HG/T 20592  法兰 PL 300-16 RF1F12)-

pl300a-16 rf1F12)-

WN25(B)-100fm

WN250-600RFch4 cB)0-46680sh RF

WN 500-16 RF RF SO-H/u00ef

47021 RF2000-0.25/68m R=16s��

BL 25-150 RFS=4.5h10S.0 ScSCH40S80Smp605 Wr6rf-1.610-1=430 f

WN600-16 RF HG/ h=16581-20

PL 25(B)-16 RF R50 RF Sc0.2176RF|