GB/T 12459  弯头 DN 50-2.990EL��00

DN 50-2.9 90EL��00

1 RF 800-0.6php5tch9F-.5°FS10R@R4Sc2@R0

PL 200(B)-10 RF

PL125(B)-16RF-150 RF sccF0rf000-2.65H10S30 k.

WN 1 1/2"-150 RF Sch40S

WN 8"-300 LT Sch40ESF00 LT Sch40h40SS0 RF Sch40S1

WN150-150RFH1=-1

BL300-16 RF

BL100-16RF