WELD JOINT TERMINOLOGY

TERMINOLOGY ASSOCIATED WITH FILLET AND GROOVE WELDS

CONVEX FILLET WELD TERMS

Convex fillet welds have an exterior surface that curves or bumps outward, similar in shape to that of the exterior portion of a circle.

The throat of the weld should not exceed the required reinforcement or throat thickness maximums.  

The following diagram provides all of the standard terminology associated with a convex fillet weld.

Fillet Weld Terms for a Convex Fillet Weld

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CONCAVE FILLET WELD TERMS

Concave fillet welds have an exterior surface that curves or dips inward, similar in shape to that of the interior portion of a circle.

The throat of the weld should not be less than the required reinforcement or throat thickness minimums.  

The following diagram provides all of the standard terminology associated with a concave fillet weld.

Fillet Weld Terms for a Concave Fillet Weld

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GROOVE WELD TERMS

Groove welds are most commonly applied to butt joints and consist of the following types

1. Square

2. Single Bevel

3. Double Bevel

4. Single V

5. Double V

6. Single J

7. Double J

8. Single U

9. Double U

The following diagram provides all of the standard terminology associated with a groove weld.

Groove Weld Terms

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