB/T14976GB/T3091GB/T3092GB/T14980SY/T5037输送液体用无缝钢管石油裂化用无缝钢管化肥设备用高压无缝钢管高压锅炉用无缝钢管流体输送用不锈钢无缝钢管低压流体输送用镀锌焊接钢管低压流体输送用焊接钢管低压流体输送用大直径电焊钢管普通流体输送管道用螺旋埋弧焊钢管SH3405石油化工企业钢管尺寸系列GB3274GB912GB6654GB3531GB5681GB711GB713GB3280GB/T4237GB4238普通碳素结构钢和低合金结构钢热轧厚钢板技术条件普通碳素结构钢和低合金结构钢薄钢板技术条件压力容器用碳素钢和低合金钢厚钢板低温压力容器用低合金厚钢板技术条件压力容器用热轧钢带优质碳结构钢热轧厚钢板和宽钢带锅炉用碳素钢和低合金钢板不锈钢冷轧钢板不锈钢热轧钢板耐热钢板执行本标准时，尚应符合上述相关标准的要求。

3.一般规定3.0.1中国石油化工总公司标准SH3045-96《石油化工企业钢管尺寸系列》已颁布代替SHJ405-89并开始实施.。

考虑国内目前钢管及管道法兰组件生产和供应的实际情13

况。

全部执行该标准尚有一定困难。

本标准基本按照SH3405-96的规定，但作了若干修改，主要有；a）公称直径DN350～DN1000钢管的外径仍按我院现行规定编制，以便于与机械部法兰（JB/T81-94～JB/T86-94）配套连接。

b）考虑到在老厂改造设计中仍有可能选用小外径钢管，本标准补充列入了外径钢管系列，但不推荐选用。

c）本标准列出了中国石化总公司标准《石油化工企业钢管尺寸系列》（SH3405-96），当选用该系列时，DN≥350须选用与SH相配套的的法兰、管件、紧固件和垫片系列。

DN≤300可选用SH标准，也可选用其他相配套的标准。

d）表4.0.1～表4.0.4中DN≤300的钢管尺寸，亦可与国外某些标准（例如ANSI标准）配套使用。

但如果管子为国外订货，则其外径和壁厚应符合国外有关标准。

3.0.2有缝钢管DN6～DN150按《低压流体输送用镀锌焊接钢管》（GB/T3091-93）和《低压流体输送用焊接钢管》（GB/T3092-93）选用。

DN150～500按《低压流体输送用大直径电焊钢管》（GB/T14980-94）选用。

4.钢管尺寸系列4.0.14.0.24.0.34.0.44.0.54.0.5。

4.0.64.0.74.0.8奥氏体不锈钢无缝钢管尺寸和理论质量见表4.0.1。

碳素钢、合金钢无缝钢管的尺寸和理论质量见表4.0.2。

奥氏体不锈钢焊接钢管的尺寸和理论质量见表4.0.3。

碳素钢、合金钢焊接钢管的尺寸和理论质量见表4.0.4。

小外径系列碳素钢、合金钢、奥氏体不锈钢无缝钢管的尺寸和理论质量见表有缝钢管的尺寸和理论质量见表4.0.6.1表4.0.6.2表4.0.6.3。

中国石化总公司标准SH3046的钢管尺寸系列见附录A。

钢管的每米理论质量可按下式计算：

M=0.02466t（D-t）...................................（4.0.8）式中：

M?

?

钢管质量，kg/mt?

?

钢管壁厚，mmD?

?

