GB/T 12459  弯头 DN 80-1290EL

DN 80-12 90EL

BL150-16RF

WN 50-150 RF Sch40

BL 250-16 RF

DN 150-12 90EL

PL150A-16 RF

WN 65-300 RF S=S=5

WN65A-16RFf50 rf sch

PL 500(B)-16 RF

BL 300 -150 RF RF ⅡRFS=3SO6)6FM6件6-10 RF S=3FB=73RJ-RF1R0RF ⅡRF0S135Mu2.5 RJ-Rذ â��2@25