Free steel hollow sections for AutoCAD (DWG): SHS, RHS and CHS

About the standard and the dimensions

The dimensions and corner radii come from EN 10210-2 for hot finished hollow sections: outside corner radius 1.5 t, inside corner radius 1.0 t. The area and the mass per metre were calculated from each drawn outline and compared with catalogue values: SHS 100x100x5, for example, gives 18.7 cm² and 14.7 kg/m, as in the tables.

The blocks are our own drawings, not copies of the standard, and the library is not certified. Dimensions are nominal, without tolerances. Cold formed hollow sections (EN 10219) have larger corner radii, so they are not drawn by these blocks. For ordering use the data of your supplier: the mass in the attribute is calculated with a density of 7850 kg/m³.

Frequently asked questions

Are these sections hot finished or cold formed?

Hot finished, to EN 10210-2, with an outside corner radius of 1.5 t and an inside radius of 1.0 t. Cold formed sections to EN 10219 have larger corner radii, so their outline is slightly different.

How accurate are the mass and area attributes?

They are calculated from the drawn outline with a density of 7850 kg/m³ and match the catalogue values to the printed precision, for example 14.7 kg/m for SHS 100x100x5. For ordering, use your supplier's figures.

Can I use the symbols in commercial projects?

Yes. They are free to use and modify in your own projects, including commercial ones. They are provided as is, without warranty.

How do I get a steel list from my drawings?

Export the section blocks of all drawings to Excel with BlockSync: one row per block with DESIGNATION, length, quantity and mass per metre. Multiply and total them with a pivot table.

Can I change a symbol or add attributes?

Yes. Open the DWG, edit a block with BEDIT to change it or add attributes, and save. To update drawings that already contain the block, run ATTSYNC or replace the block. Make a backup first: attribute values can be lost if ATTSYNC is used carelessly.

Where do I find a ready-made set of these symbols for AutoCAD?

AutoCAD itself ships only a small set of sample blocks, so a full symbol set has to come from a library. Download the ZIP on this page and open the DWG: every symbol is a block. Insert one with INSERT (Blocks palette, Libraries tab, then pick the DWG) or drag it from DesignCenter (ADCENTER). You can also download a single symbol on its own.