Wood grain is a typical surface treatment that applying wood designs painting in aluminium profiles. Wood grain would improve the stereo perception, favorable appearances, texture outlook, and physical performances such as hardness, weather resistance, corrosion resistance and durability. It is a suitable replacement material of wood, in keeping with the aspiration of environmentally friendly.

Wood grain surface treatment is similar to other surface treatment process. First of all, casting is the beginning step. Aluminium ingot will be melted and manufactured into suitable size aluminium bar. In the meantime, all the metal elements will be set at specific ratio in order to reach quality standard and hardness. Once aluminium bars are ready, they will be transferred to extrusion plants. Different size aluminium bars match different magnitude extrusion machines. Then, aluminium bars will be extruded through a designed mould to aluminium profiles with a setting length. Aluminum profiles need to be straightened and then heat treatment to reach a different level of hardness. This heat treatment process is also called precipitating hardening. Before surface treatment, aluminum profiles will go through pretreatment process which is a cleaning process that displaces aluminium profiles in chemical liquids. These chemical liquids may wash off dirt and oil on profiles surface. This process also enhances the adhesion of surface treatment materials. In the end, all aluminum profiles will be transferred to wood grain assembly line. Following the order request, specific wood texture will be printed on the surface.

Application
 
Aluminium windows and doors, curtail wall, sliding doors, indoor decoration, gardening, road, public constructions, and furniture, aluminium profiles can be modified into different products, such as flower box, fences for balcony, garden, riverside, pavement, antique windows, mini pavilion, handrails, furniture, firedoor, archives cabinet, metal accessories.