How Are Steel Blind Doors Manufactured? A Step-by-Step Look into the Process

https://www.jindoor.com/how-are-steel-blind-doors-manufactured.html

Steel blind doors are widely used in industrial and commercial buildings for their strength, durability, and security performance. Understanding how these doors are made helps appreciate the craftsmanship and precision behind every product. Shanghai Jindoor Technology Co., Ltd., a professional manufacturer of steel doors, follows a rigorous production process to ensure consistent quality and performance.

1. Sheet Cutting

The manufacturing process begins with high-quality steel sheets. These sheets are carefully measured and cut using precision cutting machines to achieve accurate dimensions. This step ensures that all subsequent forming and assembly processes proceed smoothly and maintain structural integrity.

2. Bending and Forming

Next, the cut steel plates undergo bending and shaping through advanced press brakes. This stage forms the door frame and panel structure according to the required specifications. The precision of the bending process is critical, as it determines the final fit and strength of the door.

3. Welding

The bent components are then welded together to create a solid door body. Skilled welders or automated welding robots ensure uniform weld seams and high structural stability. This guarantees that the steel blind door can withstand long-term use and maintain its form even under heavy impact or extreme conditions.

4. Surface Treatment and Spraying

After welding, the door surface is thoroughly cleaned, treated, and coated. This usually involves degreasing, sandblasting, and applying a corrosion-resistant primer. The final powder spraying or paint coating not only enhances the appearance but also provides excellent resistance to rust, moisture, and wear.

5. Assembly and Quality Inspection

In the final stage, accessories such as hinges, locks, and sealing strips are assembled. Each door undergoes a detailed inspection process to check for dimensional accuracy, surface finish, and functional performance before packaging and delivery.

Shanghai Jindoor Technology Co., Ltd. ensures every steel blind door reflects superior craftsmanship and reliability, offering customers durable and aesthetically pleasing solutions for security and architectural applications.

https://www.jindoor.com/how-are-steel-blind-doors-manufactured.html
Shanghai Jindoor Technology Co., Ltd.