TWG GROUP

Welded joints

Welded joint as is clear from its name is obtained by the fusion edges of the parts to be joint together, with or without the application of pressure and filler material. An electric arc or gas is used for fusion of the material.


Types of welded joints

There are commonly two types of welded joints

A: Fillet joint or lap joint
B: Butt joint

Fillet joint or lap joint

In this type of the plates are over lap and then welding the edges the plates. The lap joint may be classified as
1. Single transverse fillet joint
2. Double transverse fillet joint
3. Parallel fillet joint

A single transverse lap joint has the disadvantage that the edge of the plat which is not welded can rap out of shape.

In this type of joint is obtained by placing the plates edge to edge and then welded.
The butt joint may be classified as

Butt joint

In this type of joint is obtained by placing the plates edge to edge and then welded.
The butt joint may be classified as


  1. Square joint
  2. Single v joint
  3. Double v joint
  4. Single u joint
  5. Double u joint