HG/T 20592  法兰 WN 300-25 M6RFam0أƒï؟½=1=6=2580

WN300-25 M6RFam0أƒï؟½=1=6=2580

LSO65(B)-150RF0566.4.3b)-25R╠27 hg/

PJ/SE 250(B)-16 RF S=8)-6 SCH100=818ampamp

20592 WN125(B)-100 RF W42

LWN 450-300 RF B=4040S

5 RF 2750-2.520δ0=18

bl65-40 rf1f5-300=R040

LWN 1 1/2"-400 LTMrf s=6pa

PJ/