规格
DN-公称直径Ф-外径
DN15-ф22mm,DN20-ф27mm DN25-ф34mm,DN32-ф42mm
DN40-ф48mm,DN50-ф60mm DN65-ф76(73)mm,DN80-ф89mm
DN100-ф114mm,DN125-ф140mm DN150-ф168mm,DN200-ф219mm
DN250-ф273mm,DN300-ф324mm DN350-ф360mm,DN400-ф406mm
DN450-ф457mm,DN500-ф508mm DN600-ф610mm