SO Flange 3" - 300# 3 Images | 2 Formats | 0 Likes | 0 Comments | 11 Downloads Download - Part / Inventor (0.19 MB) - STEP (0.02 MB) Categories - Piping- Flanges- SO Flange Tags/Keys SO Flange, 3", class 300, 300 lbs, 3d model, step file Sign In Likes 0 Share Similar files Comments 0 Sign In