There are many types of plywood, plywood by tree species can be divided into softwood plywood and hardwood plywood; can be divided according to the use of ordinary plywood, structural plywood, cement plywood, fire plywood and special plywood. The company is located in:
Physical and mechanical properties of plywood available moisture content, density, thermal conductivity, bonding strength and so on. International Organization for Standardization of ordinary plywood production, from the structure, the finished product moisture content, quality 3 to make provisions: ① structure. Adjacent layers of veneer texture should be at right angles to each other; relative to the central layer symmetrical to each other, the same tree species, the same thickness; ② moisture content. In 12 ~ 14% (according to China's national standards, Ⅰ, Ⅱ class plywood, the average moisture content of not more than 13% on average; Ⅲ, Ⅳ plywood moisture content does not exceed 15%). ③ quality. Finished products should be rectangular straight edges and obvious edges and corners;
General plywood size: Plywood thickness of 2.7mm, 3.3mm, 4.5mm, 5.5mm, 6mm ... ... from 6mm, according to lmm increments. Thickness from 4mm thin plywood. 3mm, 3.5mm, 4mm thick plywood for the common specifications. Plywood of other thickness should be produced by agreement between both parties.