GB/T 12459  偏心异径管 DN 150×65-Ⅱ-3RE/

DN 150×65-Ⅱ-3 RE/

LJ3/4"-150 FF00 RF S)-25RFpampa

hg/t20592so80(b)-16rf1 FM

DN1000-PN2.5 WN FF

pl25A-16rf Fm00

WN 125(B)-16 T S=4.5

WN 20-1500 RJ S=Rc/5G S/ ff bb=33f055fSCH8/

WN 1 1/2"-150 RF S=4A=89 S=12 H

WN 150(B)-16 RF B=257

WN 1 1