HG/T 20592  法兰盖 BL 500-25 RF

HG/T20592-2009 BL500-25RF

B PJ/SE 300(B)-16 RF S=8

BL 65-25 RF

WN80-300RFs5-16rfa80s61

20592 WN100B-25RF

SO 80-150 rf

SO 20-16 RF

WN 40(B)-100 M S=5

3 M1400-4.0Sc

PL 25(B)-16 RF7.1 Sch160-25525 RF S=880 RFRF Sc;-150RF¢â�-100S RF S=6RF S=8��-3 RE)