HG/T 20592  法兰盖 BL 80(B)-40 RFmÆ S=5 B=8160300RF20F B)-25FMRFrf1

20592BL80B-40RFmÆ S=5 B=8160300RF20F B)-25FMRFrf1

LWN25-300 RF Sch160 H

BL450-10RF

WN50(B)-40FMS=

LF/SE 80-150 RF Sch40S

WN 500-600 RF S=16

wn50-900 rf sch40=3 a=89=4 a105â…¡ rf4/132-2450-4.0/126-2.2

BL500-10RFG20615h C/R0F

WN250-600RF Sch403B)