Manufacturing Solutions for Complex Shapes, Precision Forming, High Strength & Premium Bag Hardware
Precision Die Casting, Stamping, Forging & Polishing Technologies to Match Every Design & Structure
Complete In-House Forming & Finishing Capabilities
Different manufacturing processes match different structures, complexity levels, strength requirements and cost budgets.
At Junhao Hardware, we own complete in-house manufacturing capabilities covering every core forming and finishing process for handbag and luggage hardware. With 19+ years of specialized production experience, we master mature and standardized manufacturing technologies to deliver stable, precise and consistent metal parts.
Our manufacturing solution system includes four core processes: High Pressure Die Casting, Precision Stamping, Cold Forging and Multi-Stage Precision Polishing. Different processes match different product structures, complexity levels, strength requirements and cost budgets.
Unlike trading companies that outsource production, we complete 100% of core processes in our own factory. This full control guarantees stable quality, accurate tolerance, on-time delivery and flexible customization for global brands, leather goods factories and designer collections.
All manufacturing processes strictly follow ISO 9001 quality management standards, with full inspection at every stage to ensure zero defect output.
Four Processes for Different Structure, Strength & Surface Requirements
High Pressure Die Casting
Die casting is the most widely used forming process for complex-shaped bag hardware. It injects molten zinc alloy or brass into high-precision steel molds under high pressure to form detailed three-dimensional structures.
Key Advantages
- Supports extremely complex shapes, 3D reliefs, embossed logos and irregular curved structures
- High dimensional accuracy and consistent repeatability for mass production
- Smooth surface base for high-quality polishing and plating
- High production efficiency for large batch orders
- Suitable for zinc alloy, brass and most non-ferrous metals
Handbag locks, buckles, D-rings, logo plates, decorative hardware and all complex 3D structured metal fittings.
Precision Stamping
Stamping is a high-efficiency forming process for flat and thin hardware parts. It cuts, punches and bends metal sheets with precision dies to produce uniform standard parts.
Key Advantages
- Ultra-high production speed and low unit cost for mass production
- Precise thickness control and sharp clean edges
- Excellent flatness and dimensional consistency
- Suitable for thin, simple and symmetrical hardware structures
- Works with iron, stainless steel, brass and zinc alloy sheets
Flat buckles, simple rings, rivets, eyelets, reinforcing plates, standard strap connectors and regular-shaped mass-produced hardware.
Cold Forging
Forging forms metal parts through extrusion and impact pressure at room temperature. It compresses metal grain structure to achieve higher density, stronger hardness and better load-bearing performance.
Key Advantages
- Higher structural strength and tensile resistance than casting parts
- Dense internal structure, no porosity or air holes
- Excellent wear resistance and long service life
- Stable size and high surface finish accuracy
- Ideal for load-bearing and safety-related hardware
Heavy-duty hooks, load-bearing rings, chain links, tactical bag hardware and high-strength structural fittings.
Multi-Stage Precision Polishing
Polishing is the key post-forming process that determines final surface quality. We combine mechanical grinding, barrel polishing and manual buffing to achieve flawless smooth metal surfaces.
Key Advantages
- Removes all burrs, sharp edges, mold lines and surface flaws
- Achieves mirror smooth, satin matte or brushed texture
- Prepares perfect base surface for subsequent plating and finishing
- Multi-stage grading ensures uniform smoothness for every piece
- Manual fine polishing for high-end visible hardware parts
All visible hardware parts, high-end luxury fittings, logo plates and products requiring premium surface texture.
Match the Process to Structure, Strength, Cost & Surface Requirements
Complex 3D Shapes
Detailed logos, decorative hardware → Die Casting
Flat Thin Parts
Mass standard accessories, low cost needs → Stamping
Heavy Load-Bearing
High strength, long-life structural parts → Forging
Premium Visible Parts
High-end surface requirements → Precision Polishing + premium finishing
From Mold Making to Finished Hardware
Complete in-house process control supports accurate tolerance, stable batch quality and flexible custom production.
CNC Mold Machines
Advanced equipment supports mold making and custom tooling development.
High-Pressure Die Casting Machines
Supports complex-shaped hardware with repeatable mass-production accuracy.
Precision Stamping Lines
High-efficiency forming for standard flat and thin hardware parts.
Automatic Polishing Systems
Combined with manual fine polishing for high-end visible hardware parts.
Full In-House Control for Quality, Lead Time & Cost
Full in-house production: No outsourcing, complete control over quality, lead time and cost
Advanced equipment: CNC mold machines, high-pressure die casting machines, precision stamping lines and automatic polishing systems
Standardized workflow: SOP for every process, stable batch consistency
Precision tolerance control: Strict dimensional accuracy matching brand assembly standards
Fast sampling: 2–3 days for existing designs, rapid prototype for new custom molds
Flexible production: Supports small trial runs, medium batch cooperation and large-scale brand mass production
Inspection, Compliance & Full Batch Traceability
ISO 9001
All manufacturing processes comply with ISO 9001 quality management system requirements.
