HG/T 20592  法兰盖 BL 80-63 RFS172J) Sc5 B=327 f1=3 d=367 b=5B)-16RF0rfFF

BL 80-63RFS172J) Sc5 B=327 f1=3 d=367 b=5B)-16RF0rfFF

BL 300-6 RF

pl50(b)-16 rf b=4

bii40024n=5=45s

PL150(B)-16 RF

3 RF 1800-1.6

PL250(B)-16 RFh4n1160/040RFam8-210rf15cad rf

PL250A)-10RF.8 A=130 rf sch B=

pl25-16RF

PL80(B)-10 RF b=3x=38 NB=48 K=83