Factory Direct Precision Steel Manufacturer in China
High Precision Cold Drawn Square Bar Manufacturer in China
Stop wasting time and money on heavy milling. YaDa delivers factory-direct bright cold drawn square bars with exact dimensional tolerances and superior straightness, ready for your CNC machines.
- Tight tolerance for reduced machining allowance
- Bright surface with sharp square edges
- Custom sizes according to your drawing
Carbon steel, alloy steel and stainless steel square bars available for CNC machining, OEM mechanical parts and industrial components.
Machining Cost Reduction Starts From Better Raw Material
Why Turn to Our Precision Cold Drawn Square Bar for Machining?
Unlike hot-rolled alternatives, our cold drawing process drastically improves the dimensional accuracy and surface finish of square steel bars. Here is how our materials help mechanical parts manufacturers increase profit margins:
Tight Tolerance Eliminates Surface Milling
We maintain dimensional tolerances up to ±0.05mm. Your CNC tools only need to perform the final shaping, securely saving rough milling costs and material waste.
Bright and Smooth Surface Finish
Through standard phosphating, saponification, and precision cold drawing dies, our bright cold drawn square bars are completely free of scale, pitting, and decarburization.
Superior Straightness for Auto-Lathes
Every square bar goes through our multi-roll straightening machines to ensure zero vibration during high-speed CNC machining or continuous feeding processes.
Enhanced Mechanical Properties of Cold Drawn Square Steel Bar
Cold working increases the yield and tensile strength, making the cold drawn square steel bar much harder and more durable for high-stress applications.
Material Grades & Technical Specifications
Available Grades for Cold Drawn Carbon & Alloy Steel Square Bar
As a comprehensive cold drawn square bar supplier, YaDa stocks and processes a wide range of steel grades to meet ASTM, DIN, JIS and GB requirements. Tell us your grade, square size, tolerance and length—we will match the right production route for machining, OEM components and mechanical parts.
- Carbon Steel
- Alloy Steel
- Custom Size
Cold Drawn Square Steel Bar Specification Table
Quick reference for purchasing managers and engineers comparing sizes, grades, tolerances and corner requirements.
| Feature | Specification Details |
|---|---|
| Common Carbon Steel | 1018, 1020, 1045, CK45, A36, Q235, Q355 |
| Alloy Steel Grades | 4140, 4340, 5140, 5120, SCM440, 42CrMo |
| Size Range / Thickness | 4mm x 4mm – 100mm x 100mm |
| Length Tolerances | Standard 3m, 5.8m, 6m, or custom cut to length |
| Dimensional Tolerance | h9, h10, h11, or highly exact ±0.05mm upon request |
| Sharp Corners vs. Radius | Available with sharp right angles or specified corner radii according to your drawing |
Custom Cold Drawing Capability
Custom Size Cold Drawn Square Steel Bar for OEM Components
Standard sizes do not always fit specific engineering designs. If your project requires non-standard dimensions, such as 22.5mm x 22.5mm cold drawn square steel bar, YaDa can develop the tooling and produce the exact profile for stable OEM machining.
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Custom Tooling for Custom Cold Drawn Square Bars
We design and manufacture drawing dies in-house, enabling faster trial production and stable repeat orders for custom cold drawn square bars.
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Exact Fit to Reduce Outer Machining Steps
The bar dimensions can be matched closely to the final component outline, helping OEM parts manufacturers reduce milling time, tool wear and material waste.
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Need Shapes Beyond Squares?
YaDa also manufactures cold drawn special sections according to drawings, including D-shaped, trapezoid, triangle and other non-standard steel profiles.
Explore Custom Cold Drawn Steel Profiles
Send grade, square size, tolerance, length, quantity and drawing. Our technical team will check manufacturability before quotation.
Factory Direct Manufacturing Capability
Inside Our Cold Drawn Square Bar Factory in China
When you buy from YaDa Steels, you are dealing directly with the facility. No trading company markups, no communication gaps. Our in-house production workflow helps OEM buyers control tolerance, surface quality, straightness and delivery stability for every cold drawn square bar order.
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100% In-House Cold Drawing Process from Peeling to Cutting
YaDa controls key production steps including raw material preparation, peeling, pointing, phosphating and saponification, cold drawing, straightening, polishing and precision cutting.
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Inspection for High Precision Square Steel Bar Quality
Dimensional checks, surface inspection, straightness verification and requested inspection plans such as ultrasonic flaw detection or laser micrometer measurement help ensure high precision square steel bar consistency.
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Export Packaging Built to Prevent Rust and Transport Damage
For international shipments, YaDa uses robust sea-worthy packing, bundled protection and anti-rust handling to keep cold drawn square steel bars stable during container loading and long-distance transport.
Final Quality Inspection
Dimensional, surface and straightness checks before shipment.
Export-Ready Packaging
Protected bundles for rust prevention and safe container loading.
Factory Direct Quotation From YaDa Steels
Get the Best Price on Your Next Cold Drawn Square Steel Bar Order
Send us your required grade, size dimension, length, tolerance and quantity. Our engineers will provide a practical and competitive quotation from our cold drawn square bar factory within 24 hours.
- Custom size cold drawn square steel bar support
- Carbon steel, alloy steel and stainless steel options
- Sea-worthy export packaging for long-distance shipment
