Threaded elbow
A threaded elbow is a forged fitting that changes piping direction through threaded end connections. The generic title does not establish elbow angle, equal or reducing sizes, male or female arrangement, or thread form; each must be specified for the order. It differs from a socket-weld elbow by its connection principle: assembly relies on thread engagement and sealing rather than inserting pipe into a socket and making a fillet weld. Selection should consider routing angle, thread type and orientation at each end, size, material, sealing method, assembly loads, and maintenance access.
Application and duty
Changing direction with a forged threaded fitting after angle, end arrangement, and thread form are defined by the project specification.