Mild Carbon Steel Round Bar for Construction, Machinery & General Engineering
Mild Carbon Steel Round Bar is manufactured from Q195 and Q235 low-carbon steel, offering an excellent balance of strength, ductility, weldability, and cost-effectiveness. As one of the most widely used engineering materials, it is suitable for construction, machinery manufacturing, steel structures, hardware, and general fabrication.
Available in both hot rolled black round bars and cold drawn bright round bars, our products meet a wide range of machining and structural requirements. Hot rolled bars provide excellent load-bearing performance for heavy-duty applications, while cold drawn bars offer superior dimensional accuracy and smooth surface quality, reducing machining time and production costs.
With diameters ranging from Φ6 mm to Φ300 mm, fixed lengths of 6 m, 9 m, and 12 m, and customized processing services, our Mild Carbon Steel Round Bars comply with GB, EN, ASTM, and JIS standards and are supplied with Mill Test Reports (MTR) for reliable international export.
Product Features
Cost-Effective Material Solution
Manufactured from Q195 and Q235 mild carbon steel, these round bars provide reliable mechanical performance at an economical cost, making them ideal for high-volume industrial and construction applications.
Excellent Weldability & Ductility
The moderate carbon content offers excellent fabrication performance, including:
- Welding
- Bending
- Forging
- Machining
The material maintains good ductility and minimizes the risk of cracking during processing.
Hot Rolled & Cold Drawn Options
Choose the production method that best suits your application:
Hot Rolled Black Round Bar
- Black oxide surface
- High load-bearing capacity
- Suitable for heavy structural components
- Ideal for large forged parts and equipment bases
Cold Drawn Bright Round Bar
- Smooth bright surface
- Tight dimensional tolerance
- High machining accuracy
- Reduced secondary finishing costs
- Ideal for precision mechanical parts
Complete Size Range
Available in diameters from Φ6 mm to Φ300 mm, with standard lengths of:
- 6 m
- 9 m
- 12 m
Custom cutting and processing services are also available.
Product Specifications
- Material Grades: Q195, Q235
- Product Type: Mild Carbon Steel Round Bar
- Production Process:
- Hot Rolled Black Round Bar
- Cold Drawn Bright Round Bar
- Diameter Range: Φ6 mm – Φ300 mm
- Standard Lengths: 6 m / 9 m / 12 m
- Standards: GB / EN / ASTM / JIS
- Certification: Mill Test Report (MTR)
Product Advantages
- Excellent Cost Performance
- Outstanding Weldability
- Good Ductility
- Excellent Machinability
- Hot Rolled & Cold Drawn Options
- Smooth Bright Surface Available
- Tight Dimensional Tolerance
- High Load-Bearing Capacity
- Complete Size Range
- International Standard Production
- Mill Test Reports Available
- Large Ready Inventory
Applications
Mild Carbon Steel Round Bar is widely used in:
Construction
- Steel Structures
- Factory Supports
- Structural Frameworks
- General Building Components
Machinery Manufacturing
- Machine Bases
- Mechanical Shafts
- Forged Components
- Equipment Parts
Precision Machining
- Bolts
- Pins
- Bushings
- Precision Turned Components
- Standard Mechanical Parts
Hardware Industry
- Fasteners
- Industrial Hardware
- Fabricated Steel Products
General Engineering
- Equipment Manufacturing
- Metal Fabrication
- Industrial Components
- Custom Mechanical Parts
Compared with HPB300 plain reinforcing bars, Mild Carbon Steel Round Bars offer a wider range of grades, larger diameter options, and are designed for general engineering, machining, and structural manufacturing rather than concrete reinforcement.
Processing Services
To meet different manufacturing requirements, we provide:
- Cut-to-Length
- Precision Cutting
- Turning
- Forging
- Bending
- Customized Machining
- Export Standard Packaging
Processing services are available according to customer drawings and project specifications.
Quality Assurance
Every batch of Mild Carbon Steel Round Bar is supplied with:
- Original Mill Test Report (MTR)
- Mechanical Property Inspection Report
- Stable Chemical Composition
- International Standard Compliance
- Strict Factory Quality Inspection
Large ready stock ensures fast delivery for both domestic projects and international bulk export orders.
Why Choose Mild Carbon Steel Round Bar?
Compared with ordinary construction steel bars, Mild Carbon Steel Round Bar offers:
- Wider Grade Selection
- Larger Diameter Range
- Better Machining Performance
- Excellent Weldability
- Superior Dimensional Accuracy (Cold Drawn)
- High Structural Strength
- Flexible Processing Options
- Lower Manufacturing Costs
- Suitable for Structural & Mechanical Applications
- Reliable International Quality Standards
It is an ideal material for machinery manufacturing, steel fabrication, construction, hardware production, and precision engineering.