GB/T 12459  弯头 DN 50-Sch1045E3DfFF4L RFFFampa

DN 50-Sch10 45E3DfFF4L RFFFampa

PL150(B)-16RF b=3 D=28000 r

lwn400(b)-300 m

PL32(B)-2.5 RF

PL150(B)-6 RF12FMB=

PL150(b)-16fMAIFS4rfSF D=17516SNRFB3S=

47021 fm400-1.02î´=52 h=1201B)-16 RF8 U16rf0592 wn20

PL150-16 RF d=212 f1=32 AA=1

NB/T47021 C-RF 4