Nanpi Haokai Hardware Co., Ltd. has established itself as a premier CNC turned parts manufacturer in China’s Bohai Economic Rim, combining strategic location advantages with two decades of precision engineering expertise. Located just 1 kilometer from the Beijing-Shanghai Expressway and serving as a critical hub between Tianjin and Beijing, the company specializes in custom metal component production for global industries including automotive, medical equipment, and renewable energy systems.
Core Competencies in CNC Turning Operations
The company’s CNC turning unit comprises 30+ advanced machines ranging from 30-250 ton capacities, supported by a technical team of 16 engineers and 7 senior technicians. This vertical integration enables complete control over production cycles – from initial design optimization to final quality inspection. All operations adhere to ISO 9001:2015 standards, ensuring consistent precision across batches of 100 to 100,000+ components.
Specialized equipment includes:
- Multi-axis CNC lathes with automatic tool changers
- Swiss-type CNC walking machines for micro-components
- In-house heat treatment and surface finishing lines
- 3D coordinate measuring machines (CMM) for tolerance verification
Flagship CNC Turned Product Range
The company’s CNC turned parts catalog features five core product lines designed for demanding industrial environments:
1. Brass Connecting Rods
These one-piece components achieve ±0.01mm dimensional accuracy through precision CNC turning from solid brass billets. The smooth surface finish (Ra≤0.8μm) ensures reliable electrical conductivity in automotive connectors and medical device applications. Customization options include:
- Material substitution: Phosphor bronze, aluminum, or stainless steel
- Surface treatments: Tin plating, zinc plating, or mirror polishing
- Structural modifications: Multi-stage diameters or keyway slots
2. Knurled Galvanized Bushings
Manufactured through CNC turning and rolling processes, these bushings feature diamond-pattern knurling that increases friction by 300% compared to smooth surfaces. The zinc plating provides 500+ hours of salt spray resistance, making them ideal for:
- Mechanical positioning systems
- Wire harness connectors
- Furniture hardware assemblies
Material options include carbon steel, stainless steel 304/316, and brass H62, with customizable wall thickness from 0.5mm to 10mm.
3. Custom Metal Shovels
The company’s innovative CNC turned shovel components demonstrate advanced forming capabilities. Produced from single metal sheets through progressive stamping and CNC bending, these products eliminate welding seams while achieving 120° bending angles without cracking. Key features include:
- Reinforced structural ribs for 3x load capacity
- Standardized M6-M12 mounting holes
- Material options: Cold-rolled steel, aluminum 6061-T6
Quality Assurance Systems
Every CNC turned part undergoes three-stage inspection:
| Inspection Stage | Verification Method | Acceptance Criteria |
|---|---|---|
| Raw Material | Spectrum analyzer | Material composition ±0.5% |
| In-process | Laser micrometers | Dimensional tolerance ±0.02mm |
| Final | CMM coordinate measurement | Geometric tolerance IT7-IT9 |
Industry-Specific Solutions
The company’s CNC turning services support diverse industrial requirements through specialized production protocols:
Automotive Applications
For engine components and transmission parts, the company implements:
- 100% crack detection using magnetic particle inspection
- Heat treatment to HRC 45-50 hardness
- High-temperature resistant coatings (-40°C to +150°C)
Medical Device Manufacturing
Cleanroom-compatible production lines ensure compliance with:
- ISO 13485 medical device standards
- Biocompatibility testing per ISO 10993
- Electropolishing for Ra≤0.4μm finishes
FAQ
What is the minimum order quantity for custom CNC turned parts?
The company accepts orders starting from 100 pieces for standard designs and 1,000 pieces for fully customized components, with sample production available within 7-15 days.
How does the company ensure dimensional accuracy in mass production?
Each production batch includes statistical process control (SPC) charts tracking 20+ critical dimensions, with automatic machine shutdown if deviations exceed ±0.03mm.
What materials can be processed through CNC turning?
The facility handles over 30 metals including stainless steel 304/316, aluminum 6061/7075, brass H62/H65, titanium alloys, and engineering plastics like PEEK and PTFE.
How are surface treatments applied to CNC turned components?
The company operates in-house plating lines for zinc, nickel, and chrome coatings, with third-party certification available for anodizing, passivation, and Dacromet treatments.
What lead time should be expected for new product development?
Typical timelines include 3-5 days for design review, 7-10 days for prototype production, and 15-20 days for tooling fabrication before mass production commencement.
Summary
Nanpi Haokai Hardware Co., Ltd. stands as a comprehensive solution provider in the CNC turning industry, combining ISO-certified quality systems with flexible production capabilities. The company’s 23,000㎡ facility in Hebei Province houses state-of-the-art equipment operated by a skilled workforce capable of delivering components with 0.005mm precision. By maintaining strategic stock of standard parts while offering rapid customization services, the manufacturer effectively serves both prototype development and high-volume production needs across 12 industrial sectors. Clients benefit from end-to-end project management, including material selection guidance, DFM analysis, and just-in-time delivery coordination through the company’s global logistics network.