钢管外径，mm对于奥氏体不锈钢钢管，按上式计算后再乘以1.015。

精确计算时，各种奥氏体钢的密度见GB/T14976-94中的表5。

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表4.0.1公称外径sch5smm10152025（32）4050（65）80100（125）1502002503001722273442486076891141401682192733251.21.61.61.61.61.61.62.02.02.02.82.82.83.54.0kg/m0.470.821.021.301.621.862.343.704.365.619.6211.5815.1523.6132.13奥氏体不锈钢无缝钢管尺寸和理论质量壁厚及理论质量sch10smm1.62.02.02.82.82.82.83.03.03.03.53.54.04.04.5kg/m0.621.001.252.192.753.174.015.486.468.3311.9614.4121.5326.9336.10sch20smm2.02.52.53.03.03.03.53.54.04.05.05.06.56.56.5kg/m0.751.221.532.332.933.384.956.358.5111.0116.9020.4034.5743.3651.82sch40smm2.53.03.03.53.54.04.05.05.56.06.57.08.09.59.5kg/m0.911.431.802.673.374.415.618.8911.5016.2221.7228.2142.2562.6675.02sch80smm3.24.04.04.55.05.05.57.07.58.59.511.013.015.017.0kg/m1.111.802.303.324.635.387.5012.0915.3022.4531.0343.2367.0396.87131.06350400377426注:

4.04.537.3447.485.05.046.5652.69①公称壁厚超过sch80s的不锈钢钢管按表4.0.2选手;②粗实线以下的数据已超过我国现行的钢管标准的规格范围;③带括号者不推荐使用。

13

工程标准标准号:

BA3-4-1-1997钢管的公称直径、外径和壁厚日期年页月第日5页中国石化北京设计院表4.0.2公称直径DN10152025（32）4050（65）80100（125）150200250300350400450500550600mm1722273442486076891141401682192733253774264805305596303.54.54.55.05.05.56.56.56.58.08.08.09.59.59.54.887.939.3813.4416.6522.0434.0642.7251.0572.8082.4693.12121.94128.73145.366.57.08.08.59.59.511.013.013.014.025.8936.6052.2866.3486.1097.57127.22165.74175.04212.57mm外径sch20kg/msch30mmkg/mmm2.53.03.03.53.54.04.05.05.56.06.57.08.09.510.011.013.014.015.017.018.0sch40kg/m0.891.411.782.633.334.345.528.7511.3315.9821.4027.7941.6361.7377.6899.28132.40160.88190.50227.22271.655.06.06.57.08.09.510.013.014.015.017.019.020.022.025.06.7810.3613.2218.4726.0437.1351.5483.35107.37133.90171.46216.00251.53291.33372.98sch60mmkg/mmm3.54.04.04.55.05.05.57.07.58.59.511.013.015.017.019.022.024.026.028.032.0共碳素钢、合金钢无缝钢管的尺寸和理论质量（sch表示美标壁厚系列）壁厚及理论质量sch80kg/m1.171.782.273.274.565.307.3911.9115.0722.1130.5742.5966.0495.43129.12167.74219.18269.88323.14366.64471.8915.018.022.024.026.030.032.035.038.075.46113.19164.38208.92256.46332.91392.98452.26554.757.08.09.011.013.014.018.022.025.028.032.035.038.042.045.09.1513.4217.7627.9440.7153.1789.22136.17184.95240.98310.91384.08461.04535.48649.1720.025.028.032.036.040.045.048.052.098.15152.89205.07272.25346.23436.02538.20604.86741.185.05.56.56.57.08.59.511.014.016.018.024.028.034.036.040.045.050.054.060.02.102.924.415.697.0810.7915.5821.1634.5248.9366.58115.41169.17244.00302.73380.75482.72591.84672.48843.377.58.09.010.010.011.014.015.017.019.022.023.025.026.02.683.755.557.899.3713.2921.4027.3740.6656.6979.21111.17152.89191.71sch100mmkg/msch120mmkg/msch140mmkg/msch160mmkg/mmmxxskg/m注:

①粗实践以下的数据已超过我国现行的钢管标准的规格范围;②带括号者不推荐使用.3

工程标准标准号:

BA12-3-1-1997修改号:

