Although the security door industry has been around for many years, many consumers still lack a clear understanding of what makes a real security door. To help you make an informed decision when shopping for a security door, here's some professional knowledge that will guide you through the process.
According to national regulations, a genuine security door must be able to resist forced entry for at least 6 minutes. This means that tools like chisels, screwdrivers, or electric drills should not be able to break through it within this time frame. In contrast, "steel doors" can usually be opened in under 5 minutes. To distinguish between a real security door and a steel door, look for a "steel seal" on the door. This seal indicates the security level and is typically marked with letters such as A, B, C, or D. These markings are usually found in the upper corner of the inner hinge, about 160 cm from the ground.
Police officials suggest that even D-class security doors are sufficient for most households' daily needs. However, it’s important to note that regardless of whether your door has an A-level or B-level lock, if it isn’t properly locked, it offers no protection. If you haven't checked the circular stamp near the top left of your door, you might be unknowingly using a steel door instead of a real security door. During the recent Science and Technology Publicity Week in Taiyuan, the issue of door and window security became a hot topic. Experts, police, and dealers shared their insights on how to identify real and fake security doors.
The steel plate thickness varies depending on the security level. Even the lowest grade, which is considered Ding class, has a minimum thickness of 1.5 mm. The national standard divides security doors into four levels: A, B, C, and Ding. Each level has different anti-theft requirements. For example, Class A doors must withstand forced entry for at least 30 minutes, while Class D doors need to last at least 6 minutes. Many residents in Taiyuan mistakenly refer to steel doors as security doors, but these do not offer real anti-theft protection.
Some people may worry that the filler material inside a security door is just paper, thinking it might be a cheap or fake product. However, the filler used is actually a special type of paper approved by national testing agencies. It serves as insulation and soundproofing material, making it both safe and effective. In southern regions, honeycomb paper is commonly used, while northern areas often use polyphenylene materials. Both are recognized for their quality and performance.
When choosing a security door, pay attention to the steel plate thickness and the lock mechanism. Thicker doors don’t always mean better security. Also, it’s important to understand that fire doors and security doors are entirely different. Fire doors are designed for fire resistance and ease of escape, while security doors focus on preventing unauthorized access. The higher the security level, the harder it is to enter, which may not align with fire safety standards.
Currently, the cheapest Ding-class security doors in the provincial capital cost over 800 yuan. Some retailers emphasize the thickness and weight of the door as selling points, but experts say these factors have little to do with actual anti-theft performance. According to the national standard implemented in 2008, there are specific requirements for steel plate thickness and lock levels, but the filler material is not regulated. Despite this, honeycomb paper is widely used and approved by testing institutions across the country.
In summary, it’s essential to understand the true nature of security door products. Having the right knowledge helps you make smarter choices and ensures you get a reliable and secure door that meets your needs.
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