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International standard for welding symbols updated

Posted on 23 Jan 2020. Edited by: John Hunter. Read 3707 times.
International standard for welding symbols updatedWelding symbols are a necessary element of engineering, providing a common language for all involved in fabrication, from designers to the shopfloor.

The internationally agreed standard for these symbols has now been updated; and while they may look like hieroglyphics to the untrained, welding symbols are an essential communication tool that allows welders to put parts together accurately and efficiently.

Two systems from Europe and from Pacific Rim countries are the most widely used in technical drawings around the world. ISO 2553 — Welding and allied processes - Symbolic representation on drawings— Welded joints — combines both systems and is the key industry International Standard for welding symbols.

On technical drawings, it shows how and where welds are to be made, including information such as geometry, manufacture, quality and testing of the welds.

It enables easy comparison between both systems, where needed.

This fifth edition contains updates to align with other ISO welding standards and clarifies some issues, such as plug welds in circular and elongated holes, dimensioning of joint preparations, and improvements to figures.

Further details can be found at the Web site (www.iso.org/standard/72740.html).