Ceramic tile to master

Ceramic tile is divided into five grades, classy article, first-rate product, second-class article, thirds and cull the difference, because of the price difference is bigger, need to more carefully. When the choose and buy, should pay attention to ceramic tile and packing logo, color and specifications are consistent, product quality inspection certificate, logo and label is clear. Size error is greater than zero. 5 mm, flatness is greater than zero. 1 mm products, injustices will increase the difficulty of the construction, at the same time, after decorating effect is poor. Size is in accordance with the standards can be judged by visual. Place tile on flat surface, while the fourth is perfectly match with smooth surface, at the same time, to see if the four angles of ceramic tile are right Angle. Ceramic tile should have no defects such as concave and convex, bulging, newborn, side length error is less than 0. 2 - - - 0. 3 mm, the thickness of the error is less than 0. 1 mm. （ Detailed data should use vernier caliper to proofread) Ceramic tile good hardness, toughness, non-friable rotten is optimal. Use ceramic tile pieces scratch each other edges and corners, check the broken fragments breakup is close or loose, is hard, brittle or softer, is leave scratches, the powder scattered or if the former is the top grade, the latter is of poor quality. Good ceramic tile printing technology has good decorative pattern, design, colour and lustre is consistent, clear craft exquisite and delicate, no obvious leak color, dislocation, bolt or depth inconsistent phenomenon. Ceramic tile colour and lustre is uniform, better surface finish and flatness, around the rules, the design is complete, extract SiWuPian view from a case of presence of off color, defects such as deformation, lack of Angle and edge. Water droplets can be on the back of ceramic tile, see water out after the infiltration speed, in general, the slower suction, show that the density of ceramic tile is larger; On the contrary, the faster the water absorption, density is sparse, its are immanent quality based on the former. Don't usually cheap ceramic tile, ceramic tile can spread some uneven spots, particularly is deep color contrast, colour and lustre is spread unevenly, this is the ceramic tile to remove impurities and iron without clean removal.
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