Steel Base Plates

Square steel base plates for posts, columns, pergolas, carports, signs and machinery. They're laser cut in our Sydney workshop from HA250 hot rolled mild steel, and every standard size ships free Australia-wide.

Steel Base Plates for Sale

Sizes and options

  • 150 x 150mm in 6mm, 10mm and 12mm thick
  • 200 x 200mm in 6mm, 10mm and 12mm, plain or with 4 holes, single or in sets of 4
  • 250 x 250mm in 10mm, plain or with 4 holes
  • Stainless steel (304) 100 x 100mm in 10mm, and 200 x 200mm in 5mm and 10mm, for outdoor and coastal jobs
  • Gusset plates to stiffen post and column connections

See our steel base plate sizes and weight chart for the weight of every common size and thickness.

Custom base plates

Need a different size, thickness, hole pattern or slotted holes? We laser cut base plates to your drawing in any quantity. Send us your drawing for a quote.

The right plate size and thickness depends on your load and post size, so confirm structural plates with your engineer or builder.