GB/T 12459  同心异径管 DN 50×25-6RC�u0083/data)-1

DN 50×25-6 RC�u0083/data)-1

WN 150-1500 RFA=52501

3 M 900-4.0.9B00.25-6R

wn150(b)-10 rf.6JFFR8

WN150(a)-150RF sch40s205

wn500-16ffs=120RFSB

PL600(B)-40RF8040plH3F1-S0

3406 wn32-300 rf0=1H=200019H16X=Nf1=/=4.5f6 R

BWN850-150RFH=210501

rnb/@47021