GB/T 12459  弯头 DN 80-290ELRF4300-1R

DN 80-2 90ELRF4300-1R

pl 50-10 FF B=7

SO250 -150RF2r

dn80hg/@wn100(b)-16 rfrj50

3 RF 500-2.5 δ0=2-F2w0FH1.52F/L10S=4f= sch16042

PL100A-16RF b=3

wn32b-40 mF3F SCH RFRF80s00-1.6/F2w RF Sch1

WN40-150 RFMX=N6 R/quo

bl100-25rf Sch8040F0 RF S

lWN250B-150