Product Overview
Flat bar is hot rolled from rectangular billet into a square edged, straight sided product, with width and thickness controlled to GB/T 704 and minimal variation within a heat so parts line up when punched and bent in batches. It is the most used connecting and stiffening material in steelwork – gusset plates, sag rods, bracing, clamps and fence rails – and can be galvanized for outdoor fencing.
Specifications
| Parameter | Value |
|---|---|
| Size range | 25×3 to 200×20 mm |
| Common sizes | 25×3 / 40×5 / 50×6 / 100×10 mm |
| Steel grade | Q235B / SS400 / A36 |
| Tensile strength | 375 – 500 MPa |
| Yield strength | min 235 MPa |
| Thickness tolerance | +/- 0.2 – 0.5 mm |
| Width tolerance | +/- 0.5 – 1.0 mm |
| Standard length | 6 m / 9 m / 12 m |
| Surface | Mill finish / hot dip galvanized on request |
Applications
Used for gusset plates and stiffeners in steel structures, roof sag rods and column bracing, container lashing fittings, farm fence rails, machine guard frames and switchgear mounting brackets. Fencing contractors in Africa and South America usually take the galvanized version to pair with wire mesh.
Packing / Delivery / Payment
Shipped bare in 2-4 ton bundles with steel straps and timber dunnage, cut or punched to drawing if required; a 20GP holds about 25 tons. Stock ships in 7-15 days, rolling orders in 20-25 days, and galvanizing adds 10-15 days. Payment by L/C at sight or T/T with 30% deposit. Mill certificate, zinc coating test report, packing list and Certificate of Origin are provided.