Welding a boiler, pressure vessel, pressure piping system or fitting by any method.

The person must hold a certificate of competency, including a performance qualification card, that specifically authorizes the person to weld the pressure vessel, boiler, pressure piping system or fitting and authorizes the method used by the person. 

*Images do not necessarily depict welding as described in summary

Not used as widely for general welding of mild steel. Consists of mixing oxygen and acetylene gas to greate a flame capable of melting steels. Mostly used today for maintenance work and gas metal cutting. Also common for brazing softer metals such as copper and bronze. Can also be used for welding delicate aluminium parts such as refrigeration pipes.

Gas Cutting equipment for metal construction and maintenance. The most accessible of thermal cutting gear is by qxy-acetylene gas cutting and plasma cutting machines. Other methods include the use of a thermal cutting electrode for use with the arc welder machine

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MIG welding stands for metal inert gas welding. It was originally used to weld non-ferrous metals such as aluminum. It eventually was used on steel too. It is a quicker method of welding as compared to other methods of welding.

Some of the advantages of MIG welding include the speed of the welding process. It has the ability to weld many metals and many thicknesses of metal. The biggest advantage to MIG welding is that it can be automated so that the human element can be removed all together. That’s why robotic mig welders are commonly found is on an assembly line in an automobile factory. As mig welding machines utilize a wire feed system this makes them ideal for robotic purposes as they can carry a great amount of filler rod or wire.

Mig welding utilizes a wire feed technique which feeds a wire electrode from your welding handgun to the weld. This wire electrode is available in numerous coil capacities or spools dependent upon the welder sizing, that may contain 100s and perhaps 1000s of feet/meters of wire. The actual wire feed includes a pair of drive wheels to the wire plus a continual speed electric motor to move the drive wheels. The majority of Welders contain numerous features enabling timed feeds together with adjustable speeds.

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Tungsten inert gas welding, or TIG welding, is additionally referred to as GTAW, or simply gas tungsten arc welding. It shares similarities to gas welding, instead utilizing a tungsten electrode to produce the actual arc as well as heat for your weld.

The advantages to utilizing TIG welding: it can easily be employed to weld many types of metals as well as alloys with clean welds. You can avoid spatter or 'messy' welds, thus reducing the need for grinding. TIG welding, when done properly, produces a robust and clean weld.

*Images do not necessarily depict welding as described in summary