常用公称压力下管道壁厚选用表
???????????????????????????????? （一）无缝碳钢管壁厚??? ????????????????????????????m mDN102.52.52.533443.52.52.52.533443.52.52.52.52.533.53.51533333.54.54.5433333.54.54.542.52.52.5333.542033333.5554333345542.52.52.533.544.5253333.54564.53333.54564.533333.54.55323233.54.566533344.56753333.5455.5403.53.53.53.54.56753.53.53.5457853333.5456503.53.53.545785.53.53.53.54.55.5895.53333.54.5673.53.53.545783.53.53.54.56893.53.54579113.53.54.56811134457912154.54.56811161955791319245.55.581115222666812172530679131928671014681116791218444579114.54.54.55.581012445791215455.581015184.54.5691218225.55.5811152226779131828347710142232388811162436891218264089142081015229121826654444.56898044457911100444.56811131254457913151504.54.55.581015182005579131922250668111524283007791218263235077101420303640088111622344508812175008913196009101522材料2012CrMo15CrMo12Cr1MoVPNMPa≤1.62.546.41016204.0T10Cr5Mo≤1.62.546.41016204.0T16Mn15MnV≤1.62.546.4101620(二)无缝不锈钢管壁厚????????????????????????? ?mm
PN材料MPa1Cr18Ni9Ti含Mo不锈钢≤1.01.62.546.44.0T1022222.531522.52.52.52.53.52022.52.52.52.53.5252.52.52.52.534322.52.52.52.534402.52.52.52.534502.53333.54.5652.53334802.5333.54.5100333.545125333.54.561503.53.54572003.53.54.5682503.54571030044.568113504569134004.5571014450500600DN材料焊接碳钢管（Q235A20）PNMPa0.250.611.62.50.250.620055567333.54525055568333.54.563005667933.54573505667933.54.5684005668103.53.54.569（三）焊接钢管壁厚????????????????? ??????????mmDN4505678113.545795005679123.545.5710600678101344.568127006781115457913800679121645710154.5684.5690067913100068101411006811151200781116140079121600710焊接不锈钢管11.62.5钢管壁厚等级表示方法
钢管的壁厚等级系列的表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）公外径(D)公称壁厚称DNSchSchSchSchSchSchSchA系列B系列LGSTD5s10s20s203040601521.3181.62.12.6----2.9-2026.9251.62.12.6----2.9-2533.7321.62.83.2----3.2-3242.4381.62.83.2----3.6-4048.3451.62.83.2----3.6-5060.3571.62.83.6-3.2--4-6576.176233.6-4.5--5-8088.989234-4.5--5.6-90101.6-234-4.5--5.6-100114.3108234-5--5.9-125139.71332.93.45-5--6.3-150168.31592.93.45-5.6--7.1-200219.12192.946.3-6.37.1-8102502732733.646.3-6.38-8.812.5300323.932544.56.3-6.38.8-1014.2350355.637745-8810101116400406.442645-88101012.517.545045747845-88111014.22050050852955.681012.5101620550559-55.68--10--6006106305.66.38--1017.5-650660----8--10--700711720---8--10--750762----8--10--800813820---8--10--850864----8--10--900914920---8--10--950965----8--10--100010161020---8--10--10501067----8--10--110011181120---8--10--11501168----8--10--120012191220---8--10--XS---------------131313131313131313131313131313131313Sch803.644.5555.67.1888.8101112.51617.52022.225283032------------Sch100------------1617.522.225.828.53032--------------Sch120---------1112.514.217.522.22528303640--------------Sch140------------20252832364045--------------Sch1804.55.66.36.37.18.8101112.514.21617.522.2283236404550-------------
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