HG/T 20592  法兰盖 BL 50(B)-100 RJh=

BL50(B)-100 RJh=

PL25(a)-6 RF

支座 B4

WN 2"-150 RF Sch40S

WN 600(B)-10 RF S=12

wn40-63t s=0RF S=3F

3 fm 2000-1.60 S=

wn 150(b)-25 fm s=

WN40-300 RF

DN 600-Ⅱ-14 90EL6RF0-=20.3RF50 RF Sch40S60fm110 Hs3�-1.6/45-p0Srf09 W5F0 RF Sch80S2=294 B=38;