钢板卷管的理论重量计算公式

直径mm3 3.5 4 4.5 5 5.566.57 89101112说明: 18~22250.170.180.200.210.221、表中所列重量均为等径三通重量270.180.200.210.230.24     二级变径按0.94计算,320.300.330.350.380.400.420.44     三级变径按0.91计算,340.320.350.370.400.430.450.48     四级变径按0.89计算. 380.460.510.550.590.630.670.71420.510.560.610.660.700.740.780.830.862、计算公式： 450.670.730.800.860.920.971.031.081.14480.710.780.850.910.981.041.101.161.2251570.951.051.141.231.321.411.501.581.661.821.972.11601.001.101.201.291.391.481.571.661.751.922.082.23所有三通重量均为理论重量，仅供参 731.461.611.751.902.042.182.322.462.592.853.103.343.573.79761.511.661.821.972.122.262.412.552.692.963.223.483.723.9513 14 15 16 1718 892.002.212.422.622.823.023.223.413.603.984.344.695.035.375.696.006.306.591083.003.313.633.944.254.554.855.155.446.026.597.147.688.218.739.239.7210.210.7 1143.143.473.804.124.454.775.085.405.716.326.917.508.078.639.189.7110.210.711.211.71271334.364.825.285.746.196.647.097.537.978.849.6910.511.312.212.913.714.515.216.016.71404.545.035.515.996.466.937.407.868.329.2310.111.011.912.713.614.415.216.016.717.51595.996.647.287.918.549.179.7910.411.012.213.414.615.816.918.119.220.321.322.423.41686.26 6.93 7.60 8.278.939.5910.210.911.512.814.115.316.517.718.920.121.322.423.524.621913.414.515.516.617.718.720.822.925.027.029.031.033.035.036.938.840.7273 20.2 21.8 23.5 25.1 26.7 28.4 31.6 34.8 37.9 41.1 44.2 47.3 50.3 53.4 56.4 59.4 62.4 三 通 理 论 重 量 表              kg/只 壁  厚   mm0.02466*(S+1.5)(D-S-1.5)(3
32528.330.632.9 35.237.539.844.348.853.357.762.266.670.975.379.683.888.135542.445.147.953.458.864.269.675.080.385.690.896.110110637744.347.250.155.861.567.272.978.584.189.695.110110611140652.555.959.3 66.172.979.786.493.099.710611311912613242668.575.582.589.596.410311011712413113745783.992.510111011812713514315216016848087.095.9105114123131140149157166175508104115125136146157167178188199209529107118129140151162172183194205215610139154168183197211225239253267281630143157172187201216230245259274288660176194212231249267285302320338356711198219240260280301321341361381402720200221242262283303324344365385405762228252276299323346370393416440463813261288315342369395422449475502528820262289317344371398425451478505532864295326356387417447478508538568598914 331365400434468502536570604638672
重量均为等径三通重量。 D 式中 2 S=壁厚mmD=外径mmC=三通主管长度mm（参见有关标准） 论重量，仅供参考。（需按实际管厚计算） 1920222425262830323436 3840 18.224.525.527.425.726.828.942.644.548.151.765.3 68.274.0 79.6 82.485.290.696.0 壁              厚            mm         kg/只 1.5)(3C- )/1000
92.396.5105113117121129137144152112117127137142146156166175184194203211.58921117122133143149154164174184194204213222.66075139145158170177183195207219231243254265.59427144151164177183190202215228240252264276.23241177185201217225233249265280295311326340.38745183192209225234242259275291307323339354.06889219229250270280290309329348368387406424.41877226236257278288299319339360380399419438.28596295309337364378391418445472498525551576.56104302316345373387401429456483511538564590.82198373391426461478495530564598631665698731.07656422441481521540560599637676714752790827.33022425446486525545565604643682721759797835.32725486509555600623646691735780824868912955.6088355558163368671273878984089294299310431093.125655858563769071674279484689794899910501100.255362865871777780683689495310111068112611831239.88057067398068739069391005107111361201 126613311394.7219

今日开市，山东市场Q345B卷管价格出现涨跌互现，截止到发稿时，市场上57*3.5mm山东价格为4900元/吨，108*4.5mm攀成钢价格为4700元/吨，219*6mm山东总厂价格为4700元/吨，325*8mm山东总厂价格为4700元/吨；市场成交差。

今日开市，市场上经销商对Q345B卷管报价大体维持稳定，成交时有50元/吨的优惠，市场上主导资源攀成钢报价仍能维持在4650-4700元/吨不等，当地主流管厂订单不满，可仍面临亏损压力，所以也未对Q345B卷管进行下调，所以近期市场订货上明显有较大下滑。当前众多外地资源仍陆续充斥山东市场，在报价上要比攀成钢资源低100-200元/吨在出售，可近期持续低迷的市场成交，不少贸易商仍然对外地资源加大优惠幅度，希望尽早回款，减少后期经营压力。可从现货成交反映来看，当前市场成交依旧十分疲软，普遍中大户日均出货量也只有三五十吨左右。大多经销商无意打款备货。预计后期山东市场上Q345B卷管报价仍弱势盘整为主。