We supply high-quality steel reinforcement bars including HPB300, HRB335, HRB400, and HRB500. These hot-rolled steel bars are manufactured according to Chinese standard GB1499.2-2018. HPB300 is a plain round bar with smooth surface, ideal for stirrups and wall reinforcement. HRB335, HRB400, and HRB500 are deformed ribbed bars (rebar) featuring excellent bond strength with concrete. Available diameters range from 6mm to 40mm, with standard lengths of 9m or 12m. Suitable for concrete reinforcement in buildings, bridges, roads, and other civil engineering projects. Yield strength: 300MPa, 335MPa, 400MPa, and 500MPa respectively. Quality meets international standards.
◉ Product Details
| Grade | Old Grade Name | Surface Type | Yield Strength (MPa) | Common Diameters | Main Application |
|---|---|---|---|---|---|
| HPB300 | Grade I | Plain / Smooth | ≥300 | 6-12mm | Stirrups, wall reinforcement |
| HRB335 | Grade II | Deformed / Ribbed | ≥335 | 12-25mm | Beams, columns, shear walls in medium/large structures |
| HRB400 | Grade III | Deformed / Ribbed | ≥400 | 6-40mm | General concrete reinforcement (most common grade) |
| HRB500 | Grade IV | Deformed / Ribbed | ≥500 | 12-50mm | Large prestressed structures, heavy-load buildings |
◉ Key Features
HPB300: High ductility, excellent weldability, smooth surface for easy bending
HRB335: Good balance of strength and workability, suitable for general construction
HRB400: High strength, superior bond with concrete, most widely used grade
HRB500: Ultra-high strength, reduces steel consumption, for heavy-duty projects
◉ Technical Specifications (Typical)
| Parameter | Value |
|---|---|
| Standard | GB1499.2-2018 |
| Production Method | Hot-rolled |
| Carbon Content | ≤0.25% |
| Tensile Strength (HRB400) | ≥540 MPa |
| Tensile Strength (HRB500) | ≥630 MPa |
◉ Product Display
