GB/T 12459  弯头 DN 250-1090EL

DN 250-10 90EL

WN250(B)-10 RF

WN150-600 RF Sch120 RF Sch40

TR FF 5K 15A

.4 B1D

SO250-150rf00 RF Sc016 R(A)7.5 RJ-FAF@W

WN 25(B)-25 RF1SC@5

B BL 26"-300 RF

WN 300-150 RF00 LFM0F.5 RJ-RF0

DN 150×50-7 RC.5��@RF40H@RH@Rpl200-16cRF1SC@50mpa S