工 程 标 准管道的跨距标准号:BA3-3-10-96修改号: 日期 年 月 日中国石化集团北京设计院 共 59 页 第 60 页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Ⅱ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：[σ250℃]=110MPa（壁厚≤16mm） [σ250℃]=104MPa（壁厚=17～40mm） 弹性模数：E250℃=1.864×105MPa3 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3.0.23.0.3 STD级大直径焊接钢管不保温管道允许跨距见表3.0.33.0.4 XS级大直径焊接钢管不保温管道允许跨距见表3.0.43.0.5 SCH20无缝钢管保温管道允许跨距见表3.0.53.0.6 SCH40无缝钢管保温管道允许跨距见表3.0.63.0.7 SCH80无缝钢管保温管道允许跨距见表3.0.73.0.8 LG级大直径焊接钢管保温管道允许跨距见表3.0.83.0.9 STD级大直径焊接钢管保温管道允许跨距见表3.0.93.0.10 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m5060.33.24.512.286.796.254.05.552.157.706.345.67.551.899.456.42(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)139.75.016.6113.2129.829.186.320.7212.0933.419.3910.031.9811.2543.249.68150168.35.622.4719.3841.8510.007.128.2218.6546.8810.2411.042.6716.8159.4810.58200219.16.333.0633.4966.5511.218.041.6532.4074.0511.5212.563.6829.5993.2811.97250273.06.341.4353.2694.6912.168.857.3351.23108.5712.6916.0101.4045.62147.0213.38300323.96.349.3476.11125.4012.9210.077.4172.54149.9513.7517.5132.2365.55197.7914.50350355.68.068.5890.58159.1613.8311.093.4887.41180.8914.4120.0165.5278.23243.7615.23377.09.081.68101.22182.9014.3612.0108.0297.87205.8914.8920.0176.0889.20265.2815.62400406.48.078.60119.70198.3114.5012.5121.42114.25235.6815.3922.2210.33102.92313.2716.25426.010.0102.59129.46232.0515.2214.0142.25124.41266.6615.8822.0219.19114.61333.8016.57450457.08.088.58152.72241.3315.1014.2155.06144.28299.3416.3425.0266.33130.10396.4417.24480.011.0127.23164.75291.8816.1115.0172.01159.04331.0616.7624.0269.90146.57416.4717.55500508.010.0122.81187.04309.8516.2116.0194.14177.95372.0917.2628.0331.45160.46491.9118.18530.012.0153.30201.39354.3916.9016.0202.82194.78397.6017.45 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m400406.4878.60119.70198.3114.50450457.0888.58152.75241.3315.10500503.0898.65190.12288.7615.65600610.08118.77277.12395.8916.62700711.08138.70379.37518.0617.46800813.08158.82408.89657.7118.20900914.08178.75633.35812.0918.6410001016.08198.87785.40984.2718.8512001220.014001420.016001620.0 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m400406.41097.76117.26215.0214.97450457.010110.24149.99260.2215.61500508.010122.81187.04309.8516.21600610.010147.97273.04421.3717.62700711.010172.88375.01547.8918.16800813.010198.03493.90691.9318.97900914.010222.94627.72850.6619.6910001016.010248.09779.131027.2220.3512001220.010298.401130.971429.3820.9914001420.010347.731539.381887.1121.3016001620.010397.052010.622407.6721.54 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m400406.412116.72114.85231.5715.32450457.012131.69147.25278.9516.01500508.012146.79183.98330.7716.64600610.012176.97269.70446.6717.76700711.012206.86370.68577.5418.72800813.012237.05488.93725.9719.58900914.012266.94622.11889.0520.3510001016.012297.12772.881070.0021.0512001220.012357.491123.451480.9422.3014001420.012416.681530.601947.2822.9216001620.012475.872000.582476.4523.22 表3.0.5 SCH20无缝钢管保温管道允许距表公称。