HG/T 20592  法兰 WN 80(B)-16 RF4074

WN80(B)-16 RF4074

WN80(B)-16 RF6506

WN600(B)-25 RF S=1060S11

BII 31855

so100(B)-16 RF=1¤Â

WN25(B)-300FF d=1

3 B4648

BL200-10RFh3917

DN40-PN160 WN T i

bii 5769¿½@RF R)-&eSch8F1.5O4f50-00ch40F5 R05/2F6000SC0ampammp/u0FFRF0 î52-16 RF7987�ta5 RJ0SM;