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Precision Metal Bright Bars Engineered for Excellence

Leading manufacturer of high-precision round, hexagonal, square, and custom-shaped steel bars for global industrial applications.

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About Wanxin Metal Products

Junhaosheng Group is a modern enterprise specializing in the production and sales of precision metal bright bars. Established in 2000, we have developed into one of the most influential manufacturers in China's metal bright bar industry.

Over the years, we have established six trading companies and two manufacturing bases. Our sales network spans across China and extends to Southeast Asia, Europe, and the American markets.

2000
Founded
8
Facilities
30+
Countries
200+
Clients
Factory interior Precision machining Quality inspection Finished products

Product Center

We supply a wide range of precision metal bright bars in various grades and shapes to meet diverse industrial requirements.

Precision Round Bar

Precision Round Bar

High-tolerance round steel bars available in multiple alloys and finishes.

  • Diameter: 3mm - 300mm
  • Grades: 1045, 4140, 42CrMo, etc.
  • Finish: Bright, Ground, Peeled
  • Tolerance: h8, h9, h10
Hexagonal Bar

Hexagonal Bar

Precision hex bars ideal for machining and fastener applications.

  • Size: 5mm - 100mm across flats
  • Grades: C45, SCM440, SS400
  • Process: Cold Drawn, Ground
  • Standards: JIS, ASTM, DIN
Square Bar

Square Bar

Accurate square profiles for structural and mechanical components.

  • Size: 5x5mm - 150x150mm
  • Grades: S45C, 20MnV6, 38B3
  • Finish: Bright, Peeled, Ground
  • Tolerance: ±0.1mm to ±0.5mm
Alloy Steel Bar

Alloy Steel Bar

High-strength alloy steels for demanding engineering applications.

  • Types: Cr-Mo, Ni-Cr-Mo, Boron Steel
  • Standards: AISI, SAE, JIS G4053
  • Heat Treatment: QT, Annealed
  • Applications: Automotive, Machinery
Stainless Steel Bar

Stainless Steel Bar

Corrosion-resistant stainless bars in austenitic and martensitic grades.

  • Grades: 304, 316, 410, 420, 17-4PH
  • Forms: Round, Hex, Square
  • Finish: Bright, Ground, Polished
  • Standards: ASTM A276, JIS G4303
Free Cutting Steel

Free Cutting Steel

Optimized for machining efficiency with excellent chip breaking.

  • Grades: 12L14, 1215, SWCH22A, SUM24L
  • Lead/Bismuth: Free machining additives
  • Applications: Fasteners, Shafts, Bushings
  • Standards: JIS G4083, ASTM A108
Special Shape Profiles

Special Shape Profiles

Custom-shaped bars tailored to specific engineering requirements.

  • Shapes: Flatted, Keyed, D-Shaped
  • Materials: Carbon, Alloy, Stainless
  • Process: Cold Forming, Machining
  • Custom Tolerances: Available
Ground Bar

Precision Ground Bar

Ultra-precise ground bars for high-accuracy applications.

  • Finish: Centerless Ground
  • Tolerance: h6, h7, h8
  • Roundness: ≤0.005mm
  • Surface: Ra ≤0.4μm
Cold Drawn Bar

Cold Drawn Bar

Enhanced mechanical properties through cold drawing process.

  • Process: Cold Drawn, Stress Relieved
  • Benefits: Improved Strength, Straightness
  • Grades: 1018, 1022, C20E, C35E
  • Standards: EN 10277, JIS G3109
Peeled Bar

Turned & Peeled Bar

Surface-processed bars with consistent dimensional accuracy.

  • Process: Turning, Peeling, Polishing
  • Surface: Ra ≤3.2μm
  • Applications: Hydraulic, Pneumatic
  • Diameter: 20mm - 300mm

Advanced Manufacturing Capabilities

State-of-the-art equipment and rigorous quality control ensure superior product consistency and performance.

Modern Production Equipment

  • Miyazaki Combine-Strengthening Machine
  • Advanced Wire Drawbenches
  • High-Precision Coreless Grinders
  • Automated Sandblasting Systems
  • CNC Cold Saws and Cut-Off Machines

Comprehensive Testing Equipment

  • Optical Emission Spectrometer (OES)
  • Universal Testing Machine
  • Rockwell & Vickers Hardness Testers
  • Ultrasonic Flaw Detection
  • Surface Roughness & Roundness Testers

Global Supply Network

  • Sales Network Across China
  • Exports to Southeast Asia
  • European Market Distribution
  • American Market Reach
  • Reliable Logistics Partners

Quality Assurance

  • ISO 9001 Certified Processes
  • Material Traceability System
  • Batch Testing & Certification
  • Strict Dimensional Control
  • Surface Defect Inspection

Experienced Team

  • 20+ Years Industry Experience
  • Technical Sales Support
  • Engineering Consultation
  • Custom Solution Development
  • Multilingual Customer Service

Value-Added Services

  • Cutting to Length
  • Heat Treatment Coordination
  • Surface Coating Options
  • Custom Packaging
  • Just-in-Time Delivery
2000
Year Founded
8
Manufacturing Facilities
30+
Countries Served
200+
Global Clients

Frequently Asked Questions

Find answers to common questions about our products and services.

What types of steel grades do you offer?

We supply a comprehensive range including carbon steels (1045, C45), alloy steels (4140, 42CrMo), stainless steels (304, 316, 420), and free-machining steels (12L14, SUM24L) according to international standards.

What are your standard tolerances for round bars?

Our standard tolerances are h8, h9, and h10 for bright bars. For precision ground bars, we offer h6 and h7 tolerances with roundness up to 0.005mm.

Can you provide custom shapes and sizes?

Yes, we specialize in custom-shaped profiles including D-shafts, flatted bars, keyed shafts, and other special geometries based on customer drawings and specifications.

What quality certifications do you have?

Our manufacturing processes follow ISO 9001 quality management standards. We provide material test certificates (MTC) with every shipment, including chemical composition and mechanical properties.

What is your production capacity and lead time?

Our monthly production capacity exceeds 5,000 metric tons. Standard product lead time is 15-25 days after order confirmation, while custom orders may require additional time based on complexity.

How do you ensure consistent quality across batches?

We implement strict quality control at every stage: incoming material inspection, in-process monitoring, and final product testing using advanced equipment including OES spectrometers, hardness testers, and ultrasonic flaw detectors.

Contact Us

Get in touch with our team for product inquiries, quotes, or technical support.

Phone / Hotline
+86-769-82891606
Email
sales@jhsdgwx.com
Contact Person
Ms. Tang
Address
No. 2 Yanhe Road, Qiaoli Maozhushan Village, Changping Town, Dongguan City, Guangdong, China
Visit Official Website
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