Last Chapter of Piping System & Fabrication

Finally the General Definitions of Piping & Fabrication will finish now, and now is the last chapter from General Definitions of Piping System and all about Welding, Welder, Welding Machine, etc.

Welding Fittings.

welding fittings

Wrought- or forged-steel elbows, tees, reducers, and similar pieces for connection by welding to one another or to pipe. In small sizes, these fittings are available with counter bored ends for connection to pipe by fillet welding and are known as socket-weld fittings. In large sizes, the fittings are supplied with ends chamfered for connection to pipe by means of butt welding and are known
as butt-welding fittings.

Welding Generator.
The electric generator used for supplying welding current.

Welding Machine.
Equipment used to perform the welding operation.

Welding Operator.
One who operates a welding machine or automatic welding equipment.

Welding Procedure.
The detailed methods and practices involved in the production of a weldment.

Welding Procedure Qualification Record.
Record of welding data and test results of the welding procedure qualifications, including essential variables of the process and the test results.

Welding Procedure Specification (WPS).

Welding Procedure Specification (WPS)

The document which lists the parameters to be used in construction of weldments in accordance with the applicable code requirements.

Welding Rod.

welding rod

Filler metal, in wire or rod form, used in gas welding and brazing procedures and those arc welding processes where the electrode does not furnish the filler metal.

Welding Sequence.
The order of making the welds in a weldment.

Weldment.
An assembly whose component parts are to be joined by welding.

Wrought Iron.
Iron refined in a plastic state in a puddling furnace. It is characterized by the presence of about 3 percent of slag irregularly mixed with pure iron and about 0.5 percent carbon and other elements in solution.

Wrought Pipe.
The term wrought pipe refers to both wrought steel and wrought iron. Wrought in this sense means ‘‘worked,’’ as in the process of forming furnace welded pipe from skelp or seamless pipe from plates or billets. The expression wrought pipe is thus used as a distinction from cast pipe. Wrought pipe in this sense should not be confused with wrought-iron pipe, which is only one variety of wrought
pipe. When wrought-iron pipe is referred to, it should be designated by its complete name.