工艺管道管壁厚及等级对照表无缝钢管焊接钢管镀锌焊管管道等级所用材质SCH20SCH30SCH40SCH80SCH160XXSSCH20SCH40SCH40加厚SCH80加厚DN15Ø22---3.04.05.0DN15Ø21.3-2.8-3.51.6A120#DN20Ø27---3.04.07.0DN20Ø26.9-2.8-3.51.6B1Q235B+镀锌DN25Ø34---3.54.59.0DN25Ø33.7-3.2-4.01.6B2焊管Q235BDN32Ø42---3.55.0-DN32Ø42.4-3.5-4.02.5A120#DN40Ø48---4.05.010.0DN40Ø48.3-3.5-4.52.5A220#DN50Ø603.5-4.05.0--DN50Ø60.3-3.8-4.52.5L11Cr18Ni9DN65Ø764.5-5.06.0--DN65Ø76.14.0-4.5-2.5K100Cr17Ni14Mo2DN80Ø894.5-5.56.5--DN80Ø88.94.0-5.0-4.0A120#DN100Ø1145.0-6.07.0--DN100Ø114.3--5.0-4.0A220#DN125Ø1405.0-6.58.0--DN125Ø139.74.0-5.5-4.0C115MoRDN150Ø1685.56.57.09.5-28.0DN150Ø168.34.5-6.0-4.0L11Cr18Ni9DN200Ø2196.57.08.010.0-35.0------4.0K100Cr17Ni14Mo2DN250Ø2736.58.09.513.0-40.0------6.4K100Ccr17Ni14Mo2DN300Ø3256.58.510.014.0--------10.0A120GDN350Ø3778.09.511.0---------42.0A120#DN400Ø4268.09.5----------DN450Ø4808.011.0----------DN500Ø5309.513.0----------管径壁厚管表号管表号壁厚管径第2页共2页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共2页DN600Ø6309.514.0----------
