HG/T 20592  法兰 WN 20(B)-63 FF/6-1952009w650 RF S= SF-10

WN20(b)-63FF/6-1952009w650 RF S= SF-10

wn32-16rf=/0-11/f/0 RF201)-16R=3 d=78wBh80SF=760)25RFSCFsch

PL25(B)-16 fF BB=61=

2 CG 1000-0.2520δ1=

20592 wn80b-25 rf0c)-10RF RF b2416 RCchker=j

BL800-300 RF=805 D70-a)-

wn80(b)-40 m s=46R.5h4b=.615mF-FM1-16R