In today’s advanced manufacturing landscape, precision CNC turning parts play a crucial role across multiple industries. As a professional manufacturer with over 20 years of experience, Nanpi Haokai Hardware Products Co., Ltd. has established itself as a trusted provider of high-quality CNC turned components. Located near Bohai Sea and adjacent to the Beijing-Shanghai Expressway, our strategic location enables efficient logistics and transportation while maintaining close proximity to major industrial centers.

Comprehensive CNC Turning Capabilities
Our state-of-the-art manufacturing facility houses over 30 CNC turning machines ranging from 30 to 250 tons, complemented by an equal number of advanced processing equipment including numerical control lathes, automatic walking core machines, and injection molding machines. This extensive equipment array allows us to handle projects of varying complexity and production volumes with exceptional precision and efficiency.
The company’s technical team comprises 16 professional technicians and 7 senior mechanics, ensuring our capability to develop and produce high-tech products in the stamping and machining industry. Our integrated workflow covers product design, production, and after-sales service, enabling us to maintain complete control over quality at every stage of manufacturing.
Core CNC Turning Product Lines
As a specialized CNC turning parts manufacturer, we focus on three primary product categories that serve diverse industrial applications:
1. Precision CNC Machined Components
Our precision CNC machined components represent the pinnacle of manufacturing excellence. The brass connecting rod, as our flagship CNC product, demonstrates our commitment to quality through its one-piece molding process that ensures dimensional accuracy and smooth surface finish without burrs. Made from high-quality brass, these components offer excellent electrical and thermal conductivity while being resistant to oxidation and corrosion.
Key features of our precision CNC components:
- Material versatility: Available in phosphor copper, red copper, aluminum, iron, and other alternatives
- Customizable specifications: Dimensions, structure, and appearance can be tailored to specific requirements
- Surface treatment options: Tin plating, zinc plating, polishing, and other finishes available
- Wide application range: Primarily used in connectors, automotive parts, new energy equipment, medical instruments, and electrical terminals

2. Custom CNC Turned Bushings and Sleeves
Our precision knurled galvanized sleeves (metal bushings) exemplify our non-standard custom hardware capabilities. Manufactured through CNC integrated turning, these bushings feature smooth tube walls and precise dimensions. The central knurling design significantly increases assembly friction to prevent slippage during equipment operation.
Product advantages:
- Galvanized anti-rust treatment for extended service life
- Multi-material processing options including iron, stainless steel, brass, and aluminum
- Customizable parameters: Pipe diameter, length, and wall thickness
- Diverse applications: Fasteners, wire harness connectors, instrument bushings, furniture hardware, and mechanical positioning
3. Specialized CNC Turned Connectors
The brass stretched copper shell (connector terminal housing) represents our precision stamping and stretching capabilities. This one-piece seamless product features compact structure and precise positioning for smooth insertion and extraction without jamming. Made from premium copper materials, it ensures stable electrical conductivity and excellent corrosion resistance.
Key specifications:
- Material substitutes available: Multiple copper alloys and other conductive materials
- Customizable dimensions and structural designs
- Premium surface treatments: Gold plating, silver plating, nickel plating
- Primary applications: Aviation plugs, new energy connectors, wire harness terminals, and sensors
Quality Assurance and Certification
Quality remains our top priority throughout the manufacturing process. We have implemented and strictly adhere to the ISO9001:2015 quality management system standards, ensuring every component meets stringent specifications before delivery. Our comprehensive quality control measures include:
| Quality Control Stage | Control Measures |
|---|---|
| Incoming Material Inspection | Chemical composition analysis, dimensional verification, surface quality check |
| In-process Inspection | First-article inspection, statistical process control, critical dimension monitoring |
| Final Inspection | 100% dimensional inspection, functional testing, surface finish evaluation |
| Packaging Inspection | Protection verification, labeling accuracy, quantity confirmation |
Customization Capabilities and Services
As a customer-centric manufacturer, we specialize in providing tailored solutions to meet unique application requirements. Our comprehensive customization services cover:

Material Selection Guidance
Our materials engineers assist clients in selecting the most appropriate materials based on application requirements, environmental conditions, and cost considerations. Available materials include various grades of steel, stainless steel, brass, aluminum, and specialized alloys.
Design Optimization
Leveraging our extensive manufacturing experience, we provide valuable design recommendations to enhance manufacturability while maintaining functional requirements. This collaborative approach helps reduce production costs and improve product performance.
Prototype Development
For new product development, we offer rapid prototyping services using our advanced CNC equipment. This enables clients to verify designs and make necessary adjustments before committing to full-scale production.
Production Scalability
Our flexible manufacturing system accommodates both small-batch production and high-volume orders with consistent quality. We maintain optimal inventory levels for standard products while ensuring quick turnaround for custom orders.
Industry Applications
Our precision CNC turning parts serve diverse industries with specific performance requirements:
- Automotive Industry: Custom components for engine systems, transmission parts, and electrical connectors that withstand high temperatures and vibrations
- Medical Equipment: Precision parts for diagnostic devices, surgical instruments, and monitoring equipment requiring biocompatibility and sterilization capability
- Electrical Industry: High-conductivity connectors, terminals, and housing components with precise dimensional control
- New Energy Sector: Components for solar inverters, wind turbine systems, and battery management systems requiring corrosion resistance
- Instrumentation: Precision bushings, sleeves, and connectors for measurement and control devices
FAQ
What is the minimum order quantity for custom CNC turning parts?
We accommodate both small and large production volumes. Our minimum order quantity starts from 100 pieces for custom designs, though we can produce single prototypes for design verification purposes. For standard products, we maintain inventory for immediate shipment.
How do you ensure dimensional accuracy in CNC turning?
Dimensional control is achieved through multiple measures: using high-precision CNC equipment with closed-loop feedback systems, implementing statistical process control, conducting regular machine calibration, and performing 100% final inspection using coordinate measuring machines (CMM) for critical dimensions.
What surface treatments are available for CNC turned parts?
We offer comprehensive surface treatment options including anodizing, electroplating (zinc, nickel, chrome, tin), passivation, black oxide coating, powder coating, and polishing. The selection depends on the material type and application requirements for corrosion resistance, wear resistance, or aesthetic purposes.
How long does it take to produce custom CNC turning parts?
Production lead time depends on part complexity, order quantity, and current production schedule. Typically, prototype development takes 7-15 days, while production orders require 15-30 days. We maintain open communication about delivery schedules throughout the production process.
What quality certifications do your CNC turning parts have?
All our manufacturing processes comply with ISO9001:2015 quality management system standards. For specific industry requirements, we can provide material certification reports, dimensional inspection reports, and salt spray test reports upon request. Certain products can also be manufactured to meet RoHS and REACH compliance.
Summary
Nanpi Haokai Hardware Products Co., Ltd. stands as a premier CNC turning parts manufacturer combining advanced technology with two decades of manufacturing expertise. Our comprehensive capabilities cover precision CNC machining, custom component development, and full-service production solutions. By maintaining strict quality control, offering extensive material options, and providing flexible customization services, we consistently deliver components that meet the most demanding specifications across various industries.
As we look to the future, we remain committed to technological innovation, process optimization, and customer satisfaction. Our goal is to continue being the preferred partner for businesses seeking reliable, high-quality CNC turned components that contribute to their product success and operational efficiency.