表一：壁厚理论重量市场吨价单位价格延米表面30保温层长度表面积保温层体积管道支架(mm)(mm)(kg/m) (元/t)(元/m)平米/延米100M体积米 平米 立方米kgDN10172.250.8239003.190.0530.000.000DN15 21.3 2.751.2639004.910.0670.000.000DN20 26.82.751.6339006.360.0840.5703728.80313.79 21.2541553.666667DN25 33.53.252.4239009.460.1050.61035.643.750.21714.85DN32 42.33.253.13390012.210.1330.6700.000.0000DN40483.503.84390014.980.1510.74072.0010.850.53324DN50603.504.88390019.020.1880.8600.000.0000DN70 75.53.756.64390025.880.2371.010194.4046.091.963 55.54285714DN80 88.54.008.34390032.510.2781.1700.000.0000DN1001144.0010.85390042.320.3581.3500.000.0000DN125 1404.5015.04390058.640.4401.6000.000.0000DN150 1654.5017.81390069.460.5181.8400.000.0000374.4723.9681648.060理论质量计算公式：焊接钢管：P=0.02466S（D-S）镀锌焊接钢管：P=C[0.02466S（D-S）](理论质量均系按相对密度7.85计算)公称直径外径低压流体输送用焊接、普通焊接钢管合 计表二：壁厚1理论重量市场吨价单位价格壁厚2理论重量市场吨价单位价格(mm)(mm)(kg/m) (元/t)(元/m)(mm)(kg/m)(元/t)(元/m)DN80893.507.38390028.784.008.38390032.70DN1001084.0010.26390040.014.5011.49390044.79DN1251334.0012.72390049.634.5014.26390055.61DN1501594.5017.14390066.865.0018.99390074.05DN2002196.0031.524600144.976.5034.063900132.84DN2502736.5042.723900166.607.0045.923900179.08DN3003257.5058.723900229.018.0062.543900243.90DN3503779.0081.673900318.539.5086.093900335.77DN4004269.0092.553900360.949.5097.573900380.54DN4504809.00104.533900407.689.50110.223900429.87DN5005309.00115.633900450.969.50121.943900475.56DN6006309.00137.823900537.529.50145.363900566.92一般常用热轧无缝无缝钢管无缝钢管公称直径外径壁厚理论重量市场吨价单位价格延米表面30保温层长度表面积保温层体积壁厚理论重量(mm)(mm)(kg/m)(元/t)(元/m)平米/延米100M体积米 平米立方米(mm)(kg/m)DN10172.250.8749004.250.0530.000.0002.750.97DN1521.3 2.751.3349006.530.0670.000.0003.251.45DN2026.8 2.751.7349008.470.0840.5400.000.0003.52.01DN25 33.5 3.252.57490012.590.1050.6100.000.00042.91DN32 42.3 3.253.32490016.260.1330...
