GB/T 12459  弯头 DN 80-290ELRF4300-1RFfr�ҪS

DN 80-2 90ELRF4300-1RFfr�ҪS

bL80-40rfRF20RFF

bi 500/8016 RB=33/b1=170120=b)R=6f1=00=16

wn15(a)-150rf100/u00be/16S-0fff3FFCH

SO15-10FMF=4.5 �

lwn25-1500 m150-250v

wn20-63g aa5s=4fm=6.02F=4.5-57.

PL 40-10 RF B

LP-28RSb1=5mm0-1.0/L40(B)

PJ/SE 200-1