GB/T 12459  等径三通 DN 200-Sch10STSL 800-1.615ch160FRF2w

DN 200-Sch10S TSL 800-1.615ch160FRF2w

NB/T47021 RF450-0.6TSL

WN 20"-300 RF Sch8000 LFM RF Sch10SF���2"-150 RFB

BL80-16RFc S=f160sSc05

1 FM 600-0.6 δs=12

PL 400(B)-10 RF

PL50(B)-16RF b=3

WN 25(B)-25 RF S=4

pl500b-40rfE0RF sF

SO 200