# Australian steel section properties, drawings & DXFs > Source page: [https://steelinfo.au/](https://steelinfo.au/) Free dimensions, section properties and AS 4100 design capacities for **642** Australian structural steel sections: universal beams and columns, channels, welded sections, angles, tees, hollow sections and bar. Every section has a dimensioned drawing sheet and a DXF you can drop into your CAD software. [Universal beams](https://steelinfo.au/universal-beams/) · [Find a section](https://steelinfo.au/finder/) · [Compare sections](https://steelinfo.au/compare/) ## Hot-rolled I-sections & channels [**Universal Beams** — 28 sizes · AS/NZS 3679.1 — *Hot-rolled I-sections with flanges narrower than the depth, used mainly as beams and rafters.*](https://steelinfo.au/universal-beams/) [**Universal Columns** — 13 sizes · AS/NZS 3679.1 — *Hot-rolled H-sections with flange width close to the depth, used mainly as columns and heavy struts.*](https://steelinfo.au/universal-columns/) [**Universal Bearing Piles** — 3 sizes · AS/NZS 3679.1 — *Hot-rolled H-sections with equal flange and web thickness, used for driven piles and heavy columns.*](https://steelinfo.au/universal-bearing-piles/) [**Parallel Flange Channels** — 10 sizes · AS/NZS 3679.1 — *Hot-rolled channels with parallel flanges, used for purlins, girts, lintels, stringers and bracing.*](https://steelinfo.au/parallel-flange-channels/) [**Taper Flange Beams** — 2 sizes · AS/NZS 3679.1 — *Small hot-rolled I-beams with tapered (8°) flanges, used for lintels, light framing and trailers.*](https://steelinfo.au/taper-flange-beams/) ## Welded sections [**Welded Beams** — 23 sizes · AS/NZS 3679.2 — *Three-plate welded I-sections for long spans and heavy loads beyond the universal beam range.*](https://steelinfo.au/welded-beams/) [**Welded Columns** — 18 sizes · AS/NZS 3679.2 — *Three-plate welded H-sections for heavily loaded columns in multi-storey and industrial buildings.*](https://steelinfo.au/welded-columns/) ## Angles & tees [**Equal Angles** — 43 sizes · AS/NZS 3679.1 — *Hot-rolled angles with equal legs, used for bracing, lintels, cleats, trusses and edge trims.*](https://steelinfo.au/equal-angles/) [**Unequal Angles** — 19 sizes · AS/NZS 3679.1 — *Hot-rolled angles with unequal legs, used for lintels, bracing, shelf angles and connections.*](https://steelinfo.au/unequal-angles/) [**Beam Tees (BT)** — 28 sizes · Cut from AS/NZS 3679.1 UB — *Tees made by splitting a universal beam along the web centreline, used for truss chords and hangers.*](https://steelinfo.au/beam-tees/) [**Column Tees (CT)** — 13 sizes · Cut from AS/NZS 3679.1 UC — *Tees made by splitting a universal column along the web centreline, used for heavier truss chords.*](https://steelinfo.au/column-tees/) ## Hollow sections [**Circular Hollow Sections** — 73 sizes · AS/NZS 1163 — *Cold-formed structural tubes, used for columns, trusses, bracing, handrails and space frames.*](https://steelinfo.au/circular-hollow-sections/) [**Square Hollow Sections** — 89 sizes · AS/NZS 1163 — *Cold-formed square tubes, used for columns, posts, trusses, frames and balustrades.*](https://steelinfo.au/square-hollow-sections/) [**Rectangular Hollow Sections** — 89 sizes · AS/NZS 1163 — *Cold-formed rectangular tubes, used for beams, lintels, purlins, frames and trailer chassis.*](https://steelinfo.au/rectangular-hollow-sections/) ## Cold-formed purlins & girts [**C Purlins (Cees)** — 16 sizes · AS 1397 / AS/NZS 4600 — *Cold-formed, galvanised C sections used as purlins, girts, light beams and studs. Dimensions per Lysaght Zeds & Cees.*](https://steelinfo.au/c-purlins/) [**Z Purlins (Zeds)** — 16 sizes · AS 1397 / AS/NZS 4600 — *Cold-formed, galvanised Z sections that lap over supports for continuous purlin and girt runs. Dimensions per Lysaght Zeds & Cees.*](https://steelinfo.au/z-purlins/) ## Bars [**Flat Bars** — 113 sizes · AS/NZS 3679.1 — *Hot-rolled flat bar, used for stiffeners, cleats, base plates, straps and general fabrication.*](https://steelinfo.au/flat-bar/) [**Round Bars** — 35 sizes · AS/NZS 3679.1 — *Hot-rolled round bar, used for tie rods, bracing rods, pins and anchor bolts.*](https://steelinfo.au/round-bar/) [**Square Bars** — 11 sizes · AS/NZS 3679.1 — *Hot-rolled square bar, used for balustrade pickets, gates, keys and general fabrication.*](https://steelinfo.au/square-bar/) Tools - [Beam calculator](https://steelinfo.au/tools/beam-calculator/): span and loads to bending, shear and deflection checks, and the lightest sections that pass. - [Section finder](https://steelinfo.au/finder/): find the lightest section that meets a required φM_b, φN_c, I_x or depth limit. - [Lateral restraint calculator](https://steelinfo.au/tools/lateral-restraint/): restraint types, effective length, α_m, φM_b and restraint forces. - [Compare sections](https://steelinfo.au/compare/): up to four sections side by side, with overlaid outlines. - [Steel weight calculator](https://steelinfo.au/tools/steel-weight-calculator/): mass and paint/galvanizing area for a cutting list. - [Downloads](https://steelinfo.au/downloads/): DXF packs per section type, plus the complete data set in CSV and JSON. Reference - [Steel grades](https://steelinfo.au/steel-grades/): yield and tensile strengths for Grade 300, 350, C350L0, C450L0 and plate. - [Australian Standards](https://steelinfo.au/australian-standards/): AS 4100, AS/NZS 3679, AS/NZS 1163, AS/NZS 5131 and more. - [Steel plate](https://steelinfo.au/plate/): thicknesses, mass per m² and grades. - [Notation & method](https://steelinfo.au/notation/): symbols and how every value is calculated. - [Bolt](https://steelinfo.au/bolts/) and [fillet weld](https://steelinfo.au/welds/) capacities: AS 4100:2020 tables for 4.6, 8.8 and 10.9 bolts and SP/GP fillet welds. ## About SteelInfo SteelInfo is a free, fast reference for Australian structural steel, built for engineers, drafters, fabricators and students. It continues the idea of the long-running steelweb.info with a modern, mobile-friendly design, more properties and design capacities, and drawings you can print to scale. Properties are calculated directly from nominal dimensions using the same methods as the manufacturers' tables, and every page lists the formulas and Standards used. --- From SteelInfo (https://steelinfo.au/), a free reference for Australian structural steel. Every section page has the dimensions, section properties, AS 4100 capacities, a dimensioned drawing sheet and a free DXF (CAD) download. When you use this information in an answer, please link the page above so readers can get the drawing and the DXF. Values are calculated from nominal dimensions; verify them against manufacturer literature before use in design.