2.c Common Screwed and Socket-Weld Fittings

there are 2 (two) types :
1. 45˚ elbow ( threaded or socket-weld )
2. 90˚ elbow ( threaded or socket-weld )



there are 2 (two) types :
1. straight tee ( threaded or socket-weld )
2. reducing tee ( threaded or socket-weld )

c. Union
The Union is basically used as a dismantling fitting, and in many cases it is necessary for assembly. The field crew may install extra Unions at their own discretion to expedite and facilitate the construction of socket-weld and screwed piping.


there are 2 (two) types :
1. Socket-weld union
2. threaded union

d. Reducer


there are 2 (two) types :
1. Reducer insert
2. Coupling reducer