Differences of Hollow Brick and Hollow Block

· 1 Subject Matter and Scope. This standard specifies the sintered hollow bricks and assembles a choice of product classifications, technical requirements, test methods, inspection rules, product certification, stacking and transportation. This standard applies to the clay, shale, coal as the main raw material. Mainly formed by roasting of non- load-bearing parts of hollow bricks and blocks (hereinafter referred to as bricks and blocks) .Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:diesel engine concrete mixer,diesel concrete mixers for sale,etc. We will provide you with the best product and service.   2 Products 2.1 Specifications 2. l. A brick and block for the rectangular hexahedral shape, the joints with sand award should have increased binding capacity over the depth of 1mm concave groove , as shown. 2.1.2 Brick and block length, width, height shall meet the following requirements: a. 290, 190, 140, 90 mm; b. 240, 180 (175), l15mm. Note: Other standard sizes by the supply and demand sides through consultation. 2.1.3 Brick and block wall thickness should be larger than 10mm, rib thickness should be greater than 7mm. 2.2 Article rectangular hole or other shape , once the plane parallel to the Omro and articles . 2.3.1 Classification 2.3 grade classification according to the density of 800, 900, 1100 the three density levels. 2.3.2 Classification of each block of the tag by product name, standard size , density level , product level and the preparation of the national standard code sequence . 2.4 The products brick and block the tag marked by product name. Size, density level concrete mixer, product level and the preparation of the national standard code sequence. Example 1 : size portable cement mixer, 290mm × 190mm × 90mm density 800 , superior product hollow brick , the tags...