Precision Cold Drawn Round Bar Manufacturer
Factory direct supply of high-quality cold drawn round steel bars from China. Engineered for precise dimensions, excellent straightness, and exceptional smooth surfaces to reduce your machining costs.
- Tight tolerance options up to ±0.05mm
- Bright drawn, ground and polished finish
- Carbon, alloy and stainless steel grades
- Custom diameter cold drawn round bar available
Why Choose Our Bright Cold Drawn Round Bar for CNC Machining?
For CNC machining factories, unstable diameter, poor straightness, and rough surfaces directly increase scrap rate, tool wear, and cycle time. YaDa focuses on precision cold drawn round steel bars that help buyers reduce machining allowance and keep automatic production lines running consistently.
Cold Drawn Round Bar with Tight Tolerance (±0.05mm)
Unstable dimensions lead to machine jams and high defect rates. Our precision cold drawn process guarantees ultra-tight tolerances. You can feed our round bars directly into auto-lathes and CNC centers with minimal to zero surface machining required.
- Helps reduce scrap caused by diameter deviation
- Suitable for shafts, pins, bushings and CNC parts
Ground and Polished Round Steel Bar Options
For applications requiring absolute perfection, we offer centerless ground and polished round steel bars. The flawless, defect-free surface removes micro-cracks and significantly extends the life of your CNC cutting tools.
- Bright surface finish for precision machining
- Lower tool wear from smoother, cleaner bar surfaces
Need a Cold Drawn Round Bar for Your CNC Machining Project?
Send us your material grade, diameter, tolerance, length and quantity. Our team will check production feasibility and provide a factory-direct quotation.
Available Grades: Carbon, Alloy & Stainless Steel
Different machining parts require different steel grades. YaDa supplies cold drawn round steel bars in carbon steel, alloy steel and stainless steel to match your CNC machining, shaft manufacturing, automotive component and heavy-duty machinery requirements.
Send us your drawing, grade, diameter, tolerance and application. Our team helps recommend the suitable cold drawn round bar material to reduce machining allowance and improve part consistency.
Cold Drawn Carbon Steel Round Bar
Grades including 1018, 1020, 1045 (CK45). Ideal for general mechanical parts, gears, standard shafts and high-volume CNC machining. Offers stable dimensional accuracy, bright surface quality and excellent machinability.
- 1018
- 1020
- 1045
- CK45
Cold Drawn Alloy Steel Round Bar
Grades including 4140 (SCM440), 5140 and 4340. Supplied with QT (Quenching & Tempering) heat treatment if required, making it suitable for high-stress applications, heavy-duty machinery and transmission parts.
- 4140
- SCM440
- 5140
- 4340
- QT Available
Cold Drawn Stainless Steel Round Bar
Grades 304, 316 and 17-4PH. Delivers superior corrosion resistance, bright aesthetic surface finish and reliable dimensional consistency for food equipment, medical parts, marine components and precision industrial assemblies.
- 304
- 316
- 17-4PH
- Bright Finish
Need a Specific Grade for Your Cold Drawn Round Steel Bar?
Tell us your steel grade, diameter, tolerance, surface finish and application. YaDa Metal can provide factory direct cold drawn round bars according to your machining and production requirements.
Applications of Our Precision Round Steel Bar
Our products are the backbone of modern manufacturing. YaDa supplies cold drawn round steel bars engineered for stable machining, reliable mechanical performance, and reduced processing allowance in industrial production.
Cold Drawn Round Bar for Shafts
Providing the essential straightness and tensile strength required for motor shafts, pump shafts, and pump rods. Consistent bar geometry helps reduce vibration risk and improves downstream turning efficiency.
Cold Drawn Round Bar for Automotive Parts
High reliability and stable mechanical properties used extensively in automotive steering components, fasteners, and suspension systems. Controlled material consistency supports repeatable production quality.
Cold Drawn Round Steel Bar for CNC Machining
The perfect raw material for OEM hardware parts. Its bright finish and accurate size reduce CNC cycle times dramatically by lowering machining allowance and minimizing surface preparation before production.
Need a precision round steel bar matched to your application?
Send us your material grade, diameter, tolerance, length, and end-use application. Our team will help evaluate a factory-direct cold drawn round bar solution for your production line.
Your Reliable High Precision Cold Drawn Round Bar Factory in China
As a direct cold drawn round bar manufacturer in China, YaDa Metal operates a complete in-house production line. From raw material peeling to final precision cutting and polishing, we control 100% of the quality. This allows us to act as a stable cold drawn round bar supplier to clients in Europe, North America, and the Middle East, offering competitive factory-direct pricing.
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Cold Drawn Steel Bar Manufacturer with Full Process Control
Raw material preparation, peeling, phosphating, cold drawing, straightening, polishing and packing are managed inside our own factory.
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Precision Steel Manufacturer China for Tight Tolerance Bars
Dimensional control up to ±0.05mm helps CNC machining buyers reduce turning allowance, material waste and rework risk.
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Factory Direct Cold Drawn Round Bar Supplier for Export Orders
Stable production scheduling, seaworthy packing and long-term export supply support industrial buyers and distributors worldwide.
