When it comes to sourcing high-quality CNC turning parts for your industrial applications, choosing the right manufacturer is crucial. Nanpi Haokai Hardware Products Co., Ltd., located near Bohai Sea and just 1 kilometer from the Beijing-Shanghai Expressway, has established itself as a premier CNC turning parts manufacturer in China over the past two decades. With a strong focus on technology innovation and quality excellence, we specialize in producing precision CNC machined components that meet the most demanding specifications across various industries.

Why Choose Nanpi Haokai as Your CNC Turning Parts Manufacturer?
As an ISO 9001:2015 certified CNC turning parts factory, we maintain rigorous quality control throughout our manufacturing process. Our 70+ skilled workforce, including 16 technical professionals and 7 senior technicians, operates 30 sets of advanced CNC turning machines ranging from 30 to 250 tons capacity. This combination of expertise and equipment enables us to produce CNC turned components with tolerances as tight as ±0.01mm, meeting the most stringent requirements for automotive, medical, electronic, and industrial applications.
Our commitment to quality begins with material selection. We source only premium-grade metals including brass, stainless steel, aluminum, and copper alloys for our CNC turning processes. Each batch of raw material undergoes strict incoming inspection before entering production. During machining, our CNC operators follow detailed process documentation and conduct in-process inspections at critical stages. Final inspection includes dimensional checks using advanced measuring equipment and surface finish verification to ensure every part meets your specifications.
Our Core CNC Turning Product Lines
As a comprehensive CNC turning parts manufacturer, we offer three main product categories that cover most industrial requirements:
1. Precision Brass Connecting Rods
Our flagship CNC turned product, these connecting rods are manufactured from high-quality brass with excellent electrical conductivity and corrosion resistance. The one-piece design ensures dimensional accuracy and smooth surface finish without burrs. We offer material substitution options including phosphor bronze, red copper, aluminum, and iron, with customizable dimensions, structures, and surface treatments like tin plating, zinc plating, and polishing. These components are widely used in connectors, automotive parts, new energy equipment, medical instruments, and electrical terminals.

2. Custom CNC Turned Bushings
Our precision knurled zinc-plated bushings (metal sleeves) are manufactured through CNC turning with exceptional dimensional accuracy. The knurled middle section significantly increases assembly friction to prevent slippage during equipment operation. After zinc plating for rust protection, these bushings offer excellent corrosion resistance and long service life. We support multi-material processing including iron, stainless steel, brass, and aluminum, with customizable pipe diameters, lengths, and wall thicknesses. These bushings find applications in fasteners, wire harness connectors, instrument sleeves, furniture hardware, and mechanical positioning.
3. High-Precision CNC Turned Connectors
For demanding electrical connection applications, our CNC turned connectors feature seamless one-piece construction with compact design and precise positioning. Made from premium copper materials, they offer stable conductivity and excellent corrosion resistance. We support material substitution, dimensional customization, and premium surface treatments like gold plating, silver plating, and nickel plating. These connectors are ideal for aviation plugs, new energy connectors, wire harness terminals, sensors, and other precision equipment.
Custom CNC Turning Services
Beyond our standard product lines, we excel at providing custom CNC turning solutions tailored to your specific requirements. Our comprehensive services include:
- Design Assistance: Our engineering team works closely with you to optimize part designs for CNC turning, suggesting modifications to improve manufacturability and reduce costs without compromising functionality.
- Prototyping: We offer rapid prototyping services to validate your designs before full-scale production, helping you identify potential issues early in the development cycle.
- Small Batch Production: Our flexible manufacturing capabilities allow us to produce small quantities for testing and market validation, with the option to scale up seamlessly as demand grows.
- Mass Production: With 30 CNC turning machines operating simultaneously, we can handle high-volume orders with consistent quality and on-time delivery.
- Post-Processing: We offer a wide range of secondary operations including heat treatment, surface finishing, assembly, and packaging to provide you with ready-to-use components.

Industry Applications of Our CNC Turned Parts
Our precision CNC turning capabilities serve diverse industries with components that meet their specific performance requirements:
| Industry | Typical Applications | Key Requirements |
|---|---|---|
| Automotive | Connectors, sensors, bushings, fasteners | High precision, corrosion resistance, consistent quality |
| Medical | Surgical instrument components, diagnostic equipment parts | Biocompatibility, precision, cleanliness |
| Electronics | Connectors, terminals, housing components | Electrical conductivity, dimensional stability |
| Industrial Equipment | Gear components, shafts, bushings, fasteners | Strength, wear resistance, precision fit |
| New Energy | Battery connectors, charging components, sensor parts | Corrosion resistance, electrical conductivity, durability |
FAQ
What is the minimum order quantity for custom CNC turning parts?
We accept orders starting from just 100 pieces for custom CNC turned components, making it easy to validate your designs before committing to larger production runs. Our flexible manufacturing capabilities allow us to scale up efficiently as your project progresses from prototyping to mass production.
How do you ensure the dimensional accuracy of CNC turned parts?
Dimensional accuracy is maintained through several quality control measures: 1) Advanced CNC turning machines with high precision spindles and tooling; 2) In-process inspections using calipers, micrometers, and CMMs; 3) Statistical process control to monitor and adjust machining parameters; 4) Final inspection against your detailed drawings and specifications.
What materials can you process for CNC turning?
We work with a wide range of metals including brass, stainless steel (303, 304, 316), aluminum (6061, 7075), copper alloys, carbon steel, and various plastics. For each material, we select appropriate cutting tools and machining parameters to achieve optimal surface finish and dimensional accuracy.
How long does it typically take to produce CNC turned parts?
Lead times depend on order quantity and complexity: 1) Prototyping: 5-10 working days after design approval; 2) Small batch production (100-1,000 pcs): 10-15 working days; 3) Mass production (1,000+ pcs): 15-25 working days. We maintain open communication about production schedules and can expedite orders when necessary.
What surface treatments are available for CNC turned components?
We offer various surface treatments to enhance the appearance and performance of your CNC turned parts: 1) Metal plating: zinc, nickel, chrome, tin, silver, gold; 2) Anodizing for aluminum parts; 3) Passivation for stainless steel; 4) Polishing and brushing for decorative finishes; 5) Black oxide coating for steel parts.
Summary
As a leading CNC turning parts manufacturer in China, Nanpi Haokai Hardware Products Co., Ltd. combines advanced technology, skilled craftsmanship, and rigorous quality control to deliver precision CNC machined components that meet your exact specifications. Our ISO 9001:2015 certification ensures consistent quality across all production stages, while our flexible manufacturing capabilities support projects of all sizes from prototyping to mass production. With over 20 years of experience serving automotive, medical, electronic, and industrial clients worldwide, we have the expertise to solve your most challenging CNC machining requirements. Contact us today to discuss how we can support your next project with high-quality, cost-effective CNC turned components.