The selection of ceramic sanitary ware should have different requirements for the visible surface and the non-visible surface: The visible surface refers to the surface that is easy to see after the porcelain is installed, and the quality of the visible surface should be strictly controlled, especially when the water is splashed when used. The quality of the parts is more important, and the quality of the invisible surfaces after installation should not be too picky.
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Three judgments of appearance quality
(1) Whether there is cracking: tapping the edge of the porcelain piece with a thin rod to listen to the sound is crisp, when there is a 'husky' sound, it proves that the porcelain pieces have cracks.
(2) Deformation size: Put the porcelain pieces on a flat platform, check whether the movement is smooth and even in all directions, whether the installation surface and the edge of the porcelain surface are flat and whether the installation holes are even and smooth.
(3) Glaze quality: The glaze must be smooth and smooth, and the glaze should be uniform. Visible surface, especially the quality of glazed water splashing is especially important. Drop a few drops of colored liquid on the glaze with a cloth to wipe it evenly. After a few seconds, use a damp cloth to dry it. Check the glaze and no dirty spots are better.
Porcelain pieces also have water absorption, toilets have drainage, water consumption, noise, water seal function and other performance requirements, these performance consumers are generally difficult to check and judge, should try to buy products with quality credit guarantee, check the product The recent effective quality inspection reports covered by the CMA chapter have been certified by the relevant national authorities. ,,
How to avoid decoration contract trap
The silicon tube is a kind of new composite pipe with silica gel solid lubricant.The main raw materials are high-density polyethylene and the core layer is the lowest friction coefficient of the solid lubricant silica gel.Widely used in optical cable communication network system.
Performance characteristics of silicon - core tube
1. The silicon core layer of the inner wall is solid, permanent lubricant, the friction property of the inner wall of the silicon core remains unchanged, and the cable can be repeatedly drawn in the pipe;
2, its inner wall of the silicon core layer is pressed by synchronization in high density polyethylene pipe wall, and evenly distributed throughout the pipe wall, the wall of the silicon core layer and high density polyethylene with the same physical and mechanical properties, not peeling off, out of, and silicon tube with life;
3. The silicon core layer of the inner wall does not react with water, and the pipe can be flushed after the accident.
4. The radius of curvature of silicon tube is small (10 times of its outer diameter).When the tube is in the bend and the gap, it can be determined according to the environment, without any treatment, no need to make a transition;
5. The length of each (disk) silicon tube can be made to any length.In general, the standard length of each (disk) silicon tube is 2000 meters in terms of the convenience of transportation safety and construction.
6. The construction is convenient and the project cost is reduced.The silicone tube is not required to coat the tube, and it can be used directly in the pipe line, without the tube.Since the length of the silicon tube is generally 2,000 meters, the well can be set up every 1,000 meters, and it will only take 15 minutes for each 1000 meters.
Product appearance
High density polyethylene (HDPE) silicon inner and outer walls should be clean and smooth, not allowed to have bubbles, obvious scratches, dents, impurities, color inequity defects.Pipe ends shall be cut flat and perpendicular to the tube axis.The inner wall of silicon core should be tightly welded and no deform phenomenon.The outer wall of the pipe is clearly marked.
Application fields: outdoor communication cable and cable pipeline system, public information network, public transport system, cable network and highway communication engineering construction.
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ZHEJIANG BOYA COMTECH CO.,LTD , http://www.zjbytx.com