HG/T 20623  法兰 WN 700-300 RFB1= C=20 D=213 S

wn 700-300 RFB1= C=20 D=213 S

pl500b-6 rf/0(b)-5RF=1 S=10 R=11 H

PL65(B)-6RF135 S=5 FM S=3mm S1=12-

47065.2 A3)-1a6 m0 ScFRfδ58 d=143 c=M�00cHSm450

WN150B-25RF S=102.5 δ=50 H=119B=2F

bl150-16rf(b)п╟п÷п╒п┴п╟б▒я┌б┬б≥

wn200