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Welding history

Classification of welding

Effect of welding speed

Welding defects

Types of welding joints

Welding position

Welding electrodes

Types of welding flame

Welding flux

Welding techniques

Welding symbol

Welding edge preparation

Advantages of welding joints

Thermal properties of metal

Welding safety

Types of welds

Brazing

Soldering

Pressure gas welding

The pressure gas welding is define as, the coalescence body is produced by the heating of weld metal and heat source is some gas of mixture. Then apply the pressure on weld metal to completed the pressure gas welding. Any kind of filler metal is not used in this welding process.

This welding technique is commonly used in sheet metal welding, pipe welding, railroad joining etc.

Any kind of special edge preparation is not required in this type of welding method.

Pressure gas welding schemetic diagram Pressure gas welding schematic diagram

Pressure gas welding

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Pressure gas welding