Security Door

1. Why and Where do I Need security doors medium.com/@steeldoor/why-and-where-do-i-need-security-doors-d45112aaabb0 Protection from intrusion is the primary purpose of having Security doors in the residential, commercial, and industrial buildings. The other reasons could be securing the interiors of buildings from fire, floods, hailstorms, and other external elements. They are also highly useful in maintaining privacy in hospitals, hotels, meeting halls, etc. The most commonly used material is pure steel or in combination with its alloys. Solid Steel Vs Hollow Steel — Usability Parameters You might have seen solid steel doors being used in ships, yards, power plants, and industrial units where the probability of attacks with explosives is the highest. Have you ever wondered about the fire-rated steel doors that are used in commercial and industrial establishments? Well, they don’t use the solid steels, rather the hollow steel doors. The outer layers are made of high-density steel sheets that could have a thickness from a few millimetres to a few inches. The different parts of the door could be sweep-gasket at the bottom, threshold sill, chrome-plated sheets, galvanised frame, and an automatic latching system. It is one type of door you may come across. Many other forms may have steel studs, profiles, etc. These doors are extensively used for providing internal and external security to the buildings. 1/4

2. Hollow steel core has to be filled with some sort of insulation and stress protection materials. The general practice is to use fillers like a honeycomb, polyethene, polyurethane, and others. Let me show you how each filler works. Steel Core Fillers — insulation and Strength Factors The basic material used for honeycomb filling is the cardboard that is cut and shaped to fill the steel-core. Their expansion and compression ratio is negligible even in the harshest internal and external conditions. The assembly of corrugated sheets ensures maximum resistance to heat and cold. They are packed and pressed to form a single structure. The number of layers depends on the hollow space between the steel sheets. They have the maximum resistance to stress and vertical load. Every corrugated board has a liner, flute, and edges. The load generally has an impact on the upper and lower sections of the honeycomb. Sometimes, the load may also be diagonal or cross-sectional. The liners don’t buckle under consistent static load or dynamic load. Hence, they are recommended for the filler materials within the security doors. The synthetic materials like polyurethane and polyethene are primarily used for insulation. Though they don’t have much value for impact resistance, the ratio is reasonably good. 2/4

3. Security and Protection — Why and When Factors Security is required where there is a threat of intrusion or attacks. It could be your home, commercial building or industrial buildings. You also need security from fire, floods, hailstorms, mob attacks and other forms of external damages. What about internal risks like hazardous materials, chemicals and radioactive substances? The personnel in the plants need security from accidental exposure. These are some of the instances when you need security. 3/4

4. Conclusion You can use security doors in every location that is prone to intrusion and environmental calamities. Steel is the most commonly used material in combination with the other metal alloys. 4/4