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Steel Base Plate Blanks – Plain Weld-On Plates, No Holes
Plain square steel base plate blanks for welding to the foot of posts, legs and frames. Plasma cut from 3, 4 or 5 mm mild steel, 304 or 316 stainless, with no holes so you can drill them to your own fixing pattern. Buy one, a set of 4 or a pack of 10.
At a glance
- Shape: flat square plate, square corners, no holes
- Sizes: 100, 120, 150, 200, 250 or 300 mm square
- Packs: 1, 4 (a set for a table or frame) or 10
- Thickness: 3 mm as standard, 4 mm and 5 mm cost more
- Material: mild steel, 304 or 316 stainless
- Finish: plasma-cut edge, deburred, mill finish (unpainted)
- Made in Knowsley, Merseyside
Want us to cut the bolt holes, add slots, or use thicker plate? Our made-to-order base plates are quoted to your drawing.
Light-duty base plates
These blanks suit light-duty jobs such as feet for workbenches, racks, table and bench legs, gate and fence posts, signs and garden structures. Weld the post to the centre and drill fixing holes where your anchors need to go. For structural columns, follow your engineer’s design and order heavier plate to a drawing.
Choose your material
- Mild steel: the economical choice. Paint, prime or galvanise it for outdoor use.
- 304 stainless: the everyday stainless grade for indoor and sheltered outdoor use.
- 316 stainless: best near the coast, pools, salt or chemicals. 304 vs 316 explained.
How to order
- Pick your material and thickness.
- Pick the plate size and how many you need.
- We plasma cut, deburr and pack your order.
- Delivery is added at checkout.
Made to order. We email your dispatch date. See delivery rates. Need stiffening between post and plate? Add gusset plates.
Questions
Why no holes?
Fixing patterns vary from job to job, so the blanks are plain. Drill them to suit, or get a quote for pre-cut holes.
Are these suitable for structural columns?
We supply plain blanks and make no structural or load claims. Structural base plates should be designed by an engineer, and they are usually thicker than 5 mm.
How much does a plate weigh?
A 150 × 150 × 5 mm mild steel plate weighs about 0.9 kg.
Are these laser cut?
No. They are plasma cut and deburred, so edges show a plasma-cut finish and are not held to laser-cut tolerances. For tight-tolerance parts, send us a drawing.
Plain square steel base plate blanks for welding to the foot of posts, legs and frames. Plasma cut from 3, 4 or 5 mm mild steel, 304 or 316 stainless, with no holes so you can drill them to your own fixing pattern. Buy one, a set of 4 or a pack of 10.
At a glance
- Shape: flat square plate, square corners, no holes
- Sizes: 100, 120, 150, 200, 250 or 300 mm square
- Packs: 1, 4 (a set for a table or frame) or 10
- Thickness: 3 mm as standard, 4 mm and 5 mm cost more
- Material: mild steel, 304 or 316 stainless
- Finish: plasma-cut edge, deburred, mill finish (unpainted)
- Made in Knowsley, Merseyside
Want us to cut the bolt holes, add slots, or use thicker plate? Our made-to-order base plates are quoted to your drawing.
Light-duty base plates
These blanks suit light-duty jobs such as feet for workbenches, racks, table and bench legs, gate and fence posts, signs and garden structures. Weld the post to the centre and drill fixing holes where your anchors need to go. For structural columns, follow your engineer’s design and order heavier plate to a drawing.
Choose your material
- Mild steel: the economical choice. Paint, prime or galvanise it for outdoor use.
- 304 stainless: the everyday stainless grade for indoor and sheltered outdoor use.
- 316 stainless: best near the coast, pools, salt or chemicals. 304 vs 316 explained.
How to order
- Pick your material and thickness.
- Pick the plate size and how many you need.
- We plasma cut, deburr and pack your order.
- Delivery is added at checkout.
Made to order. We email your dispatch date. See delivery rates. Need stiffening between post and plate? Add gusset plates.
Questions
Why no holes?
Fixing patterns vary from job to job, so the blanks are plain. Drill them to suit, or get a quote for pre-cut holes.
Are these suitable for structural columns?
We supply plain blanks and make no structural or load claims. Structural base plates should be designed by an engineer, and they are usually thicker than 5 mm.
How much does a plate weigh?
A 150 × 150 × 5 mm mild steel plate weighs about 0.9 kg.
Are these laser cut?
No. They are plasma cut and deburred, so edges show a plasma-cut finish and are not held to laser-cut tolerances. For tight-tolerance parts, send us a drawing.

