Tee Joint Welding Definition<\/strong><\/h2>\n\n\n\nA joint is called as tee joint when it is made between two plates or sections whose surfaces are located at approximately 90\u00b0 to each other at the joint. The joint may be between two plates, or pipe\/tube on to a plate, or a pipe on to a cylindrical shell. The joint looks like the english letter \u2018T\u2019, hence the name t joint welding. The terms such as \u2018t joint\u2019, \u2018tee joint\u2019 all mean the same thing.<\/p>\n\n\n\n
Sometimes, the term \u2018tee weld<\/strong>\u2019 is also used. Using this term is erroneous. It is important to distinguish between a weld and a joint. The term \u2018joint\u2019 represents the manner in which the two joining parts are stacked together. The various types of joints are lap joint, edge joint, butt joint, corner joint, tee joint etc.<\/p>\n\n\n\nThe term \u2018weld\u2019 represents the shape that we see in the cross section of the joint. The various types of welds are groove weld, fillet weld, plug weld, slot weld, stud weld, etc. The two terms joint and weld combine together to make a \u2018weld joint\u2019. Both <\/em>must be mentioned in order to give a complete picture. <\/p>\n\n\n\nA t joint, as we shall see in this article, can be made with different kinds of welds. A t joint weld can be made with a fillet weld (most common), or a groove weld, or a plug weld, or a slot weld, and so on. The choice of the type of weld for making a tee joint depends on the thickness of the parts, position of welding, strength required from the joint, etc.<\/p>\n\n\n\n
Strength Of A Tee Joint<\/strong><\/h2>\n\n\n\nA t joint can be made with different edge preparations. For welding thin base metals for which strength is not a critical requirement, a fillet weld (shown in Fig 6-22 below) is used to weld the joint. For thicker base metals and (\/or) where strength in the joint is necessary<\/strong>, a groove is created in the vertical member, thus creating a \u2018groove-fillet\u2019 weld. <\/p>\n\n\n\nThe groove, as we shall see later in the article, can be made in several ways. For example, a single-J groove, double-J groove, single-bevelled, double-bevelled, and so on. A tee groove joint that is welded from both sides of the joints typically results in stronger joints<\/strong> (as compared with single-sided welded joints). <\/p>\n\n\n\nAlso, besides being stronger, the t groove joint \u2013 when back grinded and welded from the backside, also guarantees a full penetration joint<\/strong>.<\/p>\n\n\n\nThe following figure shows a plain tee joint welded from both sides. This kind of weld is called fillet weld. When welding t joint (s), this is the most common method of joining.<\/p>\n\n\n\n