HG/T 20615  法兰 PL 100-150 RF0mfmFpampampaRF S=3.5 f=1.6 r=

PL100-150rf0mfmFpampampaRF S=3.5 f=1.6 r=

lwn20-300 rf b=185.0rfS=

LWN 25-150 RF H=314 B=

Wn65(a)-16RF/M00δ=-4

DN1000-PN25 WN RF Ⅱ=73.15

wn25b-40gS=0=165R

WN350-150RF1.6 S=409

BL250(B)-63 G S=10h80 RF0 RF8840RF0

2 C1 hf=250 Ax=300 B=185 W=125 t

B