HG/T 20592  法兰 WN 200-16 RF S=7100S)-10-

WN200-16RF S=7100S)-10-

WN150-25 RF S=10/ schя�

2 C221

WN 1200(B)-6 FF S=10

BL250(B)-25 FF ะآ à¸°آ

WN 150-600 RF0=4.в

WN200-300 RF Sch4080.567 S=am6

WN100-150 RF S=Rc6�000-14RF IFM CRFRFmpampa-

PL 200(B)-10 RF2 RFsch8.5RJ S=20b)-16