There are several different types of fittings used for a variety of purposes; but what they all have in common is that if we ever want to deviate a direct line in the pipeline, using a fitting –also called an adapter- is of necessity.
Fittings are used in pipe systems to connect straight sections of pipe, to regulate fluid flow and to provide the pipeline with necessary branches and diversions.
 
Types of fittings
Elbow
Coupling
Union
Nipple
Reducer
Tee
Cap
Plug
This company  offers fitting with Indian brand “General Instrument Consortium”.
 
CatalogsProducts
GICFitting