The primary factor to consider when purchasing clay bricks is the specifications of the clay bricks. The specifications of clay bricks are divided into five types: standard type, general type, irregular type, special type, and super special type. Here is a detailed introduction from Zhengzhou Juda Refractory Materials Co., Ltd.:
① Standard clay bricks. The standard size of the clay brick is 230mm × 114mm × 65mm.
② Ordinary clay bricks. Any clay brick that has one of the following classification characteristics is considered a regular clay brick:
a. The mass is 2-8kg;
b. The thickness dimension is 55-75mm;
c. No more than 4 measuring scales;
d. The size ratio is not greater than 4;
e. Without concave angles, arcs, grooves, notches, holes, openings, and acute angles ≤ 75 °.
③ Irregular clay bricks. Any clay brick with one of the following classification characteristics is called an irregular clay brick:
a. The mass is 2-15kg;
b. The thickness dimension is 45-95mm;
c. The size ratio is not greater than 6;
d. The total number of arcs and concave corners shall not exceed 2;
e. The total number of ditches and sheds shall not exceed 4;
f. An acute angle greater than 50 ° and less than or equal to 75 °.
g. Without holes or openings.
④ Special type clay brick. One of the following classification characteristics is a common clay brick:
a. The mass is 1.5~30kg;
b. The thickness dimension is 35-135mm, and the length dimension of the tubular brick is not greater than 300mm;
c. The size ratio is not greater than 8;
d. The total number of arcs and concave corners shall not exceed 4;
e. The total number of ditches and sheds shall not exceed 8;
f. A sharp angle of 30 °~50 °.
g. No more than one hole or opening.
⑤ Any clay brick that exceeds the special characteristics is called a super special clay brick.
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