Nanpi Haokai Hardware Products Co., Ltd., strategically located near Bohai Bay and just 1 kilometer from the Beijing-Shanghai Expressway, has established itself as a leading custom metal parts manufacturer in China over the past two decades. Specializing in precision stamping, CNC machining, and injection molding, our company combines advanced production equipment with a skilled technical team to deliver high-quality components for global industries including automotive, medical, electronics, and machinery manufacturing.
Comprehensive Manufacturing Capabilities
Our 70-strong workforce includes 16 technical professionals and 7 senior technicians operating over 60 modern production machines. This includes 30+ stamping presses ranging from 30 to 250 tons, along with CNC lathes, automatic turning machines, and injection molding equipment. This comprehensive setup enables us to handle projects from initial design through to mass production with complete quality control.
The production facility implements a fully integrated workflow covering design, prototyping, mass production, and after-sales service. This vertical integration ensures consistent quality while maintaining competitive pricing. Our ISO 9001:2015 certification guarantees adherence to international quality standards throughout all manufacturing processes.
As a custom metal parts manufacturer, we specialize in three core product categories: precision stamping components, CNC machined parts, and injection molded products. Each category offers extensive customization options to meet specific application requirements:
- Material selection: Cold-rolled steel, stainless steel, aluminum, copper, brass, and various alloys
- Surface treatments: Zinc plating, nickel plating, chrome plating, anodizing, powder coating, and polishing
- Tolerances: Maintaining ±0.01mm precision for critical dimensions
- Production volumes: Supporting both prototype development and high-volume manufacturing
Core Product Solutions
Our metal shovel represents the pinnacle of precision stamping technology. Manufactured from single-piece metal blank through progressive die stamping, these components feature integrated reinforcement ribs and smooth contours without any welds or joints. The standard mounting holes enable direct assembly without secondary processing, reducing customers’ production costs while ensuring consistent quality.
The brass connecting rods demonstrate our CNC machining expertise. Precision-turned from high-conductivity brass, these components feature exact dimensional tolerances and smooth surface finishes. The one-piece construction ensures reliable electrical conductivity while resisting corrosion in demanding environments. Customization options include alternative materials like phosphor copper or aluminum, along with various plating options for enhanced performance.
Our knurled zinc sleeves solve assembly challenges through intelligent design. The mid-section knurling increases friction during installation, preventing loosening during operation. The zinc plating provides excellent corrosion resistance, extending service life in harsh conditions. These components accept multiple material options and can be customized with different wall thicknesses and lengths to suit specific applications.
Industry-Specific Applications
The automotive sector benefits from our precision components in multiple ways. Our metal shovels serve as durable scrapers in assembly lines, while the brass connecting rods provide reliable electrical connections in battery systems and electronic control units. The knurled sleeves find application in steering mechanisms and transmission systems where secure assembly is critical.
In the medical equipment industry, our components meet stringent quality requirements. The brass stretched housings provide secure encapsulation for connectors used in diagnostic devices, while the precision-stamped parts support the assembly of surgical instruments with exacting tolerances. All medical-grade components undergo specialized cleaning and packaging processes.
The electronics sector relies on our components for reliable performance in demanding environments. Our spring clips provide secure mounting for circuit boards and components, while the brass connecting rods ensure stable electrical connections in power distribution systems. The corrosion-resistant finishes protect against environmental degradation in consumer electronics and industrial control equipment.
| Product Category | Key Features | Typical Applications |
|---|---|---|
| Precision Stamping | Single-piece construction, ±0.05mm tolerance, integrated features | Metal shovels, brackets, housings, connectors |
| CNC Machining | ±0.01mm precision, complex geometries, multiple material options | Connecting rods, bushings, shafts, fittings |
| Injection Molding | High-volume production, complex shapes, tight tolerances | Enclosures, covers, connectors, handles |
Customization Capabilities
As a full-service custom metal parts manufacturer, we offer comprehensive customization options across all product lines. Our engineering team works closely with customers to develop optimal solutions for their specific requirements, considering factors such as operating environment, load conditions, and assembly processes.
Material selection plays a crucial role in component performance. We maintain an extensive material inventory including various grades of steel, stainless steel, aluminum, copper, and engineering plastics. Our material experts can recommend the most suitable options based on mechanical requirements, environmental conditions, and cost considerations.
Surface treatment customization enhances component functionality and longevity. Standard options include various plating finishes for corrosion protection and improved appearance, while specialized treatments like anodizing or passivation address specific environmental challenges. Our finishing processes comply with international standards including RoHS and REACH regulations.
FAQ
What is your minimum order quantity for custom metal parts?
We accommodate both prototype development and mass production. Our minimum order quantity starts at 100 pieces for simple components, while complex parts may require a minimum of 500 pieces depending on production setup requirements. We offer flexible solutions to support customers at all stages of product development.
How do you ensure dimensional accuracy in CNC machined components?
Our CNC machining centers are equipped with high-precision measuring instruments including CMM (Coordinate Measuring Machines) and optical comparators. We implement statistical process control (SPC) throughout production and conduct 100% dimensional inspection for critical components. Our quality system ensures all parts meet specified tolerances before shipment.
What lead time can I expect for custom metal parts production?
Production lead times depend on component complexity and order quantity. For standard components from our inventory, we can ship within 3-5 working days. Custom stamped parts typically require 2-3 weeks for tooling development and sample approval, followed by 1-2 weeks for mass production. CNC machined components usually have a 2-4 week lead time depending on complexity.
Do you provide material certificates for your components?
Yes, we provide comprehensive material certification documents including mill test reports, heat treatment certificates, and surface treatment reports for all orders. For critical applications, we can arrange third-party inspection and certification from recognized institutions like SGS or TÜV upon request.
Summary
Nanpi Haokai Hardware Products Co., Ltd. stands as a trusted partner for global businesses seeking high-quality custom metal components. With two decades of manufacturing expertise, advanced production equipment, and a skilled technical team, we deliver precision stamping, CNC machining, and injection molding solutions that meet the most demanding requirements. Our ISO 9001:2015 certified processes ensure consistent quality across all product categories, while our flexible customization capabilities support diverse applications in automotive, medical, electronics, and industrial sectors. By choosing us as your metal parts manufacturer, you gain access to reliable production, competitive pricing, and dedicated technical support throughout your project lifecycle.