Threaded One End (TOE) Pipe Nipples have threading on one end and is used to make mechanical joints and the other end is often connected by weld.
Threaded Flanges
Threaded Flanges
Flanges connect with pipe and fittings to form a piping system for a variety of construction and manufacturing applications. Threaded flanges, also called screwed flanges, include threads inside the flange bore that connect to the external threads on a pipe without welding.