Types of Welding Joints
Following are the 5 main types of welding joints:
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2.
3.
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5.
Butt joint welding
Lap joint welding
Edge joint welding
Tee joint welding
Corner joint welding
1. Butt Joint Welding
These types of welding joints form when the two metal pieces are placed end to
end together in the same plane surface, it is known as butt joint welding. In
welding, this is the most common type of joint.
Usually, butt joint welding is used for the fabrication of structures, welding pipes,
valves, fittings, and others. Well, it is simple to prepare, and there are many
variations that can be applied to obtain the desired result.
These variations include such as angles, the width of the gap, groove shape,
root, and weld size. Following are some typical examples of butt weld joints that
are included in welding.
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4.
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6.
7.
8.
9.
Square welding
Single bevel welding
Double bevel welding
V-groove welding
Double V-groove welding
U-groove welding
Double U-groove welding
J-welding welding
Double J-groove welding
2. Lap Joint Welding
It is basically a modification of butt welding, in which the two metal plates are placed in an
overlapping position that is on top of each other, it is known as lap joint welding.
The lap joint welding is applied for welding two metal plates that are different in their thickness.
In this, welding can be done on both sides of the plates for greater strength.
It is widely used in the combined electron beam, laser beam, and resistance spot welding. Lap
joints are rarely used on thick materials, and most of the time also used for sheet metal. While
doing lap joint welding, you will face some drawbacks.
Those are lamellar tearing or corrosion due to the overlapping metals. But, you can easily handle
them by applying the correct technique and modifying the variables as required. Following are
the typical examples of lap joint welding,