The primary purpose of a security door is to provide protection against theft, with additional functions such as aesthetics and interior design. When purchasing a security door, it's essential to prioritize its anti-theft performance and overall quality. In this article, we'll go over key information about security doors and offer a helpful shopping guide to assist you in making the right choice.
Let’s start by understanding the structure and features of security doors, especially those commonly found in Japan:
1. **Door Size and Opening Direction**
For residential use, there are standard sizes for security doors, usually represented by four digits indicating the width and height of the door opening. For example, a door that is 1 meter wide and 2.1 meters tall would be labeled as 1021. Common specifications include 0920, 0921, 1020, and 1021. The door can open inward or outward, and each direction has left or right configurations, which should be considered when selecting the right model.
2. **Surface Quality and Safety Features**
A high-quality security door must meet national safety standards. The steel frame should be at least 2 mm thick, while the front and back panels of the door leaf are typically between 0.8 to 1 mm. These doors often have a reinforced structure, including a skeleton and support plates, which enhance their resistance to forced entry and meet required security levels.
3. **Hardware Components**
- **Locks**: The lock is the most critical component of a security door. It should be certified by a national authority and equipped with features like anti-drill, anti-saw, anti-pick, and anti-impact protection. There are two main types: single-point locks and multi-point locks. Multi-point locks offer better security by engaging multiple points around the door frame.
- **Hinges**: Hinges connect the door to the frame and should also have some anti-theft properties. They are generally either built-in (for exterior doors) or external (for interior doors). The hinge shaft diameter should be at least 12 mm, and the steel plates should be welded properly for added strength.
**When buying a security door, consider these four important factors:**
1. **Certification and Compliance**
Ensure the door has been tested by an official certification body and comes with a safety technology prevention product permit from the local public security department.
2. **Security Level**
Security doors are categorized into A, B, and C levels, with C being the highest. Most household doors on the market are A-level, suitable for general use. An A-level door should resist forced entry for at least 15 minutes using basic tools or prevent a 615 cm² hole from being cut through.
3. **Strong Locking System**
Look for doors with three-point or five-point locking systems. These locks not only secure the door but also engage the top and bottom bars for added stability. Many doors also include rubber seals to reduce noise and improve insulation.
4. **Craftsmanship and Finish**
Inspect the door for welding defects, check the fit between the door and frame, ensure smooth operation, and verify that the paint or plating is even and durable.
Additionally, consider the brand reputation and look for the "FAM" logo, manufacturer name, and implementation standards on the door. Purchasing from a trusted brand ensures quality and after-sales service.
If you're planning to buy a security door, this guide should help you make an informed decision. If you have any questions, feel free to leave a comment below, and we’ll respond as soon as possible. Thank you for visiting our site—stay tuned for more informative articles.
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