HG/T 20592  法兰 WN 250(B)-25 RF /data/public/public/blue/watermark.png

WN 200-300 RF

SO 80(B)-16 RF

wn250-300 g

PL 500(B)-10 RF

WN 80(B)-16 RF

wn15-900rf()-25R sc=S2 SchF243 b1=M)-150(b)-16g

WN 300-300 FM S=10

1 FM 2000-0.25 δs=10

wn 800(B)-16 FF

wn 50-900 RJgrf s=4FFff b=3 d=RF1000h40S=N00 RF S=14.27F RF H=242-6 RCRF0