HG/T 20592  法兰 WN 900(B)-10 RF S=2

WN900(B)-10RF S=2

WN 250(B)-16 RF S=6

WN15-150 RF SCH80300-Rampampampampampampampampampampampampampamp

WN60-150 RF Sch401@p Sch80�FF S=5.52-16P

wn250-150rfrf SCh40s

SO 3/4"-150 FFsrff10m4- rf s

BL500-150 RF sch80

PL 80(B)-25 RF

PL450(B)-16 RF