GB/T 12459  偏心异径管 DN 800-Ⅱ-3REducer D=

DN 800-Ⅱ-3 Reducer D=

&ampquothg20615 wn450-600rj&a

PL 40-63 FM8MW/50 RF Sch10S92mpT910)

SO50-300 fF B=5910rf

WN60-300 RF�55 �Ј16.5ta°0

pl20(b)-25t0-d=8

A WN 32"-300 RF B=40

PL80(B)-16 RFRF0.25 RRF&=&

WN600(B)-16 RF S=3.5

DN150/PN63/