Used to connect one piece of pipe to another in a straight direction

4 types of connections

Made from standard pipe pieces as per project requirement. Used to connect the threaded fittings near to each other

Used to close vent and drain holes of valves steam traps etc. Also to close end of female threaded pipe fittings

Pipes that are normally threaded and screwed into coupling and fitting

Used to connect socket weld small bore piping to threaded small bore piping

Used for 45 degrees change in direction of piping

Typical use is to connect instrumentation tubes to Air pipes. Also used for Analyzer tubing

These fittings are used as reducer in threaded piping networks

The use of a close nipple allows you to create a closed, tight connection between two female threaded steel pipes or fittings

3 Threaded connections

Used for connecting small bore threaded branch to large bore welded pipe

Used to close the end of pipe

Unions permit easy installation, removal, or replacement of lengths of pipe, valves, or vessels in screwed piping systems. To remove a valve it must have at least one adjacent union and to remove piping from a vessel with threaded connections, each outlet from the vessel should have one union between valve and vessel

Used for 90-degree branch connection of same or reducing size

Used to connect reduced size pipe to larger size female threaded fitting

Used to close one end of female threaded fitting for future expansion

______ are connected by methods dependent upon the material and the demands of service

These are used as reducers in threaded piping network by connecting smaller size pipe to bigger size female threaded fitting

Used to join adjacent lengths of pipes and to provide changes of direction, and branch connections at any angle and to effect a change in size

These fittings are used to connect two female threaded fittings of different sizes to each other

Used for a 90-degree turn of piping in threaded piping systems

Used to close one end of threaded fitting such as Tee or Elbow etc

Cross-threading is typically caused when the two parts being fastened together aren't properly aligned, so the holes don't match up