Basic Characteristics
Material Composition: Mainly made of cold-rolled steel plates or galvanized steel plates. The thickness of the door frame and door leaf panel is usually between 0.8mm and 1.5mm, and reinforcements can exceed 3.0mm.
Structural Features
Mostly double-layer steel composite structures, with internal fillings such as honeycomb paper, rock wool, perlite, or aluminum honeycomb, balancing lightweight with sound insulation, heat insulation, and fire resistance.
The surface often uses electrostatic spraying, powder coating, or transfer printing and baking finish processes to enhance corrosion resistance and aesthetic appeal.
Functional Advantages
High Impact Resistance: Resistant to deformation, suitable for places with high foot traffic or prone to collisions (such as hospitals and schools).
Corrosion and Rust Resistance: Especially suitable for humid places or areas requiring frequent disinfection (such as hospital restrooms and laboratories).
Easy to Clean and Maintain: Smooth and flat surface, can be wiped with neutral detergent, suitable for spaces with high hygiene requirements.
Safety and Certification
Ordinary steel doors do not compulsorily follow national anti-theft standards. If anti-theft functionality is needed, a security door with the "FAM" certification mark should be chosen.
Fireproof steel doors must pass 3C certification and the certification from the Ministry of Public Security Fire Products Conformity Assessment Center. Fire resistance levels are classified as Class A (≥1.5h), Class B (≥1.0h), and Class C (≥0.5h).