HG/T 20592  法兰盖 BL 450(B)-40 RF ，S=140SSc RF60

BL450(B)-40 RF ，S=140SSc RF60

BL 80-10 RFhFRF-Sc0RFRF0 rfF-1.6/45-

WN450B-40Rf47ch80 TA=57 D0-000-465

SO 450-150 FF=-1mpampampwd=&amp.5)-1

WN 40-300 RFBf1��B=41 Y=158-F K=D=p/q1.0F1000-1.6100-1.00-S=6ifRB RF s=5

WN400B-63 RFB407.82rj b=21680