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Inspection standard for Ceramics furniture

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ceramics are classified by use purpose 

1. Daily ceramics: such as tableware, tea sets, jars, jars, jars, POTS, jars, dishes, dishes, dishes, bowls, etc. 

2. Art (craft) ceramics: such as vases, sculptures, garden ceramics, utensils, picture frames, murals, furnishings, etc. 

3. Industrial ceramics: refers to the ceramic products used in various industries. It is also divided into the following 6 aspects: ① building a sanitary ceramics: such as brick, drainage pipe, face brick, exterior wall brick, sanitary ware, etc.; ② Chemical (chemical) ceramics: acid resistant containers, pipes, towers, pumps, valves, and acid resistant bricks, ash; ③ electric porcelain: an insulator used on the high and low voltage transmission lines in the power industry. Motor casing, pillar insulators, low-voltage electrical appliances and lighting insulators, and telecommunications insulators, radio insulators; ④ special ceramics: special ceramic products used in various modern industry and cutting-edge science and technology, including high aluminum oxide porcelain, magnesium stone porcelain, magnesium stone titanium stone porcelain, zircon porcelain, lithium porcelain, magnetic porcelain, metal ceramics and so on, etc. According to the material, coarse pottery (brickware or terra-cotta), fine pottery (potttery), stoneware (stone Ware), semi-porcelain (semivitreous china), and even porcelain (130relain), the raw materials are from coarse to fine, the billet body is from coarse loose and porous, gradually reaching dense, sintering, and the firing temperature is gradually from low to high.

         Ceramic type inspection standard: packing requirement: (1) The carton and packaging are clean and tidy, with good safety, and the packaging strength meets the requirements of sea, land and air transpoRTAtion; (2) The contents of outer box mark and small box mark are clear and accurate, and meet the packaging requirements; (3) The product box label and product labels are clean and clear, with accurate content; (4) The shipping mark and label are consistent with the physical object, the quantity is accurate, and can not be mixed; (5) LOGO is clearly visible and morphological specification. Visual quality inspection standards: (1) Exquisite porcelain quality, moist glaze surface and good semi-transparency; (2) The product should be stable on the plane, and the cover of the covered product should be consistent with the mouth; (3) The lid shall not fall off when the pot is tilted to 70°. When the pot lid is moved in one direction, the distance between the edge and the pot shall not exceed 3mm and the mouth of the spout shall not be less than 3mm; (4) The glaze color and picture color of the complete set of products shall be basically the same, and the specifications and sizes of the same product shall be commensurate; (5) each product shall not exceed four defects, and shall not be dense; (6) There is no glaze cracking problem on the surface of the product, and the process of glaze cracking effect is not included. Test and quality inspection standards: (1) The content of tricalcium phosphate in the product vegetarian fetus shall not be less than 30%; (2) The water absorption rate shall not exceed 3%; (3) Thermal stability: 140℃ into 20℃ of water heat exchange once uninterrupted; (4) The dissolution amount of lead and cadmium in any single product and food contact surface shall comply with the provisions of GB12651; (5) Diameter error: if the diameter is greater than or equal to 60mm, the allowable error is 1.5%~ -1.0%, and the allowable error is less than 60mm is plus or minus 2.0%; (6) Weight error: type I products for 3%, and type products for 5%. 
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