Welding is one of the metal grafting techniques by liquefying some parent metal and filler metal with or without pressure and with or without adder metal and producing continuous connection.
The scope of the use of welding techniques in construction is very broad, including shipbuilding, bridges, steel frames, pressure vessels, fast pipe, pipeline and so on.
In addition to the manufacture, the welding process can also be used for reparation for example to fill the holes in the holes castings. Making the weld layer on the tool reinforces the worn parts, and other kinds of repairs.
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