What are the categories of building materials

1.Lightweight and efficient
Weighing less than 24kg per square metre, it reduces structural loads, steel consumption and construction costs.
2.Rapid construction
The modular design supports plug-in installation and can be cut at will, increasing construction efficiency by more than 40%, especially for temporary buildings with tight schedules.
3.Multi-functional composite
Integrate the four functions of load-bearing, heat preservation, fireproofing and waterproofing, realising the integration of ‘structure-decoration-protection’ and reducing the need for secondary decoration.

Classification system of building materials

According to chemical composition and functional properties, building materials can be classified into the following three main categories:

Inorganic building materials

Metallic materials: e.g. steel, aluminium alloy (colour steel sheet substrate)

Non-metallic materials: concrete, glass, rock wool (sandwich panel core material)

Organic building materials

Natural materials: wood, bamboo

Synthetic materials: polyurethane, polystyrene (common core materials for sandwich panel )

Composite building materials

Metal and non-metal composite: e.g. colour steel sandwich panel (metal panel + insulation core material)

Characteristics and classification of colour steel plate

(i) Material composition and performance of  sandwich panel 

Colour steel plate is a composite material with galvanized steel plate and aluminium-zinc plated steel plate as the base material and organic coating on the surface.

Its characteristics include:

Lightweight and high strength: weighing only 10-14kg/m², the strength can replace traditional beam and column structures

Excellent weather resistance: the coating remains colourfast for 10-15 years, making it suitable for outdoor environments

Convenient processing: modular design increases construction efficiency by more than 40 per cent.

Classification and Application

By type of coating

Polyester coating: economical, used for temporary construction

Fluorocarbon coating: high corrosion resistance, suitable for coastal areas

According to core material structure

Single-layer colour steel plate: used for enclosure structure

Sandwich panels colour steel plate: containing polyurethane (PUR), rock wool and other core materials, both heat preservation and fireproof function

Features and advantages of sandwich panels

1.Lightweight and efficient

Weighing less than 24kg per square metre, it reduces structural loads, steel consumption and construction costs.

2.Rapid construction of  sandwich panel 

The modular design supports plug-in installation and can be cut at will, increasing construction efficiency by more than 40%, especially for temporary buildings with tight schedules.

3.Multi-functional composite

Integrate the four functions of load-bearing, heat preservation, fireproofing and waterproofing, realising the integration of ‘structure-decoration-protection’ and reducing the need for secondary decoration.

Functions and Uses

Thermal insulation: the thermal conductivity of polyurethane core material is only 0.041W/m-K, suitable for cold chain logistics centres

Fireproof and flame retardant: rock wool sandwich panel  have passed Class A fire certification and are used in hospitals, airports and other public buildings.

Rapid construction: prefabricated components are assembled on site to shorten the construction period (e.g., construction of large venues).

Typical application cases

Industrial plant: Colour steel sandwich panel  for roof and wall, to achieve ‘structure-insulation-decoration’ integration

Data centre: rock wool sandwich panel  for fire protection and noise reduction in the server room.

Assembled building materials: modular sandwich panel house, 200m2 building materials can be completed in 7 days.

Star Er is a technology-based construction enterprise committed to promoting scientific and technological innovation to lead future life. We have been specializing in steel construction for more than 10 years.

Our products cover all types of steel structure buildings, including various prefabricated metal building warehouse, Building material and Service of deepth design.