Different Types of Welding Joints and their Uses
An intricate and tortuous craft, welding demands in-depth knowledge of the methods of welding, evolving techniques and different types of welding joints. Weld joints implies joining two or more metal or non-metal parts together to form a single unit, by using a specific technique and geometry.
Broadly speaking, there are five major types of weld joints - Butt Joint, Tee Joint, Corner Joint, Lap Joint, and Edge Joint.
Different Types of Welding Joints
1. Butt Weld Joint: One of the most simplest and commonly used type of welding joint, the Butt Weld Joint, is a joint in which the ends of two butting members are welded together after placing them side-by-side or end-to-end.
Weld types in the Butt Joint:
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Single groove weld
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Flanged butt weld joint
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Single bevel weld
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Double bevel weld
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Flare bevel weld
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Single V-groove weld
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Flare V-groove weld
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Double V-groove weld
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Single U-groove weld
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Double U-groove weld
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Single J-groove weld
Uses: Welding pipes, fittings and valves fabrication
2. T-Weld Joint: When two surfaces, one horizontal and one vertical are joined at a 90-degree angle, and welded together to make a ‘T’ shape it is called a T Joint.
Weld types in the T-Weld Joint:
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Double Groove Weld
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Square Groove Weld
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Single Flare Bevel Groove Weld
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Single Bevel Groove Weld
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Double Bevel Groove Weld
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Fillet Weld
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Flanged T Joint
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J-Groove Weld
Uses: In Sheet metal industry for the manufacture of frames, boxes, etc.
3. Corner Weld Joint: A Corner Joint involves welding two parts of metal by placing the corners of two pieces at a right angle (either open corners or closed corners) to form an L-shaped piece.
Weld types in the Corner Weld Joint:
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Square Groove
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Edge Weld
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Bevel Groove Weld
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V-Groove Weld
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Flare V-Groove Weld
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J-Groove Weld
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U-Groove Weld
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Flare Bevel Groove
Uses: In the sheet metal industry for the manufacture of frames, boxes, and other applications.
4. Lap Weld Joint: Generally it is used for welding two metal pieces of varying thickness, the Lap Joint involves placing the two pieces one above the other in an overlapping position. It is a modification of the Butt Joint and may include one-sided as well as double-sided welding.
Weld types in the Lap Weld Joint:
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Fillet Weld
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Spot Weld
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Seam Weld
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J-Groove Weld
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Bevel Groove Weld
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Flare Bevel Groove Weld
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Flanged Lap Joint
Uses: Laser beam, electron beam and resistance spot welding. Majorly used on sheet metals than on thicker materials.
5. Edge Weld Joint: An Edge Joint involves welding the surface edges of two adjacent pieces together that are placed on parallel planes. Since this type of welding joint only welds the surface and not the entire thickness of the joint, it is not used in pressure or stress-based end-uses.
Weld types in the Edge Weld Joint:
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V-Groove Weld
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Flared V-Groove Weld
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J-Groove Weld
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U-Groove Weld
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Bevel Groove Weld
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Edge Flange Weld
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Corner Flange Weld
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Square Groove Weld
Uses: For joining the edges of mufflers, sheet metals and other low-stress, low-pressure applications.
Conclusion
Choosing the right joint from the above-mentioned different types of welding joints depends on the strength required for the project, the positioning of the parts and the space & accessibility of the weld. Always make sure to calculate the approximate load-bearing requirements of each part to choose the right weld joint.
At D&H Sécheron, we offer a wide array of innovative products, Conventional Welding Consumables, and Reclamation Welding Consumables.
For more details, get in touch with us today.
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