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A J-groove is formed either with special cutting machinery or by grinding the joint edge into the form of a J. Although a J-groove is more difficult and costly to prepare than a V-groove, a single J-groove on metal between a half an inch and three-quarters of an inch thick provides a stronger weld that requires less filler material.
Single-V Butt Weld. There are many different types of butt welding joints and they all are named with their particular shape. [3] The joint also known as a square groove weld has many different forms in order to connect pieces of metal together and are all capable of bearing loads. [3]
The symbolic representation of a V weld of chamfered plates in a technical drawing. The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.
Butt joints will be single-V or double-V groove with 45-90° and 0–2 mm root gap. If welding a double-V groove, welding will need to be performed in a minimum of two passes. T-joints will normally have a single bevel of 45-60° and 0–2 mm root gap. [1] Both TYK connections for piping and fillet welds are achievable as well.
The bevel provides a smooth clean edge to the plate or pipe and allows a weld of the correct shape (to prevent center-line cracking) to join the separate pieces of metal. [ citation needed ] Simple bevels can be used with a backup strip (thin removable sheet behind the plate joint) with chamfers (and a small land) being used on open root welds.
Butt joint. A butt joint is a wood joint in which the end of a piece of material is simply placed (or “butted”) against another piece. The butt joint is the simplest joint.
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