NB/T 47021  法兰 C-FM 500-1.0/10 RF b=10

47021 c-fm500- 1.00/10 RF b=10

WN 150-300 RF S=8b1=58 d=155RF

wn200-300 rf sch80 a=

PL150(B)-16 RF D=275 B=160.5

47023-rf300-4.050 RC=28

WN15-2500 RJ B=12/m6FM2600mfm25(B)-16-2.500-000hgt20615

PL250-10 RF�00y=´1=1

WN 20-600 RJ

wn100-150 rf s=3.65