GB/T 12459  偏心异径管 DN 800×10-Sch10RE0B=

DN 800×10-Sch10 RE0B=

WN25(B)-40 RF S=5

WN 15-100 M S=3-16

LWN 2"-600 RF B=22.48

pl50(b)-25RFh4 RF70

WN 200(B)-100 RF C=60 H=140 S=1LSch3F Sch12

WN300-900RJ- RSch400/

PL40-16RFfs92-20

wn20-25 FFa

WN 50(B)-16 M S1=3600-1.6F10= b=ad论Ã