2019管道保温数量换算表20厚25厚计算后计算后管外径m3/100mm2/100m实际米数立方数平方数m3/100mm2/100m实际米数φ140.2320.16000.3323.47φ180.2521.42000.3524.72φ250.323.62000.4126.92φ320.3425.82000.4629.12φ380.3827.71000.5231.01φ450.4129.91000.5833.21φ570.5133.66000.6736.96φ合计00φ76φ89φ108φ133φ合计φ159φ219φ273φ325φ377φ合计0.630.710.84139.7243.7149.6757.5200000000000000000000000.830.931.081.2942.9247.0152.9760.821.171.561.92.2465.6984.83101.49117.811.51.982.432.8468.9987.82104.78121.11计算后立方数0000000000000000000计算后平方数0000000000000000000