GB标准钢管壁厚等级Sch方法

Sheet1 GB钢管壁厚等级Sch方法 的壁厚等级系列的示方法在不同标准中所表示的方法各不相同。主要有三种表示方法： 1）以管子表号（Sch）表示： 对于碳钢管壁厚有：Sch10、20、30、40、60、80、100、120、140、160等10个等级（若数字后面加S，表示不锈钢管）； 对于不锈钢壁厚系列有：5S、10S、40S、80S四个等级 2）以管子重量表示，如STD(标准重量)，XS(加厚管)，XXS(特厚管) 3）以钢管壁厚尺寸表示，即“管外径×壁厚”，如φ89X4 钢管壁厚分级表（GB标准）   公称直径DN 外径(D) 公称壁厚 A系列 B系列 Sch5s Sch10s Sch20s LG Sch20 Sch30 STD Sch40 Sch60 XS Sch80 Sch100 Sch120 Sch140 Sch180 152025 21.326.933.7 182532 1.61.61.6 2.12.12.8 2.62.63.2 --- --- --- --- 2.92.93.2 --- --- 3.64.04.5 --- --- --- 4.55.66.3 324050 42.448.360.3 384557 1.61.61.6 2.82.82.8 3.23.23.6 --- --3.2 --- --- 3.63.64.0 --- --- 5.05.05.6 --- --- --- 6.37.18.8 658090 76.188.9101.6 7689- 2.02.02.0 3.03.03.0 3.64.04.0 --- 4.54.54.5 --- --- 5.05.65.6 --- --- 7.18.08.0 --- --- --- 10.011.012.5 100125150 114.3139.7168.3 108133159 2.02.92.9 3.03.43.4 4.05.05.0 --- 5.05.05.6 --- --- 5.96.37.1 --- --- 8.810.011.0 --- 11.012.514.2 --- 14.216.017.5 200250300 219.1273.0323.9 219273325 2.93.64.0 4.04.04.5 6.36.36.3 --- 6.36.36.3 7.18.08.8 --- 8.08.810.0 10.012.514.2 --- 12.516.017.5 16.017.522.2 17.522.225.0 20.025.028.0 22.228.032.0 350400450500550600 355.6406.4457.0508.0559610 377426478529-630 4.04.04.05.05.05.6 5.05.05.05.65.66.3 --- 8.08.08.08.08.08.0 8.08.08.010.0-- 10.010.011.012.5-- 10.010.010.010.010.010.0 11.012.514.216.0-17.5 16.017.520.020.0-- 13.013.013.013.013.013.0 20.022.225.028.030.032.0 25.828.530.032.0-- 28.030.036.040.0-- 32.036.040.045.0-- 36.040.045.050.0-- 650700750 660711762 -720- --- --- --- 8.08.08.0 --- --- 10.010.010.0 --- --- 13.013.013.0 --- --- --- --- --- 800850900 813864914 820-920 --- --- --- 8.08.08.0 --- --- 10.010.010.0 --- --- 13.013.013.0 --- --- --- --- --- 95010001050 96510161067 -1020- --- --- --- 8.08.08.0 --- --- 10.010.010.0 --- --- 13.013.013.0 --- --- --- --- --- 110011501200 111811681219 1120-1220 --- --- --- 8.08.08.0 --- --- 10.010.010.0 --- --- 13.013.013.0 --- --- --- --- -Sheet2 Sheet3