HG/T 20592  法兰盖 BL 80(B)-6 RF d=89FrfRF10��

bl80(b)-6rf d=89FrfRF10��

PL 100(B)-16 RF b=

BI 1000F00F Sc��-2.5RJ B=1

B WN1500-300RF S=20

BI 800 bRFRFf10RF=-0-10 90E0-=S=6S b=-11-R

BII30000Mf=3, NB/F

PL 100(B)-16 RF

BII 2800Frfam

47065.4 B1FSCO300(B0 RF RF S=4.78RJle/�h�ScF&@RF 65AS