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To ensure long-term structural stability, durability, and performance of cleanroom panels, our company has established a rigorous raw material selection and quality assurance system at the very beginning of production. From facing materials and core materials to auxiliary components, all selections follow the principles of performance priority, environmental suitability, and long-term reliability.
1. Selection of Color-Coated Steel Sheets:
The brand and thickness of color-coated steel sheets are critical factors determining the overall quality grade of cleanroom panels. Based on the investment positioning of the project, application environment, and functional requirements, we optimize material selection to provide customers with cost-effective and performance-balanced solutions.
Our long-term cooperative color-coated steel sheet brands include:
Baosteel, Yangtze River Steel, Tongxin Steel, Huada Steel, and Liqiang Steel, among others.
All color-coated steel sheets are manufactured from SGCC hot-dip galvanized steel coils supplied by reputable steel mills. The main mechanical performance indicators are as follows:
Yield strength ≤ 200 MPa
Tensile strength ≥ 300 MPa
Different steel mills exhibit varying characteristics in coating structure, substrate ductility, corrosion resistance, and weather durability. These differences directly affect product performance and pricing. Detailed comparisons can be found in the Performance Characteristics Table of Color-Coated Steel Sheets.
2. Selection of Core Materials:
As the core filling material of cleanroom panels, core materials generally provide fire resistance, sound insulation, and thermal insulation. However, different materials offer distinct advantages and are suitable for different application environments.
Common core material types include:
Rock Wool, Magnesium Oxide (MgO), Hollow Magnesium Oxide, Silica Rock,EPS, PU etc.
Each core material differs in density, fire rating, moisture absorption, and structural stability (see Core Material Types and Characteristics Table), resulting in varying performance levels and costs.
Core material selection is optimized according to the project’s geographical location, climate conditions, and usage requirements. Blind pursuit of low-cost or inappropriate alternatives is strongly discouraged. For example:
EPS core materials offer poor fire resistance and are generally prohibited by domestic fire protection regulations.
Magnesium oxide core materials contain high moisture content; under long-term dry climates, moisture evaporation may cause surface wrinkling, making them unsuitable for northern or arid regions.
3. Selection of Structural Frame Materials
The Structural Frame is a key structural component of handmade cleanroom panels. Its material grade and thickness directly determine the panel’s mechanical strength and overall quality.
We use branded steel materials from major manufacturers, selecting steel coils with a thickness of 0.7–0.8 mm, material grade DX51D / DX53D, and galvanized coating weight of 60–80 g/m². All Structural Frame components are cold-formed and precisely cut to length using computerized equipment according to design requirements.
After inspection and approval, the keels are laminated with the selected core materials.
For edge and corner finishing, galvanized bent steel parts are preferred, followed by ABS materials. PP materials and customized processing options are also available based on customer requirements. Strict quality control ensures a consistently high product qualification rate.
4. Selection of Composite Adhesive:
Composite adhesive plays a vital role in determining the bonding strength and long-term stability of cleanroom panels. Adhesive formulation and mixing ratios directly affect adhesion performance between the core material and the color-coated steel sheets, especially under varying temperature and humidity conditions.
Our standard adhesive system adopts a two-component polyurethane formulation, with a mixing ratio of:
Black adhesive : White adhesive = 1 : 4
This formulation provides strong adhesion, fast curing speed, and excellent environmental adaptability, ensuring reliable lamination quality.
5. Selection of Protective Films
Protective films are applied to safeguard the surface of color-coated steel sheets during transportation, handling, and installation. Two main types are available: flat film and vacuum film, each offered in branded or transparent options.
The industry-standard thicknesses are 4 mil and 5 mil.
Our standard packaging uses 5 mil protective film to provide enhanced surface protection. For machine-made panels without logos or branding, 4 mil protective film can be used upon request to balance protection and cost efficiency.
