同心异径管 DN 40×20-Sch40RC δ=5

DN 40×20-Sch40 RC δ=5

WN250-16RF S=7/

wn500-150 rf35 d=700

nb/t47021 ff1500-0.25/

WN125(B)-16 RFSS=4 HG/

bWN1400-150RF-0.5m10Fm

wn600(b)-150rf0-1\u00ce\u00b4=210 RF0-300rfb=562=18gcad.co1.0

GB/T29465 M500-4/1.65250(B)-25Mh80F S=6 RF B=10305

47021 R