Joint edge preparation
The edge preparation is very essential for good quality welding. In this consists of cutting the edges of the places to be joint by welded in suitable shapes and proper cleanness must required. Which is free from dust, soil, oil, grease and other external harmful particle. According to the method of cutting the edges are face to face, single ‘V’, double ‘V’, single ‘U’, double ‘U’, single bevel, double bevel, single ‘J’, double ‘J’.
When face to face or plain face to be welded which is allow only up-to 5mm thickness of plate.
Gas welding
Arc welding
Resistance welding
Solid state welding
Radiant energy welding
Thermo-chemical welding
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Joint
Particulars
Welding joint edge preparation
Plain face to face welding joint.
Square for maximum thickness up-to 5mm.
Single ‘V’ welding joint.
Single ‘V’ for sizes between 5mm to 20mm thickness.
Double ‘V’ welding joint.
Double ‘V’ edge for the minimum thickness 12mm.
Single bevel welding joint.
Single bevel for sizes between 5mm to 20mm thickness.
Double bevel welding joint.
Double bevel for the minimum thickness of 12mm.
Single ‘U’ welding joint.
Single ‘U’ edge produced for the plate thickness between 8 mm to 37 mm.
Double ‘U’ welding joint.
Minimum 20mm. thickness plate should be produced double ‘U’ edge shape.
Single ‘J’ welding joint.
The single ‘J’ edge produced for the plate thickness between 8 mm to 37 mm.
Double ‘J’ welding joint.
For the double ‘J’ welding joint the minimum plate thickness should be 20 mm.
One side fillet welding.
Both side fillet welding.
‘K’ welding.