Refractories (Refractory material) are packaged in refractories (Refractory material) brick factory acceptance of qualified products must be stamped brick chapter qualified models custom shaped refractory bricks in its work surface and sub-type stacking, typing packaging. Brick shape should meet the requirements of quality brick shape quality should meet the following requirements: (1) size tolerance: height tolerance of soil 2%; wedge face and head width tolerance bulk soil 2mm; the difference between the size of the first soil tolerance 1mm; Length Tolerance ± 1% customizable shaped refractory bricks, but the biggest difference is the soil 2mm. (2) edge damage. Allow hot or cold surfaces damaged two sides reached 40mm long and 5mm deep; but not exceed. (3) Loss angle. Hot and cold surfaces are only allowed to have one custom-shaped refractory brick corner damage, loss angle at three edges and corners of damage does not exceed the length of 50mm. Does not exceed the loss angle of 20mm. (4) Crack. Tile allows fine hairline cracks; not allow cracks parallel to the bearing surface; no longer than 40mm, no wider than the other crack 0.2mm is allowed. (5) pits, melting tracks and drum kits. Allow pits and a maximum diameter of melting traces of 10mm, the maximum depth of 10mm; bulge maximum 0.5mm. There are a number of bricks of various edges of the brick shall not exceed 70% of the total. Custom shaped firebrick | custom shaped firebrick | shangzhuang Refractories Refractories by shangzhuang. This information consists of: Zhengzhou shangzhuang Refractories Co. (www.yntjj.com.cn) provide, we are Commercial Union membership, the integrity of the whole network of certified suppliers. Feel free to contact us, contact: Cheng Haitao