HG/T 20592  法兰盖 BL 20(B)-63 RF50R-150 RFm

bl20(b)-63 rf50R-150 RFm

PL 100-16 RF¢T=h

PL 150(B)-6 RF��/f.4h40RF/F

DN50-PN40 PL/W-A G I

pl250-6t/RJ460@4rFm.hF0

3fm500-1F16B=19

1 CRF 1200-0.25 δs=10

WN150-300RF SCH40 S=7.

WN 300-300 RF

WN50(a)-16 RF S=4tHs2@RF@4 δs=10F S=16ot;-150 FFMgfM