钢管标号sch80表示什么意思？SCH20-SCH40-SCH80-SCH160（附对照表）表示英制管壁厚系列：Sch.2O全称：Schedule20Sch.lOs-带s的系列为不锈钢专用，碳钢不用。举个例子：2sch.lOs表示2”接管的壁厚为2.9mm,材质为不锈钢；2sch.40表示2”接管的壁厚为4.0mm。顺便再说一下钢管壁厚的表示方法：钢管壁厚表示方法有管子表号、钢管壁厚尺寸和管子重量三种方法1）是以管子表号Sch表示壁厚。管子表号是管子设计压力与设计温度下材料许用应力的比值乘以1000,并经圆整后的数值。即：Sch=P/otxlOOOANSIB36.10壁厚等级：SchlO、Sch20、Sch30、Sch40、Sch60、Sch80、SchlOO、Sch120、Sch140、Sch160十个等级；ANSIB36.19壁厚等级：Sch5s、Sch10s、Sch40s、Sch80s四个等级；2）以钢管壁厚尺寸表示中国、ISO、日本部分钢管标准采用3）是以管子重量表示管壁厚度,它将管子壁厚分为三种：a.标准重量管，以STD表示b加厚管，以XS表示c.特厚管，以XXS表示。对于DN250mn的管子，Sch40相当于STD,DNv200mm的管子,Sch80相当于XS。无缝钢管尺寸对照表（美标ANSI-日标JIS-德标DIN-英标BS-韩标KS）最新最全钢管英寸对照表中外金属材料牌号对照及标准ASME/ANSI的标准尺寸（无缝钢管）Unit:mmB16.9B16.28B36.10标称管径（NPS）夕卜直径公称壁厚Sch5sSCH10SSch20Sch30Sch40STDSch80XSSch160XXS81/413.70.541.651.852.242.243.023.02103/817.10.6751.651.852.312.313.203.20151/221.30.841.652.112.412.772.773.733.734.787.47203/426.71.051.652.112.412.872.873.913.915.567.8225133.41.321.652.772.903.383.384.554.556.359.09321.1/442.21.661.652.772.973.563.564.854.856.359.70401.1/248.31.901.652.773.183.683.685.085.087.1410.1550260.32.381.652.773.183.913.915.545.548.7411.07652.1/273.02.882.113.054.785.165.167.017.019.5314.0280388.93.502.113.054.785.495.497.627.6211.1315.24903.1/2101.64.002.113.054.785.745.748.088.081004114.34.502.113.054.786.026.028.568.5613.4917.121255141.35.562.773.40-6.556.559.539.5315.8819.051506168.36.622.773.407.117.1110.9710.9718.2621.962008219.18.622.773.766.357.048.188.1812.7012.7023.0122.2325010273.010.753.404.196.357.809.279.2715.0912.7028.5825.4030012323.812.753.964.576.358.3810.139.5317.4812.7033.3225.4035014355.6143.964.787.929.5311.139.5319.0512.7035.7140016406.4164.194.787.929.5312.709.5321.4412.7040.49-145018457184.194.787.9211.1314.279.5323.8312.7045.2450010508204.785.549.5312.7015.099.5326.1912.7050.0155022559224.785.549.5312.709.5328.5812.7053.9860024610245.546.359.5314.2717.489.5330.9612.7059.54650*26660269.5312.70700*2871128-9.5312.70750*30762309.5312.70800*3281332-9.5312.70