压力管道标准(DN对照)规格(大外径系列):DN公称直径 ;外径DN15-22mm,DN20-27mm;DN2534mm,DN32-42mmDN4048mm,DN5060mm;DN6576(73)mm,DN8089mmDN100-114mm,DN125-140mm;DN150-168mm,DN200-219mmDN250-273mm,DN300-324mm;DN350360mm,DN400-406mmDN450457mm,DN500508mm;DN600610mm规格(小外径系列):DN公称直径 ;外径DN15-18mm,DN2025mm;DN25-32mm,DN3238mmDN40-45mm,DN5057mm;DN6573mm,DN80-89mmDN100-108mm,DN125133mm;DN150159mm,DN200-219mmDN250273mm,DN300325mm;DN350-377mm,DN400-426mmDN450480mm,DN500530mm;DN600-630mm