螺旋钢管的理论重量.doc

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1、钢管理论重量   钢管的规格一般以钢管的外径D、内径和壁厚S的毫米（mm）数标定。   钢管尺寸分不定尺和定尺：不定尺（通常长度）凡产品尺寸（长度或宽度），在标准规定范围内，而又不要求固定尺寸的叫不定尺。      定尺按订货要求切成固定尺寸的称为定尺。按定尺长度交货时，所交金属材料必须具有需方在订货合同中指定的长度。因此规定了允许有偏差。567891011121314151618D219 26.8832.0237.1042.13         D245 30.0935.8641.5947.26         D273 33.5540.0146.425

2、2.7859.1065.36       D325 39.9647.7055.4063.0470.6478.18       D377 46.3755.4063.8773.3082.1891.01       D426 52.4162.6572.3382.9793.05102.59113.08123.02     D478 58.8270.3481.8193.23104.60115.92127.19138.41     D529 65.1177.8990.61103.29115.92128.49141.02153.50     D630 92.83108.

3、05123.22138.33153.40168.42183.39198.31213.18   D720 106.15123.59140.97158.31175.60192.84210.02227.16244.25   D820 120.95140.85160.70180.50200.26219.96239.62259.22278.78   D920 158.10180.43202.70224.92247.09269.21291.28313.31335.28357.20 D1020  200.16224.89249.58274.22298.81323.34 

4、347.82372.27396.66445.29D1120  219.89247.09274.24301.35328.40355.40382.36409.26436.12489.69D1220  239.62269.29298.9328.47357.99387.46 416.88446.26475.58534.08D1320   219.48323.57355.60387.59419.52451.41483.25515.04578.47D1420   313.68348.23382.73417.18451.58 485.94520.24554.50622.

5、86D1520   335.87372.89409.86446.77483.64520.46557.23593.95667.25D1620   358.08397.55436.98476.37515.70554.99594.23633.41711.64D1820    446.87491.24535.56579.82624.04668.21712.33800.42D1920    471.53518.37565.15611.88658.57705.20751.79844.81D2020    496.20545.49594.74643.94693.0974

6、2.19791.25889.20 567891011121314151618　注：绿色部分是钢管的生产范围         5-18mm是钢管壁厚，219-2020mm是钢管外径