HG/T 20592  法兰盖 BL 200-10 FF100-706101ch d=1

bl200-10ff100-706101ch d=1

BL 500-150 RF0-10rf85 C=20

WN2000(A)-16 RF/CH60s=4R

PL80-16RF b=/b)-6rfWN200(BH

wn25-25fmF0(0/631200-R-6-1�00-0.°

hg/t21521 wn600-16rf-10

WN40(A)-16 RF S=640/5

HG20615 WN100-150 RF T1美标F

a wn1000-150 rf l=40

WN 200-1