HG/T 20592  法兰 SO 200-40 RF N=200 B 90EL=ff 2rf1032)0=6S=1rF-6002.5/58-13

SO200-40RF N=200 B 90EL=ff 2rf1032)0=6S=1rF-6002.5/58-13

DN1600-PN6 PL RF I

sw15(B)-25 g

WN 200-150 RF

A WN 100-150 RF FF S‚¸à a=

WN 300-150 RFsch/80-.5f)uotFF08 d==90-1R5-30 b=19 S=5.63J S ⅡcB

Wn50(B)-40rf9S=4/97-

PL15(B)-16RF0F S=

WN 50(B)-