NB/T 47022  法兰 FM 800-6.4 δ0=14RF@FS=5020)-1

2 FM 800-6.4 δ0=14RF@FS=5020)-1

20592 WN20(B)-16 RF

20592 bl400-16rf

wn100(a)-100fm60

20615 WN20-600RF

20592BL450-40RF

21520PL250(B)-6RF

wn25-150 rf b=24.3

SO 2"-150 RF

SO 450(B)-10 RF�s=6 S=0h20=4.(B)600-1.6/forum.htmF-2009ch406RFRF60R6 RF D