
Steel Security Door
Introduction
Modular house Steel security door – Designed for scalable container homes, modular buildings, equipment rooms. We use high-quality cold-rolled steel sheets to create a modular steel frame structure, combined with explosion-proof locks and smart electronic locks, supporting multiple authentication methods including keys, passwords, and fingerprints. It offers flexible installation, robust security, and intelligent management.
Wanzhi Steel offers a variety of steel security doors: single-leaf doors, double doors, arched doors, fire doors, and more, with multiple opening methods including swing, sliding, and tilt-and-turn. If you are interested, please contact us for more information.

Specifications
| Item | Specifications |
| Standard Door Dimensions | Single door: 860/960×2050mm, Double door: 1200×2050mm (Customization available) |
| Door Thickness | 45mm, 50mm, 55mm (Optional) |
| Panel Material | Cold-rolled steel sheet / hot-dip galvanized steel sheet |
| Filling Material | Honeycomb aluminum core / fireproof rock wool (Optional) |
| Lock Grade | Mechanical lock: Class C, Smart lock: Multiple options |
| Number of Hinges | 3-4 locks, load capacity ≥150kg |
| Surface Treatment | Roller Coating or Spray Coating |
| Coating Thickness | 60-80μm |



Security Level and Packaging
| Safety rating | Grade C, Grade A/B, Special Grade, Grade B, Super C |
| Seismic resistance rating | 7 degrees – 9 degrees |
| Fire resistance rating | Grade A: ≥1.5h; Grade B: ≥1.0h; Grade C: ≥0.5h |
| Packaging and transportation | PE shockproof + VCI rustproof + wooden crate |
| Environmental adaptability | Operating temperature: -30℃ to +60℃; humidity: 10%-95% (non-condensing) |
| Delivery time | 15-18 days |
Whole House Door System Configuration
| Space | Recommended configuration |
| Entrance door/Exterior door | Container-specific security doors |
| Bedroom door | Wood grain veneer + sound insulation filling + silent lock |
| Bathroom door | Frosted tempered glass + stainless steel frame + waterproof hardware |
| Kitchen/Balcony door | Transparent glass doors or interior doors with glass windows |
| Office/Meeting room door | Fire-resistant finish + sound-insulating filling |
| Server room, storage room | Fire doors or simple interior doors |



Four-Level Coating Anti-Corrosion System
1. Substrate: High-quality galvanized steel sheet (Z30-Z275).
2. Pretreatment: Phosphating/nano-ceramic conversion coating.
3. Coating: High-performance polyester powder coating or HDP/SMP/PVDF/PE powder coating.
4. Process: German brand ‘TIGER’ powder, passed 2000-hour salt spray test.
Smart and Integrated Options
- Locks: Mechanical Class C locks, fingerprint/password/card smart locks, remote management via mobile app.
- Hardware: German brands ‘SIEGENIA’, ‘HOPPE’, or equivalent.
- Glass: Xinyi/Nanbo tempered, laminated, Low-E, fire-resistant glass.
- Certification Support: Provides complete test reports and certification guidance to assist in project acceptance.



Types of Steel Security Doors for Entry
1. Container House Dedicated Security Door
Made of 16-20GA galvanized steel sheet, 10-point interlocking lock, pre-drilled mounting holes for containers. Factory pre-assembled, requiring only 4 bolts for on-site fixing. Anti-deformation design, automatically reinforced and locked for long-distance transport.
2. Modular Building-Specific Doors
We provide mass-produced standardized security doors for modular hotels, apartments, and schools. Pre-installed door frame and snap-on sealing strips, with a single door installation time of ≤30 minutes. RAL color chart available.
3. Steel Fireproof Safety Door
Meets 0.5/1/2/3 hour fire resistance requirements, filled with Class A fireproof rock wool, equipped with inflatable fireproof sealing strips. Complies with Class A/B fireproof and burglarproof integrated doors according to building fire protection codes. Passes testing of national burglarproof security door standards (GB17565) and fire door standards (GB12955).


