HG/T 20592  法兰盖 BL 15(B)-16 RF36b)Fu00c2/30

bl15(b)-16rf36b)Fu00c2/30

WN 380-150 RF S019 SO150-1SSch40.52R023Sc2@F-1504Aampamp��

WN 65(A)-40 RF S=360fC

wn 500-300rf0mpampam51.5 RJF2F

WN 80(B)-16 RF S=4.5

A WN 28"-150 RF B=16

wn50-25rf s=4

SO50-150 RF

so100(a)-300RF B=1

BL 21547-16 RF