Buy Steel Base Plate Online
Order Online for Delivery or Click & Collect
Steel base plates are flat, square or rectangular steel plates that provide a sturdy footing for columns, posts, and other structural elements. By spreading the load over a wider area, base plates enable the secure bolting of structures to concrete foundations or floors, thereby enhancing stability and safety.
At Edcon Steel, we offer a wide range of steel base plates to suit any project. Our plates are made from high-quality mild steel (often Australian-made) and meet relevant Australian Standards for structural steel. We also provide stainless steel base plates (grades 304 and 316) for superior corrosion resistance, as well as aluminium base plates for lightweight or non-magnetic applications.
Plates are available in various thicknesses and sizes – from small 50 × 50 mm plates for light-duty jobs up to large 500 × 500 mm plates for heavy structural supports. Choose from base plates with pre-drilled holes (standard hole configurations to suit common bolt sizes) or blank plates without holes. If our standard range doesn’t meet your needs, we can add holes or cutouts according to your specifications.
Order online for nationwide delivery, or visit one of our stores in NSW (Brookvale, Revesby, Blacktown, Bathurst, and Orange) for expert advice and local pick-up.
Explore the product groups below to find the right steel solution for your next project.
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Key Specs & Options: Steel Base Plates
| Specification | Details |
| Dimensions | Thickness: from 3 mm up to 25 mm (light gauge to heavy duty). Plate sizes: available from approx. 50 × 50 mm up to 500 × 500 mm (square or rectangular). Hole diameters: standard hole sizes range from 10 mm to 32 mm (to suit M10–M30 bolts). |
| Materials | Mild steel (structural grade, e.g. Grade 250/300), Stainless steel (304 and 316), Aluminium alloy. |
| Coatings/Finish | Mill finish (raw steel), Primed (painted) finish, or Hot-Dip Galvanised (HDG) for maximum corrosion resistance. (Stainless steel and aluminium plates are supplied in mill finish, as they are naturally corrosion-resistant.) |
| Customisation | Holes can be added or omitted as required. We can drill custom hole sizes or patterns (e.g. specific bolt hole layouts, center holes, etc.). |
| Compliance | Materials and fabrication conform to relevant Australian Standards (e.g. AS/NZS 3679.1 for structural steel), ensuring reliable performance in structural applications. |
Cut to Size. Packed. Delivered.
- We can custom cut lengths on most steel and metal products – minimum cut just 15 mm.
- Cut-to-size items are often available in-store while you wait, and online orders are processed the same day or the next day in most cases.
- Shorter cuts are cheaper to ship and sent via couriers or Australia Post.
- Large or long orders are delivered by our own delivery truck fleet in NSW or by national freight partners.
Work Smarter with Edcon Steel
Plan for load: Thicker plates (10 mm or more) are best suited for structural loads, while plates 3–5 mm thick are suitable for light-duty or non-structural jobs. When in doubt, opt for a thicker option or consult with an engineer.
Choose the right coatings: Use HDG or stainless for outdoor durability, primed for paint-ready jobs, and mill finish for indoor or low-exposure areas.
Cut & Handle Safely: Always wear PPE, secure your workpiece, and de-burr cut edges. Let us handle the cutting and drilling if you prefer.
Hole sizes & placement: Match the hole size to the bolt diameter with clearance (e.g., 14mm for M12), and maintain the edge distance to keep the plate strong.
Check with a Professional: All information here is general. Always confirm your steel sizes and load requirements with a qualified engineer or builder before installation to ensure compliance and safety.
Common Uses and Sectors: Steel Base Plates
Steel base plates have a wide range of applications across various sectors, including construction, metal fabrication, home DIY, industrial, and mining. In building construction, base plates are crucial for providing structural support by anchoring steel columns, posts, or beams to concrete slabs and footings.
Base plates also make it easy to mount brackets or equipment onto floors and walls; you’ll find them in mezzanine floors, concrete anchoring systems, handrail supports, and other structural connections where a bolted flat surface is needed.
Beyond construction, base plates are ubiquitous in fabrication and industrial contexts. They serve as robust mounting platforms for machinery and structural frameworks, providing a stable base for everything from conveyor systems and heavy equipment to signposts and fencing panels.
In the mining and infrastructure sectors, oversized base plates secure large steel structures and platforms, ensuring safety under high loads and vibrations. Even DIY enthusiasts and farmers use base plates for projects like mounting heavy gates, building shed bases, or installing posts for decks and pergolas.
Whether it’s a small backyard job or a large-scale engineering project, steel base plates deliver the reliable footing needed to keep structures firmly in place.
Steel in Action: Projects & Know-How
20 January 2026 / Edcon Team
Copper Price Increase Explained (And How It Affects Brass and Bronze)
Copper prices in Australia have risen sharply since mid to late 2025, affecting a wide range of industries. Here, we explain the price increase, how this affects alloys like brass and bronze, and what we are doing to support customers.
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9 February 2026 / Edcon Team
Bryan’s Model Steam Locomotive Project: Silver Steel & Gauge Plate in Action
Bryan shares how he built a detailed model steam locomotive using silver steel and gauge plate from Edcon Steel, with materials delivered Australia-wide.
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13 October 2025 / Edcon Team
Edcon Steel Launches Uni-Fit Handrail Solutions
We’re excited to bring you products from Uni-Fit Handrail Solutions, a cutting-edge, fully modular system that lets you replace and build handrails without welding or heavy fabrication.
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11 December 2025 / Edcon Team
Steel Angles Explained: Equal vs Unequal, Applications, Benefits & Buying Guide
Learn about equal and unequal steel angles, key applications, benefits & how to buy cut-to-size online with nationwide delivery. | Buy Steel & Metal Online | Edcon Steel
Read MoreFrequently Asked Questions
Do you deliver steel base plates outside of Sydney and NSW?
Yes. We deliver across Sydney daily and throughout regional NSW from our Bathurst and Orange stores. We also ship steel base plates and other steel products nationwide through our trusted freight partners.
Can I collect my stee base plates from a local store?
Absolutely. You can use our free Click & Collect service from any Edcon Steel store in Brookvale, Revesby, Blacktown, Bathurst, and Orange. Place your order online and we’ll notify you when it’s ready for pickup.
Where can I buy steel base plates in Sydney?
Edcon Steel has stores in Brookvale, Revesby, and Blacktown. You can also order online 24/7 for delivery across Sydney and NSW. Our team can help you choose the right base plate for your project.
Do the Orange and Bathurst stores stock steel base plates?
Yes. Our regional NSW stores in Bathurst and Orange stock a wide range of base plates. If a specific size isn’t in stock, we can quickly transfer it from another branch or arrange delivery from our central warehouse.
How much do steel base plates cost?
Prices vary based on size, material grade and finish. You can view live pricing and stock availability on our website or request a quote from your nearest store. We sell by the length you need, so you only pay for what you use.
What hole sizes do your base plates come with?
Standard plates are drilled with 12 mm to 18 mm holes to suit standard bolt sizes like M10 or M12. We can also drill custom holes up to 32 mm to suit your anchors or bolt patterns.
How thick should a steel base plate be for structural use?
For structural posts and columns, we recommend plates between 10 mm and 25 mm thick. Lighter plates (3–6 mm) are suitable for non-structural and DIY jobs. Always check with a qualified engineer if you’re unsure.
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Store locations
Brookvale
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Revesby
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Bathurst
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Orange
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Brookvale Head Office
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