Steel Bar Peeling Process Before Cold Drawing
Oxide scale and surface defects are removed before drawing to improve surface quality and dimensional consistency.
Cold Drawing Manufacturing Process for Round Steel Bar
Controlled deformation improves dimensional accuracy, straightness and mechanical properties for precision machining.
Ground and Polished Round Steel Bar Surface Finishing
Centerless grinding and polishing are available for buyers needing bright surface, tight size and reduced machining allowance.
Precision Cut Steel Bar and Export Packing Control
Final inspection, accurate cutting and seaworthy bundling help reduce receiving problems for overseas industrial customers.
FAQs About Cold Drawn Round Bar Supplier Capabilities
Before choosing a cold drawn round bar supplier, most CNC machining factories, shaft manufacturers, automotive part producers, and steel importers need clear answers about tolerance, surface finish, material grades, customization, inspection, and export supply stability.
YaDa Metal controls cold drawing, straightening, polishing, precision cutting, inspection, and packing in-house for stable long-term supply.
Can you produce custom diameter cold drawn round bar?
Yes. As a real cold drawn round bar manufacturer, we can build dedicated drawing dies for custom diameter cold drawn round bar. Non-standard diameters can be produced according to your machining allowance, drawing, tolerance requirement, and end-use application.
What is the difference between hot rolled and cold drawn round steel bar?
Cold drawn round steel bar is processed at room temperature after proper surface preparation. Compared with hot rolled bar, it provides a brighter surface finish, better straightness, higher dimensional accuracy, and improved mechanical properties. This helps reduce turning allowance and CNC machining time.
What tolerance can you achieve for precision cold drawn round bar?
Common tolerance options include h9, h10, and h11. For suitable sizes and materials, our precision cold drawn process can control dimensional tolerance up to ±0.05mm. Final tolerance depends on diameter, grade, length, straightness requirement, and whether grinding or polishing is required.
Do you supply bright cold drawn round bar and ground polished round steel bar?
Yes. We supply bright cold drawn round bar for general precision machining and also offer ground and polished round steel bar for applications requiring smoother surface, lower roughness, and reduced tool wear. Surface finish can be selected according to your CNC process and final component requirement.
Which material grades are available for cold drawn carbon, alloy and stainless steel round bar?
YaDa Metal can process carbon steel, alloy steel, and stainless steel cold drawn round bars. Common grades include:
- Carbon steel: A36, 1018, 1020, 1045 / CK45
- Alloy steel: 4140 / SCM440, 5120, 5140, 4340, 20CrMnTi
- Stainless steel: 304, 316, 17-4PH
Is cold drawn round bar suitable for CNC machining, shafts and automotive parts?
Yes. Cold drawn round bar for CNC machining is widely used because its accurate diameter and smooth surface reduce machining allowance. It is also commonly used for transmission shafts, motor shafts, pump shafts, pins, fasteners, gear shafts, automotive steering components, and general precision mechanical parts.
Can you provide precision cutting and customized length for cold drawn round steel bar?
Yes. Standard lengths are commonly supplied from 2,000mm to 6,000mm, and customized length cutting is available. For customers using automatic feeding machines or CNC production lines, precision cutting can help reduce preparation work and improve production efficiency.
How do you control straightness and surface quality of cold drawn round bar?
Our in-house process includes raw material preparation, peeling when required, phosphating and soaping, cold drawing, straightening, surface finishing, and final inspection. Each batch is checked for diameter, surface condition, straightness, and packing condition before shipment.
Can you supply cold drawn round bar with heat treatment such as QT?
Yes. For alloy steel round bars such as 4140 / SCM440 or other grades, quenching and tempering can be arranged according to mechanical property requirements. Please provide the grade, target hardness or tensile strength, diameter, and application when requesting a quote.
Are you a cold drawn round bar manufacturer in China or only a trading company?
YaDa Metal is a professional cold drawn round bar manufacturer in China with in-house production capability. We are not a general steel trading company. Factory-direct production allows better control over tolerance, surface finish, lead time, packaging, and long-term supply stability.
What information should I provide to get a cold drawn round bar quotation?
To receive an accurate quotation, please send the material grade, diameter, length, tolerance, surface finish, quantity, packing requirement, destination port, and application. If you need a non-standard size, a drawing or sample specification will help us evaluate the die and production route.
Need a Custom Cold Drawn Round Bar Quote?
Tell us your grade, diameter, tolerance, length, surface finish, and quantity. Our team will help evaluate the most practical factory-direct production solution for your machining or OEM parts project.
Request a Quote for Custom Diameter Cold Drawn Round Bar
Stop overpaying for your CNC raw materials. Tell us your grade, diameter, tolerance, and quantity, and our engineers will provide a practical quotation and production suggestion within 24 hours.
- Material Grade — e.g., 1045 / CK45, 4140 / SCM440, 304, 316
- Diameter — mm or inch, standard or custom diameter cold drawn round bar
- Length Requirement — 2,000mm–6,000mm or precision cut-to-length
- Tolerance Requirement — h9, h10, h11, ±0.05mm or drawing-based tolerance
