GB/T 12459  偏心异径管 DN 400×15-Ⅱ-12RE49=40

DN 400×15-Ⅱ-12 RE49=40

WN500-150 RF60 R6ampampampampampampampa0

WN150(B)-63 RJ/

1 FM 550-0.25 δs=8 Sc80

BL65-160G sc.6f/data/src.0/am/@PL15H c0@47F S=6RF scha/aa2(2

WN100(B)-25 fM S=1

BL 200-1500 RJAA=76 H110R/

so65b-10t RFf s=3592-2009

SO150(B