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1、1 总则1.0.1 本标准适用于石油化工装置内的管道设计。1.0.2 执行标准时，尚应符合现行有关标准规定的要求。1.0.3 本标准中所列的管道跨距是按照我院工程设计标准装置内管道跨距的计算方法（BC3-5-1-96）编制的。1.0.4 本标准所列的管道跨距只供连续跨均布载荷下的水平直管使用。对于带末端跨的水平直管、水平弯管、水平型管、带垂直管段的Z型管和有集中载荷的水平直管的允许跨距，应按装置内管道跨距的计算方法（BC3-5-1-96）中的有关规定确定。1.0.5 本标准代替管线的跨距（BA3-3-10-90）和装置内管线的基本跨距（BA3-7-2-84）。2 编制的原始数据2.0.1 本标
2、准所列管道的跨距，按下列基本数据计算确定。 操作温度：T=250 管材：20号钢 许用应力：250=110MPa（壁厚16mm） 250=104MPa（壁厚=1740mm） 弹性模数：E250=1.864105MPa3 管道的跨距3.0.1 无缝钢管不保温管道允许跨距见表3.0.1。3.0.2 LG级大直径焊接钢管不保温管道允许跨距见表3.0.2。3.0.3 STD级大直径焊接钢管不保温管道允许跨距见表3.0.3。3.0.4 XS级大直径焊接钢管不保温管道允许跨距见表3.0.4。3.0.5 SCH20无缝钢管保温管道允许跨距见表3.0.5。3.0.6 SCH40无缝钢管保温管道允许跨距见表3.
3、0.6。3.0.7 SCH80无缝钢管保温管道允许跨距见表3.0.7。3.0.8 LG级大直径焊接钢管保温管道允许跨距见表3.0.8。3.0.9 STD级大直径焊接钢管保温管道允许跨距见表3.0.9。3.0.10 XS级大直径焊接钢管保温管道允许跨距见表3.0.10。 表3.0.1 无缝钢管不保温管道允许跨距表公称外径sch20sch40sch80直径DNmm壁厚mm管自重kg/m水重kg/m总重kg/m允许跨距m壁厚mm管自重kg/m水重kg/m总重kg/m允许跨距m壁厚mm管自重kg/m水重kg/m总重kg/m允许跨距m5060.33.24.512.286.796.254.05.552.1
4、57.706.345.67.551.899.456.42(65)76.14.57.953.5411.487.075.08.773.4312.207.117.112.083.0115.097.218088.94.59.375.0114.387.565.611.504.7416.257.678.015.964.1720.137.79100114.35.013.488.5422.028.476.316.788.1224.908.638.822.897.3430.248.78(125)139.75.016.6113.2129.829.186.320.7212.0933.419.3910.031.981
5、1.2543.249.68150168.35.622.4719.3841.8510.007.128.2218.6546.8810.2411.042.6716.8159.4810.58200219.16.333.0633.4966.5511.218.041.6532.4074.0511.5212.563.6829.5993.2811.97250273.06.341.4353.2694.6912.168.857.3351.23108.5712.6916.0101.4045.62147.0213.38300323.96.349.3476.11125.4012.9210.077.4172.54149.
