The national standard of ceramic wall and floor tiles specifies the definition, technical requirements,dry pressed ceramic tile test method, inspection rules and signs, instructions for use of products,packaging, transportation, storage and order. Porcelain tile implementation of gb/t4100? 2006 appendix g (water absorption rate of E ≤ 0.5%); pottery tile implementation of gb/t4100? 2006 appendix L (water absorption rate of E > 10%).

1, size deviation

Tile size (length, width) including length, edge straightness, angle and surface roughness. Size bias refers to the size of the allowable deviation of mean job size.

1. Length is the length and width dimensions index of ceramic tile.

The edge straightness is reflected in the brick surface, the edge of the central deviation deviation from a straight line.

③. Angle is four tile angle vertical extent (the brick of a corner to put a correction by standard plate at right angles, measuring it with standard right angle deviation).

4. Edge bending degree?? brick one side of the edge and the center deviation of straight line distance.

⑤. Surface roughness is composed of three points on the surface of the ceramic tile to measure.

A. center bending?? brick by brick center from 4 angles of the 3 angles of the decision plane distance.

B. warp?? brick three angles determine a plane, the distance of the fourth angular deviation of the plane.

2, the surface quality:

Quality: at least 95% bricks from 0.8 meters away from the observation of the surface defect freevertical.

Qualification: at least 95% bricks from a distant place vertical observation of surface defect free.

And for the purpose of decoration spots, spots not to be considered a fault.

(defects generally refers to: such as polished black spots, pinhole, yin and Yang, deficiency, chippingcolor flowers, chipping; glazed tile and dust, pinholes, craters etc.)

3, physical properties

1. Water absorption rate: it refers to the open pores of ceramic products full absorption of water,inhalation of water weight percentage of product weight. The national standard is bibulous rate ≤0.5% called porcelain tile, (average value is not more than 0.5%, a single value is less than 0.6%, water absorption rate, 10%) for pottery tile (brick ceramic water rate on average for E > 10%, a single value of not less than 9%, when the average value of E > 20%, the manufacturer shall indicate).

The strength of the:

A.: porcelain brick thickness ≥ 7.5mm, breaking strength, average of not less than 1300n

Ceramic tile: thickness ≥ 7.5mm, breaking strength, average of not less than 600N

Modulus of rupture of B. average of not less than 35MPa, a single value of not less than 32Mpa,modulus pottery tile fracture average of not less than 15MPa, a single value of not less than 12MPa

③. Thermal shock resistance: after 10 times of thermal shock test does not crack and crack

4. Glaze bifida glazed ceramic tiles: the glaze bifida glaze after the test, there should be no cracks orspalling.

The polished gloss. Gloss: not less than 55. (gloss is one of the reference index to measure, polishing brick sintering degree higher gloss, Sintering Densification is better)

⑥. Wear resistance: unglazed tiles deep abrasion resistance volume is not more than 175mm3

⑦. Small color: color after testing report of ceramic tile value. Color is divided into two kinds, one is the color of the single product itself, one is the color difference between single and single. The probabilityis very small, then a color more common. Generally speaking, a slight color difference is inevitable,especially the different time produced products, color is always prone to minor changes, this change,and raw material ratio measurement deviation, firing temperature, firing atmosphere fluctuations,even with the climate change has close. So the factory of products from the kiln to "color" sorting, to ensure that each batch of the same color or similar.

Physical properties: quality index and frost resistance, abrasion resistance, impact resistance, coefficient of linear thermal expansion, expansion, floor tile wet friction coefficient.

4, chemical properties

1. Chemical resistance: resistant to low concentration of acid and alkali, high concentrations of acid and alkali resistance, chemical reagent and family swimming pool.

The release of lead and cadmium: (omitted)

5, radioactive and 3C certification

The national standard GB6566-2001 "building materials radionuclides Limited", provides naturalradioactivity of building materials radionuclides in radium, thorium: -226 -232, -40 of potassium, the specific radioactivity of limits and test methods.

Since August 1, 2005, China began mandatory radioactive detection of porcelain tile water absorption rate ≤ 0.5%. Ceramic tile production enterprises must pass the certification to allow product sales, the so-called 3C compulsory certification. Glazed tiles, square brick due to water absorption rate is greater than 0.5%, I do not belong to the category of "3C" certification.

The radioactivity of decoration materials, natural radionuclide radium, thorium, potassium, -226 -232-40 and meet the IRA ≤ 1 (internal exposure index) and IR ≤ 1.3 (external exposure index)requirements for class a decoration materials, the scope of production and use is not restricted.

You want to know China market top ten ceramic brand? First you have to know the next tile kind, now I know have a glazed tiles, polished glazed tiles, microcrystalline stone tile, tile, polished tile, these types of tiles.

Glazed tiles, glazed porcelain similar feeling, will be processed glaze technology. At the same time also contains ceramic glazed tiles and porcelain glazed two. Clay is composed of clay, its water absorptionis higher than that of porcelain, but the strength will be relatively low.

At the same time, because of its luster glazed tiles will be different, will also appear to have tile glossyand matte type. I personally will be relatively like matte class of things, because there is a sense of fashion, will feel a little high-grade.

The brick is both positive and negative material and color are the same, just like a completely from all sides as like as two peas. But the biggest characteristic is wear-resistant, non slip, it is a kind of ceramic tile relatively prime. While the polishing brick is the surface is polished polished bright surface ofceramic tile. Characteristics like the brick has a hard wearing, but its surface will be more bright.

I heard, vitrified brick is a kind of evolution body polishing brick, its surface is smooth and does notneed polishing, the polishing brick not Naizang disadvantages.

However, I kinda like polishing brick name, feeling as if the bad feeling, so the next time you want tohave a look which is polished to ten brands.