The cabin doors compliant with the GJB2805B-2021 standard possess multiple excellent performance characteristics. Below is a detailed introduction:

Material and Structure

• Steel Plate Thickness: The door frame is typically made of 10mm thick steel plate, while the door leaf is made of 4mm or 5mm thick steel plate. For example, a certain type of moisture-proof airtight door produced by CUSTIC uses 10mm and 5mm thick steel plates for the frame and leaf, respectively.

• Internal Structure: Some doors adopt a composite structure, such as 5mm + fireproof, explosion-proof, thermal insulation layer + 2mm steel. For instance, a moisture-proof door from the CUSTIC brand uses this structure to better meet requirements for thermal insulation and fire resistance.

• Surface Treatment: The door surface undergoes special treatments, such as the application of corrosion-resistant, acid-alkali-resistant coatings like epoxy zinc-rich paint for rust prevention. For example, CUSTIC's airtight doors are coated three times with epoxy zinc-rich paint to resist seawater and salt spray erosion.

Sealing and Protective Performance

• Sealing Performance: High-quality sealing strips and precise manufacturing processes ensure a tight fit between the door and frame when closed, effectively blocking external moisture, air, and dust. This achieves excellent air tightness and water tightness, with some doors meeting air tightness level 8, water tightness level 6, and wind pressure resistance level 9 requirements.

• Moisture Resistance: Metal doors offer excellent moisture resistance, effectively preventing water vapor from entering the cabin and protecting internal equipment and materials from dampness. For example, CUSTIC's metal moisture-proof airtight doors demonstrate significant waterproof and moisture-proof effects.

• Insect and Bird Prevention: Equipped with triple-layer airtight ventilation windows, sealed with rubber strips around the edges and an outer metal mesh. This ensures ventilation while effectively preventing insects and rodents from entering, such as CUSTIC's triple-layer insect and bird-proof airtight ventilation windows.

Safety and Reliability

• Strength: The door body is made of steel structure with sufficient strength to withstand external impacts and explosion shockwaves. For example, CUSTIC's protective airtight doors use main steel plates no less than 4mm thick, providing ample strength to endure various external forces.

• Lock Configuration: Various types of locks are available, including concealed beam locks, mechanical hidden locks, mechanical combination locks, padlocks, fingerprint and facial recognition locks, and electronic mechanical combination locks, meeting different security level requirements. For example, the multiple lock types mentioned by CUSTIC Special Doors are suitable for doors compliant with the GJB2805B-2021 standard.

• Explosion Resistance: Some doors, such as explosion-proof doors, can withstand certain levels of explosion shockwaves, protecting internal facilities and personnel. High-strength alloy materials are used in the door structure to enhance impact resistance.

Application Scenarios

• Military Applications: Primarily used in military facilities such as ordnance warehouses and naval vessels to ensure the safety and stability of military supplies. For example, the numerous moisture-proof airtight doors provided by CUSTIC for a naval base significantly improved equipment storage security.

• Civilian Applications: Also suitable for cabins, basements, cave warehouses, petrochemical industries, hazardous material storage, and other locations requiring high standards of waterproofing, moisture resistance, airtightness, and theft prevention. Examples include ship-style moisture-proof airtight doors and windows used in high-salt, humid environments like coastal areas and caves.

Technical Parameters

• Dimensions: Generally customized based on actual requirements. For example, a certain type of moisture-proof airtight door produced by CUSTIC measures approximately 3m×4m, but specific dimensions should follow the design drawings.

• Anti-Destruction Capability: Theft prevention level 1, with anti-destruction capability no less than 15 minutes. For example, the GJB2805B-2021 standard mentioned by CUSTIC Special Doors requires protective doors to meet this level of anti-destruction capability.

• Number of Locks: Single-leaf doors must have no fewer than 10 locks, while double-leaf doors must have no fewer than 15 locks, and all locks must operate simultaneously in one action.