HG/T 20592  法兰 PL 20(B)-10 FF b1=B)-10 RF032100-1.010 RF

pl20(b)-10 ff b1=B)-10 RF032100-1.010 RF

pl20(a)-6rfF25 RF06159o500(b)-16rf62 d=86/u0.0m��77.5

3 RF 1600-1.0 δ0=8

WN80-16RF040G/20592L50hgcad.c.2pampampa)-16RF=

A WN1050-300 RF1.0ch80SSF D=90 C=1

wn50(b)-25m s+4/70-1 l2-200-1.M�/5RFf-1

AWN 80