NB/T 47023  法兰 C-RF 1400-1.6/20РһТҷ0=10

3 CRF 1400-1.620РһТҷ0=10

lwn 50-300 rf b=52 h=2180 rf=.6 φ32F

SW15-150 RFF RF40TF6RF/6

LWN 25-1500 RJ

WN25(B)-16 RF

WN 25-900 RF S=102.5ï¿80)(B)-16 RF SCH4M9B61

DN15-PN16 PL RF Ⅱ

WN 3"-150 RF Sch40

Js wn350b-16rfF=52 H=21F S=6M=1=62TG

S