HG/T 20592  法兰 PL 250(B)-16 RF=FRmchh4606 nPL/W-B RF Ⅱ4400 C=60

SO300-150RF Soth

法兰pl250(b)-16rf=FRmchh4606 nPL/W-B RF Ⅱ4400 C=60

WN 50(B)-16 RF rfF/)-

20592 WN15B-25RF05 RF S=/045560/

SO 40-16RF吧Sch0S.0c S=4.56155 B=6120S1450 RF=

SO50(B)-16RFll=18c=10d=.3RFRF50r S=10 B=f2=2SF

20592 WN15B-25RF05 RF S=/045