HG/T 20592  法兰盖 BL 350-10 RF6 RF S=4m5FS=2.620)-1/f-1.

BL350-10RF6 RF S=4m5FS=2.620)-1/f-1.

WN40-300RF0 RF ScB)-rf�0=My=50 d smf RF B

BII3100)- b=65-3F3

wn100-150rf,sch40s

so200(B)-16 RF

23 FM 450-4.0/46-115 δ0=80-4.0hg20615 wn400-600r0rDb=5F=0244-RJ100

wn350-150 rfb=

WN 3"-300 RF S=S=8FHG

法兰