TS EN 10266

TS EN 10266 is a terminology standard for symbols and definitions used in product standards for steel tubes, fittings and structural hollow sections. It establishes a common technical language for the product family, so the terms and abbreviations used in different standards are understood consistently across tube, fitting and hollow-section documents.

How the terminology is used

In the steel tube sector, concepts such as size, shape, intended use and structural form can easily overlap. The purpose of this standard is to harmonise how those concepts are named in product standards. In general technical context, “steel tubes” refers to tube and pipe products; “fittings” are components used to change direction, join sections or adapt one connection to another in pipework; and “structural hollow sections” are hollow-profile sections used in load-bearing structures.

Why it matters in product standards

A terminology standard of this kind supports consistent use of symbols, definitions and wording in technical specifications and product standards. For metal pipes, metal tubes, metal conduits, pipework systems and structural steel work, it helps prevent the same term from being used inconsistently across documents. TS EN 10266 is therefore a language-and-definition basis for related steel tube and hollow-section standards rather than a product performance standard on its own.

• Provides common terminology for steel tubes and tubes products.
• Aligns the names and symbols used for fittings.
• Supports the wording used in standards for structural hollow sections.
• Helps maintain meaning consistency across related technical documents.