GB/T 12459  偏心异径管 DN 450×350-5RE00/50/650

DN 450×350-5 RE00/50/650

WN65-63M S/)-

PL 40(B)-10 FFRF

PL200A-16RF/B80400-F0

WN80(B)-16 RF-2.5rF50rf/RF NB0R Sc/9

WN150-150Rf

SO65-40T B-16

WN50B-25RF S=460 RF RC4050RF sc8/f SH/T3406.6315

PL50(B)-16 RFrf.0/(B)-16

pl400(b)-6 rfm-1-2.5/data41/5(brS