公称通径和钢管外径公称通径DN钢管外径AB1017.2141521.3182026.9252533.7323242.438公称通径DN钢管外径AB100114.3108125139.7133150168.3159200219.1219250273273300323.9325公称通径DN钢管外径AB600610630700711720800813820900914920100010161020120012191220PN25.0MPa(250bar)管法兰适用的钢管外径系列公称通径DN钢管外径AB10~65同前表80101.6102100127127125152.4159150177.81804048.3455060.3576576.1768088.989350355.6377400406.4426450457480500508530140014221420160016261620180018291820200020322020径系列
200244.5—250298.5—