日期1997年4月15日页钢管的公称直径、外径和壁厚中国石化北京设计院表4.0.3公称直径DN80100（125）150200250300350400450500（550）600（650）700（750）800（850）900（950）1000mm8911414016821927332537742648053055963066072076282086492096510204.365.615.416.986.468.337.498.51外径2.02.53.03.54.04.5共页第6奥氏体不锈钢焊接钢管的尺寸和理论质量公称壁厚mm5.06.07.08.09.010.011.012.0理论质量kg/m9.5210.5112.4614.3616.229.6811.0112.3313.6416.2218.7521.2323.658.6010.2911.9613.6215.2616.9020.1223.3026.4329.5132.5410.3612.3914.4116.4218.4220.4024.3328.2132.0435.8239.5543.2313.5516.2218.8821.5324.1626.7831.9937.1442.2547.3152.3157.2762.1823.6126.9330.2433.5440.1046.6153.0659.4765.8372.1478.3932.1435.1040.0547.9155.7263.4871.1978.8486.4594.0155.7264.8373.8982.9091.87100.77109.6463.0771.1978.7083.0573.4182.8783.7193.94104.13114.27124.3694.52106.11117.64129.14140.5791.64104.53117.37130.16142.90155.5996.72110.33123.90137.41150.88164.3093.71109.15124.55139.89155.18170.43185.6298.22114.41130.56146.65162.69178.69194.64107.22124.93142.57160.17177.72195.20212.65132.28150.98169.63188.22206.78225.27142.45162.59182.69202.75222.74242.69171.40192.61213.76234.85255.90182.62205.22227.78250.28272.73191.63215.35239.03262.66286.24202.64227.75252.81277.81302.77注:

带括号者不推荐使用13

表4.0.4公称外径碳素钢、合金钢焊接钢管的尺寸和理论质量公称壁厚mmLG/薄STD/标准9.010.011.012.0kg/mXS/加厚13.014.015.016.018.0直径DN150200250300350400450500（550）600（650）700（750）800（850）900（950）1000mm168219273325①4.05.06.07.08.0理论质量16.1820.1023.9727.7931.5635.2938.9621.2126.3931.5236.6041.6346.6151.5426.5333.0439.5145.9252.2858.5964.8671.0777.2483.3539.4645.8851.9147.2054.9062.1470.1477.5481.8254.8963.8772.3381.6562.5472.8082.4670.1381.6777.6890.5185.1892.62100.02107.37377426480530①559630660720762820864920965102099.28108.02116.69125.3292.55102.59112.58122.52132.40142.24152.0393.12104.54115.90127.23138.49149.72160.88172.0090.29102.99115.64128.24140.79153.29165.75178.14190.50202.8095.29108.70122.07135.38148.65161.87175.04188.16201.22214.2592.33107.54122.71137.82152.89167.91182.88197.80212.67227.49242.2696.77112.72128.63144.48160.29176.05191.76207.42223.03238.59254.10105.64123.08140.46157.80175.09192.32209.51226.65243.74260.78277.77130.33148.75267.12185.44203.72221.94240.11258.24276.32294.34140.34160.19179.99199.75219.45239.10258.71278.26297.77317.23168.87189.76210.60231.38252.12272.81293.45314.05334.59179.92202.19224.41246.58268.70290.77312.79334.76356.68188.80212.17235.50258.78282.01305.10328.32351.41374.44199.65224.38249.07273.70298.30322.82347.31371.75396.14273.23300.28327.29354.24381.14408.00434.81298.39327.95357.47386.94416.36445.73475.05533.54323.29355.35387.36419.32451.23483.09514.90578.38（1100）111812001220（1300）132113

续上表公称外径LG直径DN1400mm14204.05.06.07.08.09.0公称壁厚mmSTD10.011.0XS12.013.014.015.016.018.0理论质量kg/m347.71383.21416.66451.06485.41519.71553.96622.32373.35410.42447.43484.40521.31558.18595.00668.48397.03436.46475.84515.17554.46593.69632.87711.10423.41465.48507.50549.47591.40633.27675.09758.59446.35490.71535.02579.29623.50667.67711.79799.87473.47520.55567.57614.55661.48