Classification by Core Material
- Rock Wool Sandwich Panels
Characteristics: Class A fire rating; thermal conductivity ≤ 0.043 W/(m·K); excellent sound and heat insulation.
Applications: Industrial plants and cleanrooms with strict fire safety requirements.
- Polyurethane (PU/PUR) Sandwich Panels
Characteristics: Thermal conductivity as low as 0.027 W/(m·K); superior thermal insulation; typically Class B1 fire rating.
Applications: Low-temperature cold storage and building envelopes requiring high-performance thermal insulation.
- Polystyrene (EPS/XPS) Foam Sandwich Panels
Characteristics: Low cost and lightweight; core material is flammable.
Applications: Standard temporary structures; use in densely populated areas is currently restricted by relevant regulations.
- Sandwich Panels with Other Specialty Cores
Includes phenolic, glass-magnesium, magnesium oxysulfate, and silicon-rock sandwich panels; these offer specific properties such as fire resistance, moisture resistance, and corrosion resistance, making them suitable for cleanrooms and specialized industrial environments.
Classification by Facing Material
Metal Facings: Galvanized steel, color-coated steel, Al-Zn coated color steel, aluminum alloy, stainless steel, etc.
Non-metal Facings: Plywood, fiberboard, plastic sheet, etc.; suitable for specialized applications requiring corrosion or impact resistance.
