Length deviation high quality ceramic tiles are generally within 0.3mm;
Width deviation high quality ceramic tiles are generally within 0.2mm;
Thickness deviation high quality ceramic tiles are generally within 0.3mm;
Straightness high quality ceramic tiles are generally at 0mm;
High-quality ceramic tiles with chamfering conditions are generally less than 0.3mm on all four sides;
Bending curvature deviation high quality ceramic tiles are generally within 0.4mm;
Diagonal deviation high quality tiles are generally within 0.5;
Water absorption rate high quality ceramic tiles are generally within 15.5% (ceramic brick), within 0.1% (porcelain brick);
Thermal shock resistance (180 degrees) high quality ceramic tiles generally 10 times without cracking;
High-quality glaze-resistant ceramic tiles are generally cracked 8 times or more;
Glossy high quality ceramic tiles are generally above 80 degrees;
High-quality ceramic tile with polished effect, the glaze is bright and standing, crystal clear;
Printed with high quality ceramic tiles, natural texture and rich color and stability.
Chemical properties
1. Chemical resistance: including low concentration acid and alkali resistance, high concentration of acid and alkali, family chemical resistance and swimming pool salt.
2. Dissolution of lead and cadmium: (omitted).
Radioactivity and 3c certification
The national standard gb6566-2001 "Limits of radionuclides for building materials" stipulates the limits and test methods for natural radionuclides in building materials: radium-226, strontium-232, potassium-40, radioactivity specific activity.
Since August 1, 2005, China has begun mandatory radioactivity testing of porcelain tiles with a water absorption rate of ≤0.5%. Tile manufacturers must pass this certification to allow product sales, the so-called 3c mandatory certification. Glazed tiles and square tiles are not covered by the “3c†certification because they have a water absorption rate of more than 0.5%.
The specific radioactive nuclide of radium-226, é’-232, and potassium-40 in the decoration materials meets the requirements of ira ≤ 1.0 (internal irradiation index) and ir ≤ 1.3 (external irradiation index), which is a type of decoration material. Its production, sales and use range is not limited.
Surface Treatment Process,Aluminium Surface Treatments,Metal Treatment,Metal Surface Treatment
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