GB/T 12459  同心异径管 DN 80×40-Sch10SRC.52524

LWN150-600RF5M/u0025A� sch80Â

DN 80×40-Sch10S RC.52524

wn80(B)-1500RF S16==195922-2002-�F5@P RF4 R0704fRF0@RF6 S

WN400(B)-25RF S=8

BI 2700-S/804.0ch80Scmpa

WN25A-150 RF S=3.5 D=117.3 A

a 3000 δ4=2.2-160

47021 RF800-0.6-0/

3fm450-1.6RF=42

pl2