HG/T 20592  法兰 WN 300(B)-25 RF S=17.5RFRF R-1.0 S=009 BL2084-1

WN 300(B)-25 RF S=17.5RFRF R-1.0 S=009 BL2084-1

WN15-150 RF0-200-16

bl350-16rfam

pl300(b)-16rf b=4 f1=2.5 D=51

so50-300 g schR

pl80-25 rf/s

20592 WN40B-100 RF.0./6 RF rf00-43

WN250(B)-160RF S=1

DN 65-Sch10S 45EL71500

PL10-16FF5-R005 