6、9513.7517.5132.2365.55197.7914.50350355.68.068.5890.58159.1613.8311.093.4887.41180.8914.4120.0165.5278.23243.7615.23377.09.081.68101.22182.9014.3612.0108.0297.87205.8914.8920.0176.0889.20265.2815.62400406.48.078.60119.70198.3114.5012.5121.42114.25235.6815.3922.2210.33102.92313.2716.25426.010.0102.59
7、129.46232.0515.2214.0142.25124.41266.6615.8822.0219.19114.61333.8016.57450457.08.088.58152.72241.3315.1014.2155.06144.28299.3416.3425.0266.33130.10396.4417.24480.011.0127.23164.75291.8816.1115.0172.01159.04331.0616.7624.0269.90146.57416.4717.55500508.010.0122.81187.04309.8516.2116.0194.14177.95372.0
8、917.2628.0331.45160.46491.9118.18530.012.0153.30201.39354.3916.9016.0202.82194.78397.6017.45 表3.0.2 LG级大直径焊接钢管不保温管道允许跨距表公称直径DN外径mm壁厚mm管自重kg/m水重kg/m总重kg/m允许跨距m400406.4878.60119.70198.3114.50450457.0888.58152.75241.3315.10500503.0898.65190.12288.7615.65600610.08118.77277.12395.8916.62700711.08138.7037
9、9.37518.0617.46800813.08158.82408.89657.7118.20900914.08178.75633.35812.0918.6410001016.08198.87785.40984.2718.8512001220.014001420.016001620.0 表3.0.3 STD级大直径焊接钢管不保温管道允许跨距表公称直径DN外径mm壁厚mm管自重kg/m水重kg/m总重kg/m允许跨距m400406.41097.76117.26215.0214.97450457.010110.24149.99260.2215.61500508.010122.81187.04309
10、.8516.21600610.010147.97273.04421.3717.62700711.010172.88375.01547.8918.16800813.010198.03493.90691.9318.97900914.010222.94627.72850.6619.6910001016.010248.09779.131027.2220.3512001220.010298.401130.971429.3820.9914001420.010347.731539.381887.1121.3016001620.010397.052010.622407.6721.54 表3.0.4 XS级大直
11、径焊接钢管不保温管道允许跨距表公称直径DN外径mm壁厚mm管自重kg/m水重kg/m总重kg/m允许跨距m400406.412116.72114.85231.5715.32450457.012131.69147.25278.9516.01500508.012146.79183.98330.7716.64600610.012176.97269.70446.6717.76700711.012206.86370.68577.5418.72800813.012237.05488.93725.9719.58900914.012266.94622.11889.0520.3510001016.012297.
12、12772.881070.0021.0512001220.012357.491123.451480.9422.3014001420.012416.681530.601947.2822.9216001620.012475.872000.582476.4523.22 表3.0.5 SCH20无缝钢管保温管道允许距表公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)209.305.783010.285.63401
13、1.405.4912.035.4112.665.355012.645.3513.515.2614.375.186014.015.2115.145.1116.275.025060.33.27015.505.0816.934.9718.364.848017.114.9618.884.7720.644.569018.864.7720.984.5223.114.3110020.734.5523.244.3025.764.0811025.664.0928.613.8812028.243.0931.643.692014.426.683015.516.564016.726.4417.456.3718.186
14、.305018.066.3119.056.2320.046.156019.536.1920.816.0922.096.007021.126.0722.705.9624.335.86(65)76.14.58022.845.9524.805.8326.765.729024.685.8427.035.7129.385.5910026.655.7329.415.5932.185.4211031.965.4435.175.1812034.665.2238.354.9613037.515.0241.724.76 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(
15、mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)2017.677.183018.847.074020.136.9520.946.8821.756.825021.556.8322.646.756023.106.7124.506.6225.916.527024.776.6026.526.4928.276.388088.94.58026.576.4828.696.3630.816.259028.496.3731.026.2433.556.1210030.546.2633.516.1236.
16、475.9911036.156.0039.595.7812038.955.8342.895.5513041.915.6246.385.3414045.025.4250.065.142026.018.123027.348.024028.797.9229.767.8530.737.795030.377.8131.667.736032.077.7233.727.6135.367.52100114.35.07033.917.6035.937.4937.967.398035.867.5038.307.3740.747.269037.947.3940.887.2643.727.1310040.157.29
17、43.527.1446.887.0111042.497.1846.367.0350.246.89 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)12049.366.9253.786.77100114.35.013052.526.8157.516.5714055.836.6761.426.362034.508.853035.998.764037.608.665039.348.5740.838
18、.4942.328.416041.428.4743.098.3744.978.287043.208.3745.508.2647.818.168045.318.2748.088.1550.848.03(125)139.75.09047.568.1750.808.0454.057.9110049.928.0753.697.9257.457.7911052.427.9756.737.8261.057.6712059.977.7164.837.5613063.297.6168.797.4314066.807.5072.957.2115070.477.3477.307.012047.329.693048
