A flange is a method (metalic part) of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.According to images i found on internet , i create a 3d model of a flange without materials,and unjoin parts,so you can manipulate and paint the model as you like.I hope you enjoy it.