Class-A vault doors are required to be equipped with at least two mechanical combination locks, withstand forced-entry attacks for 30 minutes, and provide fire resistance for 2 hours. Vault doors of all classes may be configured with three sets of mechanical digital combination locks and one bank-specific lock. As long as any two sets of passwords are correctly matched and the bank-specific lock is opened, the vault door can be unlocked.

　　Customization Instructions for Stainless Steel Safe Doors:

　　1. Appearance and Structure: All steel components shall be electroplated, powder-coated, or otherwise treated for corrosion protection. The basic structure comprises a door frame, a door leaf, a strike plate, a mechanical combination lock, a dedicated lock, and a lock actuator. Depending on the application requirements, additional features such as time locks, anti-theft electronic locks, security deadbolt mechanisms, and alarm signal transmission devices may be installed.

　　2. Measurement of door frame and door dimensions: The gap between the front perimeter of the door frame and the door leaf shall not exceed 1 mm, and there shall be no gaps that allow direct line-of-sight into the interior of the door. The surface flatness of the outer surfaces of the door frame and door leaf shall not exceed 2 mm, and the surface flatness of the inner surfaces shall not exceed 4 mm.

　　3. Inspection of weld joints connecting to the wall: The safe door shall have no fewer than six weld joints on each side and no fewer than three on the top frame.

　　4. Flexibility: In addition to supporting the weight of the door leaf, the door hinges shall be adjustable. Under an external force not exceeding 80 N, the door leaf shall open and close smoothly. The door latch and actuator shall operate with ease; under a force not exceeding 30 N, the door leaf can be locked or unlocked manually via the concealed switch.

　　The stainless-steel vault door is entirely clad in matte-patterned stainless-steel panels, delivering a sophisticated and imposing visual impression while also offering exceptional durability and structural integrity—meeting the most fundamental requirements for a vault door. Moreover, this material is more cost-effective than alternatives. The interior of the stainless-steel vault door is filled with a specialized fire-resistant material, and the outer stainless-steel layer itself boasts excellent high-temperature and heat-resistance properties; together, these features ensure outstanding fire protection. In the event of a typical fire, the door provides robust protection for valuable assets, allowing customers to purchase with complete peace of mind.

Typically, during the customization process, a mechanical combination lock with keys is selected as the standard security lock for stainless-steel vault doors. This locking mechanism features three key-operated combination locks; the door can be opened only when any two of the locks are simultaneously engaged. In other words, if three individuals each hold a key, the vault door can be opened as long as two of them are present, which greatly facilitates daily operations. The dimensions and design of stainless-steel vault doors can be customized or specially engineered to meet specific customer requirements, offering high flexibility to accommodate diverse vault needs and providing greater convenience for more consumers.

The foregoing outlines several key points about vault doors. We encourage everyone to study and thoroughly understand this information so you can select products and equipment that best meet your needs and maximize your benefits. For more detailed information, please contact us—we are confident we can provide you with a satisfactory response.