序号12345678910111213141516171819202122232425公称直径（mm）管道外径（mm）2227344248607689114140165219273325377426478529630720820920102011201220单 位数 量每延米面积（m2）0.06910.08480.10680.13190.15070.18840.23860.27950.35800.43960.51810.68770.85721.02051.18381.33761.50091.66111.97822.26082.57482.88883.20283.51683.8308面积合计（m2）15202532405070801001251502002503003504004505006007008009001000110012001/23/411,1/41,1/222,1/23456810121416182024283236404448mmmmmmmmmmmmmmmmmmmmmmmmm序号262728293031公称直径（mm）管道外径（mm）132014201524162018202020单 位数 量每延米面积（m2）4.14484.45884.78545.08685.71486.3428面积合计（m2）130014001500160018002000525660mmmmmm合 计
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