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The 5 Types of Basic Welding Joints


There are five basic types of welding joints, with each having a number of variations in order to meet different needs. Ateliers B.G. Welding Services employs expert welders who are able to perform multiple functions, including welding, CNC machining, parts assembly, shot blasting, and more. Since opening their doors in 1978, Ateliers B.G. has developed a reputation for excellent customer service and performance. Constantly investing in the most current technologies, such as robotic welding, and equipment, as well as the ability to take on jobs of any size, has helped solidify their standing as one of the most experienced and dedicated team of welders throughout the local area. Let’s take a look at just a few of the joint types they routinely weld.

Butt Joint

​A butt weld, or a square-groove, is the most common and easiest to use. Consisting of two flat pieces that are parallel to one another, it also is an economical option. It is the universally used method of joining a pipe to itself, as well as flanges, valves, fittings, or other equipment. However, it is limited by any thickness exceeding 3/16”.

Corner Joint

​A corner weld is a type of joint that is between two metal parts and is located at right angles to one another in the form of a L. As the name indicates, it is used to connect two pieces together, forming a corner. This weld is most often used in the sheet metal industry and is performed on the outside edge of the piece.

Edge Joint

​Edge welding joints, a groove type of weld, are placed side by side and welded on the same edge. They are the most commonly replaced type of joints due to build up accumulating on the edges. They are often applied to parts of sheet metal that have edges flanging up or formed at a place where a weld must be made to join two adjacent pieces together.

Lap Joint

​This is formed when two pieces are placed atop each other while also over lapping each other for a certain distance along the edge. Considered a fillet type of a welding joint, the weld can be made on one or both sides, depending upon the welding symbol or drawing requirements. It is most often used to join two pieces together with differing levels of thickness.

Tee Joint

​Tee joints, considered a fillet type of weld, form when two members intersect at 90° resulting in the edges coming together in the middle of a component or plate. It may also be formed when a tube or pipe is placed on a baseplate.

​Ateliers B.G. only employ highly qualified machining experts with exceptional credentials and experience. You can be certain our welders have all of their required training and certifications. We guarantee top quality work completed safely and efficiently. With over 35 years in the welding business, we have completed too many jobs to count. Now, we are ready to work for you. Call us today to discuss all your needs.

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