Steel Rebars & Wires
TIS-certified reinforcing steel bars for all construction applications. Complete range of round bars (RB) and deformed bars (DB) in multiple grades with guaranteed mechanical properties.
Why Choose Forcecrete Steel Rebars
TIS Certified
Full compliance with TIS 20-2559 (Round Bar) and TIS 24-2559 (Deformed Bar) standards.
Multiple Grades Available
Round bar SR24 and deformed bar SD30/SD40/SD50 grades to meet all structural requirements.
Complete Size Range
Comprehensive range from 6mm to 40mm diameter for all construction applications.
Heat-Treated Options
Heat-treated deformed bars marked with 'T' symbol for enhanced mechanical properties.
Quality Markings
Permanently raised marks showing manufacturer, size, grade, and steelmaking process.
Precise Tolerances
Controlled mass and length tolerances per TIS specifications for consistent performance.
Standards & Product Types
All products manufactured to Thai Industrial Standards with strict quality control.
Round Bar (RB)
Standard: TIS 20-2559
Grade: SR24
Sizes: RB6 to RB34 (6mm to 34mm diameter)
Round bars with smooth surface for general reinforcement applications requiring good bendability.
Deformed Bar (DB)
Standard: TIS 24-2559
Grade: SD30 / SD40 / SD50
Sizes: DB6 to DB40 (6mm to 40mm diameter)
Deformed bars with raised ribs for superior bond with concrete. Heat-treated bars carry "T" symbol.
Round Bar (RB) — TIS 20-2559
Nominal sizes and unit mass. Design size = nominal diameter.
| Size | Diameter (mm) | Area (mm²) | Unit Mass (kg/m) |
|---|---|---|---|
| RB6 | 6 | 28.3 | 0.222 |
| RB8 | 8 | 50.3 | 0.395 |
| RB9 | 9 | 63.6 | 0.499 |
| RB10 | 10 | 78.5 | 0.616 |
| RB12 | 12 | 113.1 | 0.888 |
| RB15 | 15 | 176.7 | 1.387 |
| RB19 | 19 | 283.5 | 2.226 |
| RB22 | 22 | 380.1 | 2.984 |
| RB25 | 25 | 490.9 | 3.853 |
| RB28 | 28 | 615.8 | 4.834 |
| RB34 | 34 | 907.9 | 7.127 |
Deformed Bar (DB) — TIS 24-2559
Nominal sizes and unit mass. Design size = nominal diameter.
| Size | Diameter (mm) | Area (mm²) | Unit Mass (kg/m) |
|---|---|---|---|
| DB6 | 6 | 28.3 | 0.222 |
| DB8 | 8 | 50.3 | 0.395 |
| DB10 | 10 | 78.5 | 0.616 |
| DB12 | 12 | 113.1 | 0.888 |
| DB16 | 16 | 201.1 | 1.578 |
| DB20 | 20 | 314.2 | 2.466 |
| DB22 | 22 | 380.1 | 2.984 |
| DB25 | 25 | 490.9 | 3.853 |
| DB28 | 28 | 615.8 | 4.834 |
| DB32 | 32 | 804.2 | 6.313 |
| DB36 | 36 | 1,017.9 | 7.990 |
| DB40 | 40 | 1,256.6 | 9.865 |
Mechanical Properties (Minimum Requirements)
Guaranteed minimum mechanical properties for all grades per TIS standards.
| Grade | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| SR24 (RB) | ≥385 MPa | ≥235 MPa | ≥21% |
| SD30 (DB) | 480 MPa | 295 MPa | 17% |
| SD40 (DB) | 560 MPa | 390 MPa | 15% |
| SD50 (DB) | 620 MPa | 490 MPa | 13% |
Technical Requirements & Markings
Bend Tests
SD30 Bend Test
- ≤16mm: Bend 180° around mandrel 3× nominal dia
- >16mm: Bend 180° around mandrel 4× nominal dia
SD40 Bend Test
- All sizes: Bend 180° around mandrel 5× diameter
SD50 Bend Test
- ≤25mm: Bend 90° around mandrel 5× diameter
- >25mm: Bend 90° around mandrel 6× diameter
Note: Tables use standard formulas: Area = 3.1416 × d²/4 and Unit mass (kg/m) = 0.00785 × Area (mm²) as defined in TIS. Always verify project-specific grade/size and any "T" requirement against drawings and codes. Heat-treated bars must carry the "T" symbol after the grade marking on the bar (e.g., SD50 with "T").
Need Steel Reinforcement for Your Project?
Our team can help you select the right grade and size for your structural requirements. Contact us for technical specifications, certifications, and delivery scheduling.