Established in 2000 and located in Nanpi County, Hebei Province – just one kilometer from the Beijing-Shanghai Expressway – Nanpi Haokai Hardware Products Co., Ltd. has evolved into a leading manufacturer of custom metal components. With over two decades of expertise in precision metalworking, our company combines strategic geographical advantages with advanced production capabilities to serve global clients in新能源 (new energy), automotive, electrical appliances, medical equipment, instrumentation, and mechanical manufacturing industries.
Comprehensive Manufacturing Capabilities
Our 3,000-square-meter facility houses state-of-the-art equipment including 30+ stamping presses ranging from 30 to 250 tons, 30+ CNC machining centers (including automatic lathes and Swiss-type CNC machines), and advanced injection molding machines. This comprehensive equipment park enables us to handle projects from simple stamping parts to complex CNC machined components with micron-level precision.
The production team comprises 70 skilled professionals, including 16 engineers and 7 senior technicians. Our vertical integration model covers every stage from product design and prototyping to mass production and after-sales service. This approach ensures complete control over quality while maintaining competitive pricing – a key advantage that has helped us secure long-term partnerships with Fortune 500 companies across 30+ countries.
Core Product Portfolio
Our product range focuses on three main categories:
1. Precision Stamping Components
Specializing in stainless steel spring production, our stamping capabilities extend to complex shapes with tolerances as tight as ±0.02mm. The metal shovel series exemplifies our expertise – manufactured from single-piece material through progressive die stamping, these components feature reinforced structures, smooth contours, and pre-drilled mounting holes that eliminate secondary processing. Customizable in materials including cold-rolled steel, stainless steel, aluminum alloy, and copper, these shovels suit various industrial equipment applications.
2. CNC Machined Parts
Our brass connecting rods demonstrate the precision achievable through CNC turning. Manufactured from high-conductivity brass with optional phosphor bronze or aluminum alternatives, these components feature:
- ±0.01mm dimensional accuracy
- Ra0.8 surface finish
- Customizable length up to 300mm
- Optional plating finishes (tin, zinc, nickel)
The one-piece construction ensures reliable performance in connectors, automotive components, and medical devices where electrical conductivity and corrosion resistance are critical.
3. Precision Injection Molding
For complex plastic components, our injection molding department produces parts weighing from 0.1g to 2kg with cycle times as short as 8 seconds. The zinc-plated steel bushings series showcases our non-standard customization capabilities – featuring knurled exteriors for enhanced grip and precision-bored interiors for exact fitment. These bushings are available in multiple materials with optional heat treatment for improved wear resistance.
| Product Category | Material Options | Tolerance Range | MOQ |
|---|---|---|---|
| Stamping Parts | Stainless steel, carbon steel, brass, aluminum | ±0.02-0.1mm | 1,000 pcs |
| CNC Parts | Brass, steel, aluminum, plastic | ±0.01-0.05mm | 500 pcs |
| Injection Parts | PA, POM, PC, ABS, PP | ±0.05-0.2mm | 2,000 pcs |
Quality Assurance System
As an ISO 9001:2015 certified manufacturer, we implement rigorous quality control measures at every production stage:
- Incoming material inspection with spectral analysis
- In-process inspection using CMM and vision measurement systems
- Final inspection with 100% dimensional checking for critical dimensions
- Salt spray testing for corrosion resistance validation
- Fatigue testing for spring components
Our quality department maintains complete traceability through batch numbering systems, ensuring rapid response to any quality concerns. The average defect rate remains below 0.3%, significantly below industry averages.
Customization Process
We specialize in turning customer concepts into production-ready components through our streamlined process:
- Design Review: Our engineering team analyzes 3D models and drawings to identify potential manufacturing issues
- Material Selection: Based on application requirements, we recommend optimal materials considering factors like strength, corrosion resistance, and cost
- Prototyping: Using rapid tooling techniques, we deliver functional prototypes in 5-10 days for form-fit-function validation
- Production Preparation: Finalize process parameters, quality inspection standards, and packaging requirements
- Mass Production: Implement automated production lines with real-time quality monitoring
This approach enables us to complete new product development cycles in 3-6 weeks, depending on complexity.
FAQ
What is your minimum order quantity for custom stainless steel springs?
Our MOQ starts at 1,000 pieces for standard designs. For completely new designs requiring dedicated tooling, we recommend initial orders of 3,000-5,000 pieces to amortize tooling costs effectively. Smaller quantities can be accommodated with slightly higher unit pricing.
How do you ensure dimensional consistency in mass production?
We implement multiple control measures: 1) Using high-precision progressive dies with self-lubricating guides 2) Employing servo-driven stamping presses with force feedback control 3) Conducting in-line inspection with automated vision systems 4) Performing regular die maintenance every 50,000 strokes.
What surface treatments are available for your metal components?
Our standard finishes include zinc plating, nickel plating, chrome plating, anodizing, passivation, and powder coating. For specialized requirements, we offer black oxide coating, electropolishing, and PVD coating. All plating processes comply with RoHS and REACH regulations.
How do you handle design modifications during production?
Minor modifications can be implemented immediately through our quick-change tooling systems. For significant design changes, we assess the impact on existing inventory and tooling, then provide options including: 1) Running current design to deplete inventory before switching 2) Modifying tooling with cost sharing 3) Creating new tooling if economically justified.
What is your lead time for first samples?
For existing tooling modifications: 3-5 days. For new progressive die stamping projects: 10-15 days including die manufacturing. For CNC machined components: 5-7 days after design approval. Injection molding samples require 12-18 days for mold making and sampling.
Summary
Nanpi Haokai Hardware stands as a comprehensive solution provider for custom metal components, combining 20+ years of manufacturing expertise with modern production facilities. Our specialization in stainless steel spring production, precision stamping, CNC machining, and injection molding enables us to serve diverse industries with components meeting exacting standards. With ISO 9001 certification, a skilled engineering team, and flexible production capabilities, we deliver reliable quality at competitive prices while maintaining short lead times. Whether you require standard components or fully customized solutions, our vertical integration model ensures complete control from design to delivery, making us the preferred partner for global manufacturers seeking consistent, high-quality metal components.