Established in 2000, Nanpi Haokai Hardware Products Co., Ltd. has evolved into a leading manufacturer of custom metal components in North China. Located one kilometer from the Beijing-Shanghai Expressway with convenient access to Tianjin Port, our 3,000㎡ facility houses advanced production equipment including 30+ stamping presses (30-250 tons), 30+ CNC machining centers, and automated injection molding machines. With 70+ skilled employees including 16 engineers and 7 senior technicians, we deliver precision hardware solutions to global clients in automotive, medical, electronics, and industrial sectors.
Core Product Capabilities
Our comprehensive manufacturing capabilities cover three main product categories:
1. Precision Metal Stamping Components
Specializing in complex stamping parts from 0.1mm to 10mm thickness, our production includes:
- Metal shovels: One-piece stamped construction with reinforced ribs and smooth contours, available in cold-rolled steel, stainless steel, aluminum, and copper alloys. Customizable with standard mounting holes for immediate assembly.
- Brass拉伸铜壳 (connector terminals): Seamless deep-drawn housing with precise dimensional control, supporting gold/silver/nickel plating for high-conductivity applications in aerospace connectors and新能源 equipment.
- Standard elastic clips: Mass-produced through progressive stamping with heat treatment for optimal hardness-elasticity balance, available in various materials with anti-corrosion coatings.
Our stamping workshop maintains ±0.05mm tolerance control through automated feeding systems and in-line quality inspection. Minimum order quantities start from 1,000 pieces with 15-day prototype delivery.
2. CNC Machined Components
The CNC department specializes in high-precision parts with complex geometries:
- Brass connecting rods: One-piece turned components with ±0.01mm dimensional accuracy, featuring smooth surface finishes (Ra≤0.8μm) and customizable material options including phosphor bronze and aluminum.
- Precision knurled bushings: CNC-turned metal sleeves with middle knurling for enhanced friction, zinc-plated for corrosion resistance, supporting customization of bore diameter (3-50mm) and length (5-200mm).
- Custom shafts: Multi-axis machined components with tight concentricity requirements, serving as critical motion components in industrial equipment and automotive systems.
Equipped with Mazak and Citizen CNC lathes, our machining capabilities support prototype development within 7 days and volume production up to 100,000 pieces/month.
3. Injection Molded Parts
Our plastic injection division offers:
- Custom housings: Engineering-grade resins including PA66, POM, and PC/ABS with mold flow analysis for optimal part design
- Overmolding solutions: Two-shot molding for metal-plastic hybrid components with precise bonding strength
- Insert molding: Integration of metal inserts during molding process for enhanced structural integrity
With 12 injection machines (80-300 tons) and Class 100,000 cleanroom capabilities, we produce molded parts meeting automotive (IATF 16949) and medical (ISO 13485) standards.
Quality Assurance System
As an ISO 9001:2015 certified manufacturer, we implement comprehensive quality control:
| Control Stage | Inspection Method | Acceptance Criteria |
|---|---|---|
| Incoming Materials | Spectral analysis, hardness testing | Material certificate verification, ASTM/DIN standards |
| In-process | First-article inspection, SPC control charts | CPK≥1.33 for critical dimensions |
| Final Inspection | CMM measurement, functional testing | 100% dimensional check for small batches, AQL 0.65 for mass production |
Our calibration lab maintains traceability to national standards for all measuring equipment, with monthly verification cycles for critical instruments.
Customization Capabilities
We provide full-cycle customization services from concept to production:
Material Selection
Supporting over 20 base materials including:
- Ferrous metals: Cold-rolled steel, stainless steel (304/316), spring steel
- Non-ferrous metals: Brass (C3604), phosphor bronze, aluminum (6061/7075), copper
- Engineering plastics: PA66+GF30, POM, PEEK, PC/ABS
Surface Treatments
Available surface finishes to meet different environmental requirements:
- Electroplating: Zinc, nickel, chrome, gold, silver
- Anodizing: Clear, black, colored for aluminum parts
- Chemical conversion: Passivation, black oxide, phosphating
- Powder coating: Various colors with 50-200μm thickness
Industry Applications
Our components serve critical functions in multiple industries:
Automotive Sector
Supplying to Tier 1 suppliers since 2012, our components include:
- Battery terminal connectors for EVs
- Precision bushings for transmission systems
- Custom clips for interior trim assembly
- Brass inserts for plastic housings
Medical Devices
Producing components meeting ISO 13485 requirements:
- Stainless steel surgical instrument parts
- Brass connectors for diagnostic equipment
- Custom enclosures for portable devices
- Precision shafts for optical instruments
Industrial Equipment
Supporting machinery manufacturers with:
- Custom shovels for material handling
- Knurled bushings for linear motion systems
- Brass fittings for hydraulic systems
- Custom brackets for equipment assembly
FAQ
What is your minimum order quantity for custom metal stamping parts?
Our MOQ starts from 1,000 pieces for standard designs. For complex progressive stamping parts requiring dedicated tooling, we recommend initial orders of 3,000-5,000 pieces to optimize tooling cost recovery. Smaller quantities can be accommodated for prototype development using soft tooling.
How do you ensure dimensional accuracy for CNC machined components?
We implement multiple quality control measures: 1) In-process inspection using digital calipers and micrometers 2) First-article inspection with CMM measurement 3) Final inspection with functional testing 4) Statistical process control (SPC) for critical dimensions. All measuring equipment is calibrated monthly with traceability to national standards.
What material options are available for corrosion resistance?
For metal parts, we offer: 1) Stainless steel (304/316) for general corrosion resistance 2) Aluminum with anodizing for marine environments 3) Brass with nickel plating for decorative applications 4) Carbon steel with zinc plating (5-20μm thickness) for indoor use. For plastic parts, we recommend PA66+GF30 or PEEK for chemical resistance.
How long does it take to develop custom components?
The development cycle depends on complexity: 1) Simple stamping parts: 7-10 days for prototype 2) Progressive stamping parts: 15-20 days including tooling 3) CNC machined components: 5-7 days for prototype 4) Injection molded parts: 25-30 days including mold making. We provide DFM analysis within 3 working days after receiving drawings.
What surface treatments can you apply to metal parts?
Our surface treatment capabilities include: 1) Electroplating: Zinc, nickel, chrome, gold, silver 2) Anodizing: Clear, black, colored for aluminum 3) Chemical conversion: Passivation, black oxide, phosphating 4) Powder coating: Various colors with 50-200μm thickness 5) Painting: Wet paint with custom color matching. All treatments meet RoHS and REACH requirements.
Summary
Nanpi Haokai Hardware stands as a comprehensive solution provider for custom metal components, combining 24 years of manufacturing expertise with ISO 9001:2015 certified processes. Our vertically integrated production covers material selection, precision machining, surface treatment, and quality assurance, enabling us to deliver components that meet stringent international standards. With capabilities spanning metal stamping, CNC machining, and injection molding, we serve diverse industries including automotive, medical, and industrial equipment manufacturing. Our commitment to continuous improvement and customer-centric service ensures reliable supply of high-quality components that help clients reduce costs and improve product performance in global markets.