NB/T 47021  法兰 FM 500-1.0/009-4.B=.5/wp- d==586�F@A 1n=2406

1 FM 500-1.00094.B=.5/wp- d==586�F@A 1n=2406

WN500(B)-25 FM=1607,hms=4

wn32-2500 m s δch8S=480T6H=3S

PL300-40Mf10ch400-00 RF K=168.GFJr40SRFB25FMSc

so40 -300 Rf

wn400-150 rf s/�=500a2/u00e2/u0

PL 80(A)-16 RF d=127 n=4

wn300-1500 rj sch100/F0fu