HG/T 20592  法兰盖 BL 80(B)-25 RF0 RF)二500.5/80-5rf30=663 RF1-1F=300c3/uSch80S�1

BL 80(B)-25 RF0 RF)二500.5/80-5rf30=663 RF1-1F=300c3/uSch80S�1

pl150(b)-6 rf b-1 l RF S=30 S0 RF=5150-

wn250-900rf FF B=336.6RF00-1.0ã23 C=28 d=2

so200(b)-150ff c=592Sc

WN150-150GTch40 Sch40504s�

WN4"-300 RF SCH160

so200-150 rf r==24)-40F