HG/T 20592  法兰 WN 1800(B)-25 FF S=4.5FF S=452t20592.50.50.b=4

WN 1800(B)-25 FF S=4.5FF S=452t20592.50.50.b=4

WN 300-600 RF B=120/f3=3483 f1=1.

47023 FM700-1.6=46-125111

BL200-25RF

wn400-25 fm. h=64760-150 RFm s=C=20 B=/

PL 50(B)-16 RFFh85-50 RF40 M0=60=12fb)-

wn80-300 rf 16.50-1.

wn80(b)-10fm0-.0h40RF

wn300-10