GB/T 12459  弯头 DN 80-490E3D1

DN 80-4 90E3D1

SP-40r/6RF16j&/3-

WN50-900MRFpa16r.hbh40800

47023rf1000-4.0h40SFRF S2RF5-16rfquoRF)-1FMF6 rf/@1/

BL 500-25RF Sch8F

SP-6=10

WN 550-900 RJo2=mJ

WN500-600 RJ Sch/.0.0FRFRF00 RF d rfFF6

3 rf2600-1.03/u00150 RF Sch4)-16rf300 /u00c3/

SP-8-35