Technical Adaptation Parameters for Applicable Environments
Compared to traditional fire doors, stainless steel fire doors demonstrate significant advantages in fire-resistant construction, anti-corrosion protection, and compliance certification. Through structural optimization, they overcome the耐火短板 caused by stainless steel's high thermal conductivity while fully leveraging its material properties such as weatherproofing, rust resistance, and excellent decorative effects, ensuring long-term stable fire performance. They exhibit strong adaptability to highly corrosive environments such as underground, coastal, and chemical industries, eliminating common issues like rust damage and fire compartmentation failure within 2-3 years of use with ordinary steel doors. With high modularity, the product can be customized into single-leaf, double-leaf, double-leaf with sidelight, and designs with observation windows according to project requirements, catering to various building types. It provides a specialized fire compartmentation solution for corrosive environments, featuring standardization, easy installation, complete documentation, and one-time fire inspection approval.
Technical Adaptation Parameters for Applicable Environments
1.Outer face sheet: 0.8 mm 304 stainless steel (upgraded to 1.0 mm 316L for coastal high-corrosion environments), brushed/mirror passivated finish, no rust after 96-hour neutral salt spray test.
2.Internal load-bearing frame: 1.2 mm hot-dip galvanized cold-rolled steel plate, which blocks direct heat conduction of stainless steel and avoids galvanic corrosion.
3.Composite door frame structure: galvanized steel frame wrapped with stainless steel integrated stepped labyrinth rebate, full penetration welding process, with weld seams sealed by pickling and passivation treatment.
4.Composite door leaf structure: double-layer inner and outer stainless steel face sheets + 5 mm heat insulation cavity + grid-shaped galvanized reinforcing ribs.
Application Advantages & Scenario Adaptation of Systematic Fireproof Design
1.Stable & Compliant Fire Resistance Performance The door adopts layered thermal insulation profiles combined with a three-stage full-range sealing system to specifically compensate for stainless steel's inherent high thermal conductivity. Class A1.5 insulated doors achieve a fire resistance time of no less than 90 minutes. The temperature rise on the unexposed side is strictly kept within national standard limits, and all products fully pass the type fire resistance test.
2.Dual Protection Against Corrosion for Long Service Life The door surface is fully covered by stainless steel sheets with passivation sealing treatment. No rust appears after a 96-hour neutral salt spray test. It is suitable for highly corrosive environments including coastal areas, underground parking lots, sewage treatment plants and chemical workshops, completely solving the common industry issue that ordinary steel doors will corrode through and lose fire resistance within 2–3 years.
3.Full-process Compliance to Ensure Smooth Fire Acceptance Complete qualification documents are supplied, covering raw material testing, processing technology, sealing components and finished product full inspection. All model parameters can be verified officially, preventing point deductions and on-site rectification during fire acceptance caused by missing material reports, unqualified sealing structures or incomplete certifications.
4.Modular Customization System for Various Requirements Modular profiles support customized styles such as single-leaf doors, double-leaf doors, unequal-width double doors, doors with transom windows and fire sight glass doors. Compatible with Class A, B and C fire resistance ratings, the products balance architectural appearance and mandatory fire safety codes.
