The dashed line is drawn either below or above the solid line of the weld symbol structure, but in most cases, it is under the solid reference line.įillet weld is used to make corner joints, lap joints, and T joints. You can see different fillet, plug, spot, and many other kinds of weld types. Different types of basic weld symbols make up the fabrication or engineering drawings. Basic Weld SymbolsĪpart from all the lines in the structure, you would also see different weld symbols. Below the reference line, you have the arrow side, while above the reference line you have the opposite side. The horizontal line is connected to the arrow. It can be seen as an anchor that ties all the welding symbols together. Reference LineĪnother part of the structure is the reference line, which is the horizontal line. The arrow will also point towards the component that would be prepared with single prepared components. It also has an arrowhead on top of it, which must touch the surface of the component you want to join and the weld location. The line can point up or down at any angle except for 180 degrees. The arrow line points towards a part of the diagram called the arrow side. The arrow line is what connects the reference line to the joint where you would create the weld. The structure must be arranged appropriately and understood for a welder to read it and know where the welds would be placed and how to put it together.

If you understand what the structure means, you can easily read the fabrication or engineering drawings and use your welder for aluminum to create it. The structure includes an arrow line, reference line, dashed line, and the basic symbols. Trusted Source Symbols and conventions used in welding documentation - Wikipedia The first thing to look at with weld symbols You can also get a pocket reference guide of these symbols if you’re finding it hard to remember each one. If you need help with weld symbols and welders, we have an extensive guide on the structure and the different types below. You would create the weld based on the instructions under the reference line. These symbols are usually found in fabrication and engineering drawings.Ī weld symbol would differentiate between two sides of a joint using arrows and the spaces on top and under the reference line. During metal joining processes, weld symbols are meant to indicate different parts of the process. Learn more about our process hereĮngineers and welders use weld symbols during construction. We may earn a commission through products purchased using links on this page.

Weld map software