As the primary manufacturer and supplier of stainless steel doors, we provide high-quality custom door services. We offer flexible design solutions to ensure your product meets the needs of various settings.
Core Advantages of Stainless Steel as Door Material
QD’s stainless steel offers these advantages:
Corrosion Resistance
The stainless steel surface has a passivation film. This thin layer is made of chromium oxide. It effectively blocks oxygen and moisture, preventing rust formation.
| Advantage | Description | Suitable Environment |
| Passivation Film Protection | Chromium oxide layer forms a dense barrier. It prevents electrochemical corrosion. | Coastal areas, industrial zones, high humidity environments |
| Resists Pitting and Crevice Corrosion | Alloy elements (like molybdenum) enhance local corrosion resistance. | Chemical plants, food processing plants, etc. |
Stainless steel doors need no extra coating. This reduces maintenance costs. Compared to ordinary steel doors, stainless steel doors maintain their appearance and function even in harsh environments.
Structural Strength and Security
Stainless steel offers high strength and hardness. Its tensile strength can reach 500-1000 MPa, significantly higher than regular steel.
High Strength and Hardness: Through cold working or heat treatment, the door can withstand external impacts, such as forced prying.
Anti-pry Design: Its one-piece structure minimizes weak points. Compared to welded doors, cast doors offer greater integrity and are harder to break.
Safety Certification: QD’s stainless steel doors meet international safety standards. They are suitable for high-security locations like banks and warehouses.
Low Maintenance & Long Service Life
QD stainless steel doors do not require painting. Daily cleaning only needs mild detergent and water.
Low Maintenance Cost: No regular painting or anti-rust treatment is needed. This saves time and resources.
Long Service Life: Under normal conditions, stainless steel doors can last over 30 years.
Environmental Friendliness: Stainless steel is fully recyclable.
QD’s Two Casting Processes
Precision Casting (Lost-Wax Method)
This process is suitable for producing door panels and decorative components with complex patterns, reliefs, or fine details. It achieves high precision and good surface quality, reducing the need for subsequent machining.
Process Flow:
- Create wax patterns: Make precise wax models based on the design.
- Assemble and build shell: Assemble the wax patterns, then coat them with ceramic slurry to form a shell.
- Dewax and sinter: Heat to remove the wax, leaving a cavity, then sinter to harden the shell.
- Pour and clean: Pour molten stainless steel into the cavity. After cooling, remove the shell to get the final product.
Application Scenarios: High-end residential entrances, hotel main doors, artistic decorative doors.
Our Advantage: We use CNC technology to aid design. This ensures clear pattern details and a smooth, flawless surface.
Sand Casting
Suitable for large door frames, structural components, and specially shaped doors. This process offers high flexibility and cost-effectiveness for single pieces or small batch production.
Process Flow:
- Create a pattern: Make a wood or metal model based on the door design.
- Molding and pouring: Place the pattern in a flask, fill with molding sand to form a cavity, then pour molten stainless steel.
- Cooling and cleaning: After cooling, remove the casting. Perform cleaning and surface treatment.
Application Scenarios: Industrial doors, custom arched doors, non-standard size doors.
Our Advantage: We use simulation software to optimize the gating system. This reduces defects and improves yield.
Enhanced Structural Performance
QD can integrate internal reinforcing ribs directly into the door structure during casting. This enhances the overall structural performance. The table below compares cast structures and welded structures:
| Property | Cast Structure | Welded Structure |
| Integrity | Formed as one piece. No seams. Uniform stress distribution | The weld seam can easily become a weak point |
| Fatigue Resistance | High. Suitable for frequent use environments | Lower. Weld seam may develop fatigue cracks |
| Customization Flexibility | High. Can integrate complex internal structures | Limited. Depends on assembly process |
Our cast door bodies perform better in wind resistance, earthquake resistance, and anti-theft performance. They are especially suitable for extreme environments.
Custom Services Offered by QD
We are customer-focused and provide comprehensive custom services.
Custom Dimensions & Shapes
We accept orders for non-standard sizes, curved doors, and special-shaped doors to meet unique spatial requirements.
Curved doors: Suitable for arched entrances. They enhance architectural aesthetics.
Oversized doors: Used in factories or stadiums. They have a maximum width of up to 5 meters.
QD Assurance: We use CAD/CAM software for design verification. This ensures precise dimensions.
Custom Surface Finishes
We offer various surface treatment options to match different decorative styles.
| Treatment Type | Effect | Suitable Applications |
| Brushed | Creates a fine linear texture. Resists fingerprints. | Modern homes, offices |
| Mirror Polished | Provides a highly reflective surface. Enhances the sense of space. | Commercial lobbies, art venues |
| Sandblasted | Creates a matte finish. Resists scratches. | Industrial settings, outdoor doors |
| Titanium Plated | Applies a colored coating. Combines fashion with durability. | Upscale hotels, custom residential projects |
Functionality and Design Integration
We can cast brand logos or specific patterns directly onto the door. We also integrate hardware mounting structures for locks and hinges.
Design Integration: Customers can provide drawings or concepts. We transform them into production-ready designs.
Enhanced Functionality: We can integrate features like smart lock systems or fire-resistant structures. This improves the door’s practicality.
QD Advantage: We maintain close communication with clients and manage the entire process from design to delivery.
QD Stainless Steel Doors
Contact Us
We are QD Foundry. We specialize in the R&D, production, and customization of stainless steel doors. Our team has 20 years of industry experience. Whether you need standard products or customized designs, we will meet your requirements with professional commitment and service. Please feel free to contact QD for your needs.
FAQ
1. What is the price of stainless steel doors?
The cost depends on size, process, and custom requirements. Custom doors require a quote based on the design. We offer free consultation and budget estimates.
2. How long is the custom production cycle?
It typically takes 2-4 weeks. The exact time depends on design complexity and order quantity. We confirm the schedule with you in advance.
3. Are stainless steel doors suitable for outdoor use?
Yes. They resist corrosion and UV rays. They are ideal for outdoor environments. We recommend surface treatments to enhance durability.
4. What are the advantages of QD’s casting process?
We use precision casting and sand casting. This ensures the door structure is integrated and highly precise. Compared to welded doors, cast doors are more durable and secure.
5. What should be noted for installation and maintenance?
Installation must be done by professionals. We provide guidance. For daily maintenance, just wipe with a soft cloth and neutral cleaner. Avoid scratches from hard objects.