100% Stage Inspection
Every production stage implements 100% inspection: dimensional check, appearance check, structural test and functional verification.
RoHS & REACH
All materials and processes meet RoHS, REACH and international environmental export standards.
Full Traceability
Complete production records are kept for every batch for full traceability.
Engineering Support Across the Complete Manufacturing Chain
19+ years focused on handbag and luggage hardware manufacturing
Complete process chain from mold making to finished product
Multiple forming technologies to match all design complexity levels
Strict process control for stable mass production quality
Professional engineering team for technical optimization and feasibility evaluation
Factory direct pricing with no middleman markup
Strict confidentiality for exclusive brand designs and molds
Questions Buyers Ask Before Choosing a Manufacturing Process
These answers help buyers compare process suitability, sampling, production scale, inspection and compliance before starting a custom bag hardware project.
01How do I choose between die casting, stamping, forging and precision polishing?
Choose the process according to structure, strength, cost and surface requirements. Complex 3D shapes, detailed logos and decorative hardware are best matched with die casting. Flat and thin standard parts with high-volume and cost requirements are better suited to stamping. Heavy load-bearing and long-life structural parts are better suited to forging. High-end visible parts that require premium surface quality should use precision polishing together with the appropriate finishing process.
02When is high pressure die casting the best manufacturing solution?
High pressure die casting is best for complex-shaped hardware that requires three-dimensional structures, embossed logos, relief details or irregular curves. It is widely used for handbag locks, buckles, D-rings, logo plates, decorative hardware and other complex 3D metal fittings, while also supporting dimensional repeatability for mass production.
03Which products are most suitable for precision stamping?
Precision stamping is suitable for flat, thin, simple and symmetrical hardware structures. Typical applications include flat buckles, simple rings, rivets, eyelets, reinforcing plates, standard strap connectors and other regular-shaped mass-produced hardware. It is especially useful when buyers require high production speed, controlled thickness and low unit cost.
04When should a buyer choose cold forging instead of casting?
Cold forging is recommended when structural strength, tensile resistance, density, wear resistance and load-bearing performance are more important than complex decorative geometry. It is suitable for heavy-duty hooks, load-bearing rings, chain links, tactical bag hardware and other high-strength structural fittings.
05Why is multi-stage precision polishing important for premium hardware?
Polishing determines the quality of the surface before plating and finishing. Junhao combines mechanical grinding, barrel polishing and manual buffing to remove burrs, sharp edges, mold lines and surface flaws. The process can create mirror-smooth, satin-matte or brushed textures and is especially important for visible luxury hardware, logo plates and products requiring a premium surface.
06Are Junhao’s core manufacturing processes completed in-house?
Yes. Junhao states that 100% of its core manufacturing processes are completed in its own factory rather than outsourced. This gives the factory direct control over quality, tolerance, production scheduling, lead time, customization and cost across the core manufacturing chain.
07What materials can be used with these manufacturing processes?
Material compatibility depends on the process. Die casting is suitable for zinc alloy, brass and most non-ferrous metals. Precision stamping works with iron, stainless steel, brass and zinc alloy sheets. Junhao’s engineering team evaluates the required structure and material together before recommending the manufacturing route.
08Can Junhao support prototypes, trial runs and large-scale production?
Yes. The manufacturing system supports small trial runs, medium-batch cooperation and large-scale brand mass production. The process route can therefore be selected not only by product structure, but also by the required production volume and commercial stage of the project.
09How fast can existing hardware designs be sampled?
For existing designs, Junhao states a sampling time of 2–3 days. New custom molds can be supported with rapid prototyping, while the exact schedule depends on the new design, structure and mold requirements.
10How is manufacturing quality controlled during production?
Manufacturing follows ISO 9001 quality management requirements. Every production stage implements 100% inspection covering dimensional checks, appearance checks, structural tests and functional verification. Standardized SOPs and precision tolerance control are also used to maintain batch consistency.
11What environmental and traceability standards are supported?
Junhao states that its materials and manufacturing processes meet RoHS, REACH and international environmental export standards. Complete production records are kept for every batch to support full traceability.
12What should I send to start a custom manufacturing project?
You can send design drawings, physical samples or detailed product requirements. The engineering team will evaluate feasibility and recommend the manufacturing solution that best balances quality, performance and cost, then provide the appropriate quotation and lead-time information. Junhao also states that exclusive brand designs and molds are handled under strict confidentiality.
Get Professional Manufacturing Solutions for Your Hardware Design
Whether you have a simple flat part or a complex 3D custom hardware design, our engineering team will provide the optimal manufacturing solution with accurate quotation and lead time. Send your drawings or samples to start your project.
