HG/T 20592  法兰 WN 40-16 RF S=18.34.1 S=300-sch80 RF S/C

WN40-16RF S=18.34.1 S=300-sch80 RF S/C

bl25-40ff500-1.697

WN50(B)-16 RFmp13fs=5.5FF¡4rf S=6 SCH8

WN 20(B)-16 RF S=5

47023 m700-2.5 Ãå�

WN 150-300 RF

IF40(B)-40FFFb)-1.5RF15-2500rj=00Sch12=-300 RF640.1/u00

WN25-900RJ S=3.h100=108d=34

SW 3&quo