19、.989.61150168.35.64050.879.525052.709.4454.419,3656.139.296054.749.3556.899.2659.049.177056.919.2659.539.15 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)8059.219.1762.339.0565.458.949061.639.0765.288.9468.938.8210064.1
20、88.9868.398.8472.608.7111066.858.8971.668.7476.478.60150168.35.612075.088.6480.528.4913078.668.5484.758.3814082.408.4489.188.2715086.308.3493.808.1416090.358.2598.607.942073.4110.943075.3910.874077.5110.795079.7410.7281.8610.6583.9710.586082.1110.6484.7410.557084.6010.5687.7810.4690.9510.378087.2110
21、.4890.9710.3794.7310.26200219.16.39089.9510.4094.3210.2898.6910.1610092.8210.3297.8310.1811095.8110.24101.5010.09107.189.9512098.9310.15105.3210.00111.719.85130109.309.90116.439.75140113.449.81121.349.65150117.739.72126.439.55 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m
22、）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)200219.16.3160122.189.63131.719.45170126.299.54137.189.3620103.0211.9130105.3511.8440107.8011.7750110.3711.70112.9111.64115.4511.5760113.0811.63116.2211.5570115.9011.50119.6811.47123.4511.3880118.8011.49123.2911.3890121.9411.41127.0711.30132.2011
23、.19250273.06.3100125.1411.34131.0011.21136.8611.09110128.4711.27135.0911.13141.7110.99120131.9311.19139.3411.04146.7510.90130143.7410.95151.9710.80140148.3010.87157.3810.71150153.0210.78162.9910.62160157.8910.70168.7810.52170162.9310.62174.7610.42180168.1210.53180.9210.2420135.1812.68300323.96.33013
24、7.8212.6240140.5912.5650143.4912.49 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)60146.5112.43150.1312.35153.7512.2870149.6612.36153.9912.27158.3212.1980152.9312.29158.0112.1990156.3312.23162.1812.12168.0412.01100159.8
25、612.16166.5212.04173.1711.92110163.5112.09171.0011.96178.5011.83300323.96.3120167.2812.02175.6511.88184.0211.74130171.1911.95180.4511.80140175.2111.88185.4111.72195.6211.56150190.5311.64201.7011.47160195.8111.56207.9711.39170201.2411.48214.4311.23180206.8311.40221.0711.0620169.7513.61194.0814.143017
26、2.5913.55197.0514.09350355.68.040175.5613.49377.09.0200.1614.0450178.6613.43203.3913.9860181.8813.37185.7913.30189.7113.23206.7513.92210.8613.85214.9813.79 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)70185.2213.31189.
27、9013.23210.2313.86215.1413.7880188.7013.25194.1713.16199.6413.07213.8313.81219.5813.71225.3213.6390192.3013.19198.5913.08204.8912.98217.5713.75224.1713.64230.7713.54100196.0213.13203.1813.01210.3312.90221.4313.69228.9213.57236.4113.46110199.8713.06207.9112.93215.9612.81225.4113.62233.8213.50242.2413
28、.38120203.8413.00212.8112.86221.7712.73350355.68.0229.5213.56238.8913.43248.2613.30377.09.0130207.9512.93217.8612.78227.7812.64233.7513.50244.1113.36254.4613.22140212.1712.87223.0712.71233.9712.56238.1213.44249.4913.28260.8513.14150216.5212.80228.4412.63240.3512.47242.6013.38255.0213.21267.4413.0516
29、0233.9612.56246.9212.39260.7113.14274.2112.97170239.6412.48253.6812.31266.5613.07281.1712.89 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)180245.4812.41260.6212.22350355.68.0272.5712.99288.3112.81377.09.0190251.4712.33
30、267.7612.14278.7312.92295.6512.7320210.2814.29244.5715.0330213.4514.23247.8614.9840216.7414.18251.2714.9250220.1514.12254.8114.87400406.48.060223.6914.07228.0914.00232.4813.93426.010.0258.4714.82263.0514.75267.6314.6970227.3614.01232.6013.93262.2614.77267.7114.6980231.1513.95237.2613.86243.3713.7726
31、6.1714.71272.5314.62278.8914.5490235.0713.89242.0913.79249.1013.69270.2114.66277.5114.56284.8014.46100239.1113.83247.0713.72274.3814.60282.6414.49 续表3.0.5公称直径保温、保冷材料密度（kg/m3）200250300DN外径(mm)壁厚(mm)保温层厚（mm）管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)管重、充水重及保温重（kg/m）允许跨距(m)110423.2814.54252.2013.65261.1313.53278.6713.77287.9314.42297.2014.
