About normtorial

What normtorial is

A library of standard parts and steel sections. Each page covers one standard or one section series, with its dimension table and a CAD file for every size.

How the tables are checked

Every value comes from at least two published sources that agree: manufacturer and distributor catalogues and steel mill section tables. Where sources disagree, the value is not published until the disagreement is resolved, and the sources are listed at the foot of each page.

How the files are made

The models are generated by code from the same table you see on the page, so the file and the table cannot drift apart. Section properties of steel profiles, such as area, mass per metre and moments of inertia, are calculated on the model and compared with the mill catalogues before publishing.

What normtorial is not

It is not a standards body and it does not reproduce the text of any standard. It is not affiliated with DIN, ISO, CEN or any national standards body, and the designations are used only to identify each part. It does not sell parts.