QIDAMT
Product Overview
The Q235 hot rolled carbon steel round bar is a solid cylindrical steel bar produced by hot rolling to GB/T 702-2017. Q235 is a carbon structural steel grade with a guaranteed yield strength of 235 MPa, combining good strength, excellent machinability and low cost for a wide range of general engineering applications.
Round bars are supplied with black mill finish or bright surface, in diameters from 8 mm to 200 mm and lengths of 6 m, 9 m and 12 m. Custom cutting, chamfering and surface treatments are available on request.
Specifications
| Item | Specification |
|---|---|
| Standard | GB/T 702-2017 |
| Material Grade | Q235 carbon structural steel |
| Shape | Solid round bar (hot rolled) |
| Diameter Range | 8 mm to 200 mm |
| Length | 6 m / 9 m / 12 m, custom cutting available |
| Surface | Black mill finish or bright (peeled) surface |
| Yield Strength | Min. 235 MPa |
| Tensile Strength | 370-500 MPa |
| Elongation | Min. 26% |
| Processing | Cutting, turning, drilling and forging on request |
Key Features
- Guaranteed 235 MPa yield strength with stable chemical composition
- Excellent machinability for turning, drilling and threading
- Hot rolled structure with uniform cross section
- Good weldability for structural connections
- Available in black, bright or galvanized finish
- Mill test certificate and inspection report supplied
Applications
- Shafts, axles, pins and fasteners
- Machinery parts and general mechanical processing
- Building and structural reinforcement
- Frames, brackets and supports
- Forging blanks and hardware manufacturing
Quality Control & Packaging
Each batch is tested for chemical composition, mechanical properties and surface condition before shipment. Round bars are bundled with steel straps, protected with waterproof wrapping and marked with grade, diameter and batch number. Mill test certificates are available upon request, and free samples can be provided for quality evaluation.
