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A1 Non-Combustible · Fire Protection · High Strength · Dimensionally Stable
MgO Board for Fire Proof Door Core is a non-combustible magnesium oxide board specially suitable for use as a core or structural component in fire-rated door systems. With excellent fire resistance, high strength and dimensional stability, MgO board helps provide reliable fire protection and structural support for fire door manufacturing.
The board can be used in combination with steel skins, mineral wool or other approved fire-resistant materials to manufacture fire-rated doors for residential, commercial, industrial and public buildings.
| Fire Safety | Non-combustible MgO material helps reduce the contribution of the door core to fire development. |
| Structural Support | High-strength board provides a stable internal component for fire-rated door assemblies. |
| Easy Processing | Can be cut and machined according to different door dimensions and construction requirements. |
| Material Safety | Mineral-based material without formaldehyde or asbestos. |
| Customizable | Available in different thicknesses, sizes and densities for different door systems. |
MgO board can be incorporated into a multi-layer fire door assembly together with steel sheets, mineral wool, fire-resistant adhesives and other approved components. The exact door construction should be designed according to the required fire rating, door size, hardware and applicable testing standards.
Typical Multi-Layer Fire Door Structure
Steel Skin → Fire-Resistant Core → MgO Board → Fire-Resistant Core → Steel Skin
*Actual door construction may vary according to project requirements and fire testing specifications.
| Product Name | MgO Board for Fire Proof Door Core |
| Material | Magnesium Oxide (MgO), reinforcing materials and mineral fillers |
| Length | 2440 mm or customized |
| Width | 1220 mm or customized |
| Thickness | Customized according to door construction requirements |
| Density | Approx. 750 – 1200 kg/m³ |
| Edge | Square edge / Customized |
| Combustibility | Non-combustible |
| Fire Classification | A1, according to applicable test standards |
| Flexural Strength | ≥ 6 MPa |
| Dry Shrinkage | ≤ 0.3% |
| Wet Expansion | ≤ 0.3% |
| Formaldehyde | Formaldehyde-free |
| Asbestos | Asbestos-free |
| Processing | Cutting, drilling and machining available |
| Customization | OEM / ODM available |
Important Note:
The final fire-resistance rating of a fire door depends on the complete door assembly, including the door leaf construction, core materials, steel skin, frame, hardware, seals and installation method. The MgO board itself is a non-combustible component and should be evaluated as part of the complete fire door system.
Our MgO boards are manufactured under controlled production processes and can be supplied according to different project specifications and applicable international standards.
Available technical documentation and test reports can be provided according to customer requirements. For fire door projects, we can also discuss board thickness, density and construction requirements based on the target door design.
Different fire door manufacturers may require different board thicknesses, densities and dimensions. We provide customized MgO board solutions according to door size, core structure, processing requirements and project specifications.
Founded in 1993, Shandong Oushibao New Material Co., Ltd. is a professional manufacturer of magnesium oxide boards and related building panel products in China.
With more than 30 years of manufacturing experience, we specialize in MgO boards for construction, fire protection, flooring, wall systems, door cores and other industrial applications.
Our products are available in different thicknesses, sizes, densities and formulations to meet various project requirements. We focus on stable quality, customized production and reliable supply for international customers.
Q1: Can MgO board be used as a fire door core?
A: Yes. MgO board is a non-combustible mineral-based material and can be used as a core or structural component in fire-rated door assemblies. The final fire rating depends on the complete door construction and testing.
Q2: Can the MgO board be used together with steel door skins?
A: Yes. MgO board can be incorporated into steel fire door constructions together with other approved fire-resistant core materials and components.
Q3: Can you provide different thicknesses for fire door applications?
A: Yes. We can provide customized thicknesses, dimensions and densities according to the customer's door construction and production requirements.
Q4: Can you cut the boards according to our door size?
A: Yes. Customized cutting and processing can be discussed for bulk orders and OEM projects.
Q5: Can you provide samples?
A: Yes. Samples can be provided for product evaluation and testing. Please contact us with your required size and thickness.
Q6: Do you provide OEM service?
A: Yes. OEM and customized production services are available for fire door manufacturers and building material distributors.
Q7: What information should we provide for a fire door core quotation?
A: Please provide the required board thickness, size, density, door dimensions, estimated quantity and target fire-rating requirement. Our technical team can recommend a suitable board specification.
Tell us your required thickness, size, density and estimated quantity.
Contact OUSHIBAO for a customized MgO board solution for your fire door project.
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Main Product:
Mgo Board,
Magnesium Oxide Board ,
Fireproof Board,
Magnesium Chloride Board,
Magnesium Sulphate Board,
Mgo Fireproof Board
