HG/T 20592  法兰盖 BL 350-25 M S/30 R RFb)5

BL350-25 M S/30 R RFb)5

BL450-600 FF-0fRF6/0.25° p

WN 15(A)-16 M S=31B

WN 100-150 RF RF0- S=F

SO 3"-300 RF0226´60F-RF Sch86RF rfF-41

SO300(B)-10tsch5MF0096RF25 rf /data/sr

PL10(B)-6FFr RF76.7=�l

WN150(B)-40RF S=/

BL300-6RF/CH2h8050050RF�R