常用公称压力下管道壁厚选用表???????????????????????????????? （一）无缝碳钢管壁厚m m材料20#12CrMo15CrMo12Cr1MoVPNMPa≤1.62.546.41016204.0T10#Cr5Mo≤1.62.546.41016204.0T16Mn15MnV≤1.62.51022.52.533443.52.52.52.533443.52.52.51523333.54.54.5433333.54.54.542.52.5202.53333.5554333345542.52.5253333.54564.53333.54564.533323233.54.566533344.5675334033.53.53.54.56753.53.53.54578533503.53.53.545785.53.53.53.54.55.5895.5333.53.53.53.53.53.53.53.5444.54.5555.55.56667676879444579114.54.54.55.581012445791215455.581015184.54.5691218225.55.5811152226779131828347710142232388811162436891218264089142081015229121826654444.56898044457911100444.5681113DN1254457913151504.54.55.58101518200557913192225066811152428300779121826323507710142030364008811162234450881217500891319600910152246.41016202.52.533.53.52.5333.542.533.544.5333.54.5533.5455.533.545633.54.5673.545783.54.56894579114.5681113579121568111619791319248111522268121725309131928101411161218(二)无缝不锈钢管壁厚mmPNMPa1022222.531522.52.52.52.53.52022.52.52.52.53.5252.52.52.52.534322.52.52.52.534402.52.52.52.534502.53333.54.5652.53334802.5333.54.5100333.545DN125333.54.561503.53.54572003.53.54.5682503.54571030044.568113504569134004.5571014450500600材料1Cr18Ni9≤1.0Ti含Mo不锈1.6钢2.546.44.0T（三）焊接钢管壁厚mm材料焊接碳钢管（Q235-A20）PNMPa0.250.62005525055300563505640056450565005660067DN700678006790067100011001200140016006868787971011.62.50.250.6焊接不锈钢管11.62.5567333.545568333.54.5667933.545767933.54.56868103.53.54.56978113.5457979123.545.57108101344.56812811154579139121645710159134.56810144.561115111612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）公称DN15外径(D)A系列B系列21.318Sch5s1.6Sch10s2.1Sch20s2.6LG-Sch20-Sch30-STD-公称壁厚Sch402.9Sch60-XS-Sch803.6Sch100-Sch120-Sch140-Sch1804.5202532405065809010012515020025030035040045050055060065070075026.933.742.448.360.376.188.9101.6114.3139.7168.3219.1273323.9355.6406.445750855961066071176225323845577689-108133159219273325377426478529-630-720-1.61.61.61.61.622222.92.92.93.64444555.6---2.12.82.82.82.833333.43.4444.55555.65.66.3---2.63.23.23.23.63.6444556.36.36.3-----------------888888----3.24.54.54.5555.66.36.36.388810----------------7.188.810101112.5-------------------1010101010101010102.93.23.63.6455.65.65.96.37.188.8101114.216-17.5--------------1012.514.2162020-------------------13131313131313131344.5555.67.1888.8101112.5162025283032--------------16--------1112.514.217.52528303640----------------20252832364045-----5.66.36.37.18.8101112.514.21617.522.2283236404550-----17.522.225.83032-----17.522.222.228.512.517.5---8888008509009501000105011001150120081386491496510161067111811681219820-920-1020-1120-1220---------------------------888888888------------------101010101010101010------------------131313131313131313--------------------------------------------
常用公称压力下钢管壁厚选用表