4. Hurricane-Resistant Safety Door
Passed large-scale missile impact Class D testing, withstanding wind pressure ≥140 mph; the door structure has undergone dynamic wind pressure cycle testing, maintaining airtightness and watertightness even under extreme negative pressure. Provides certified disaster preparedness products for projects in coastal, high-wind-pressure areas (such as the Philippines and Florida, USA).
5. Protective Doors for Industrial Workshops & Equipment Rooms
Door panels are made of 1.5-2.0 mm-thick epoxy-coated galvanized steel sheets, equipped with heavy-duty industrial hinges and impact plates. They can withstand occasional forklift collisions, oil corrosion, and high-frequency pushing and pulling in factory environments.
6. Construction Site Camp Safety Gate
Heavy-duty vandal-resistant security doors are designed for harsh environments such as construction sites and field camps, offering enhanced resistance to violent attacks and rust prevention, and are easy to install. Door panels are reinforced with 3 mm-thick explosion-proof steel sheets.


- Source Quality Control: Using raw materials from our own steel mill, quality is fully traceable.
- Highly Customizable: Sizes, styles, and colors can be customized, specifically for steel structure and modular buildings.
- Rugged and Durable: Integrating armor-grade physical structure, optional intelligent monitoring systems, and reinforced seismic nodes, it provides comprehensive active protection.
- Global Certifications: Supports multiple certifications, including UL, CE, EN, Chinese national standards, and Australian standards.



Selection Based on Application
| Application scenarios | Preferred Series | Key Performance Features | Recommended customization items |
| Australian/Philippines Overseas Camps | Hurricane-Resistant Doors | Wind pressure resistance certification, high corrosion resistance | Color (RAL), Left/Right On |
| Modular hotels/apartments/hospitals | Fireproof Security Doors | Fire safety inspection and batch installation | Surface wood grain effect, door closer |
| High-end container villas | Armored Entrance Doors | Ultimate safety, luxurious appearance | Panoramic glass side windows, smart home interface |
| Construction site office / container homestay | Container Doors | Sturdy and impact-resistant, quick to install | Pre-installed door locks, transport locks |
| Workshops and warehouses | Industrial Protective Doors | Wear-resistant and corrosion-resistant, large size | Sliding track, door-in-door (small door) |




Service Process
1. Requirements Analysis: Provide project drawings, environmental parameters, and certification requirements.
2. Solution Design: Provide 3D renderings, technical specifications, and load calculations within 3 working days.
3. Sample Confirmation: Standard samples can be provided, or 1:1 confirmation samples can be made upon request.
4. Production and Supervision: The entire production process is visible, and third-party inspection is supported.
5. Delivery and Support: Delivery within 15-18 days, including installation guidance videos and drawings.


Why Choose Us?
We offer not only customizable prefabricated modular container homes, but also security solutions for container homes and modular buildings, encompassing accessories, customized configurations, and integrated installation. These include steel security doors, thermally broken aluminum alloy windows, lightweight steel staircases, galvanized steel grating floors, and Clean Room Panels.
- More than just a supplier: We are a technology solutions partner with a steel mill background.
- One-stop solution: We ensure seamless compatibility between steel doors and prefabricated buildings or main structures.
- Global project experience: Our products have been applied to numerous international projects, including a mining camp in Spain, a resort in the Philippines, and a modular hospital in Libya.


Get Your Personalized Security Solution Now
Please provide the following information, and our engineering team will provide you with a preliminary solution within 12 hours:
1. Project type and location (e.g., container villas for a coastal resort in Indonesia)
2. Doorway size and number
3. Core performance requirements (e.g., must pass a 1-hour fire resistance test, typhoon resistance)
4. Budget range and timeframe
Wanzhi Steel — Starting with a door, building a trustworthy and complete space.
Get color charts and bulk quotes
Our factory is located in Shandong, China. Our products meet EU CE standards and mainly deal in expandable houses, folding houses, mobile houses, modular housing, as well as related accessories. With our attentive service and superior quality, our products are sold to over 120 countries and regions worldwide.
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