Square Bar2026-05-03T19:59:28+00:00
Mild steel square bars stacked in warehouse for fabrication and construction

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CoreMet Steel

Steel Square Bar Supplier UK & Global

CoreMet Steel supplies steel square bars across the UK and global markets, providing high-quality mild steel square bars for fabrication, construction and structural engineering applications.

Our steel square bars are manufactured to international standards, ensuring strength, dimensional accuracy and excellent machinability for structural and fabrication applications.

What Is a Steel Square Bar?

A steel square bar is a solid steel section with equal width and thickness on all sides, forming a square cross-section. Square bars are widely used in construction, fabrication, and engineering applications where strength, stability, and dimensional accuracy are required.

Steel square bars provide excellent load-bearing performance and are commonly used for structural supports, frames, machine components, ornamental metalwork, and reinforcement elements. Their uniform shape makes them easy to cut, weld, drill, and machine for both structural and precision applications.

Why Choose CoreMet Steel As Your Square Bar Supplier?

Precision Rolled & Calibrated: Produced using advanced rolling techniques for uniform shape and accurate dimensions.
Durable and High Strength: Manufactured from premium-grade mild steel for excellent load-bearing capacity.
Versatile Usage: Ideal for machining, fabrication, reinforcement, and general engineering applications.
Custom Supply Options: Available in standard and cut-to-length sizes tailored to your project requirements.
Trusted Global Supplier: Supplying across the UK, Europe, Africa, and the Middle East with dependable export support.

Typical Steel Square Bar Sizes

SizeLength
10 × 10 mm6 m
20 × 20 mm6 m
40 × 40 mm6 m / 12 m
75 × 75 mm6 m / 12 m
100 × 100 mm6 m / 12 m

Steel Square Bar Specifications

CoreMet Steel supplies square bars in accordance with internationally recognised standards, ensuring consistent mechanical properties, dimensional accuracy, and reliable performance across structural and industrial applications.

Common standards include:

  • EN 10025 – S235JR, S275JR, S355JR
  • ASTM A36 – Structural carbon steel

Material certification and mill test certificates are available on request.

SpecificationTypical
Size Range10 mm × 10 mm – 150 mm × 150 mm
Length6 m, 12 m, or cut-to-length
Surface ConditionAs rolled (black) or bright drawn
Straightness & ToleranceManufactured to engineering standards
Edge ConditionSolid square section (no seams)

Applications of Steel Square Bars

  • Structural steelwork and frameworks
  • General fabrication and welding
  • Machine parts and precision components
  • Ornamental ironwork and metal fabrication
  • Industrial construction and support structures
  • Tooling and maintenance applications
Benefits of Square Bars

✅ Consistent mechanical properties
✅ Easy to cut, weld, and machine
✅ Cost-effective for various industrial and fabrication applications
✅ Long-lasting performance with excellent dimensional accuracy
✅ Compliant with global steel standards

Explore More from Our Merchant Bar Range

Discover CoreMet Steel’s full range of Merchant Bar Products, including:

Steel Square Bar FAQ

What is the difference between square bar and flat bar?2026-03-14T20:54:41+00:00

Square bars have equal width and height, while flat bars have a rectangular cross-section with wider width than thickness.

What grades are used for square bars?2026-03-14T20:54:36+00:00

Common grades include S235JR, S275JR and S355JR according to EN 10025 standards.

What sizes do square bars come in?2026-03-14T20:54:30+00:00

Steel square bars are typically supplied from 10 mm × 10 mm up to 150 mm × 150 mm, with standard lengths of 6 m or 12 m.

What is a steel square bar used for?2026-03-14T20:54:24+00:00

Steel square bars are used in structural supports, frames, fabrication projects, machine components and decorative metalwork.

For more information on structural steel standards and applications, visit SteelConstruction.info.

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