Threaded/Screwed Flanges

Threaded/screwed flanges have a centrally drilled and tapped hole in a variety of thread forms. They are then screwed on to a screwed pipe or fitting – they do not have to be welded to secure them in place. For higher pressure applications, they are sometimes welded to seal and secure them.

Threaded flanges are not suited to applications where heating or stresses are present, as leakage through the threads is possible.