Explanation

A round wood segment with or without bark obtained from the production of raw wood. According to its purpose, it can be divided into direct use, processing use, and special grade. Direct use refers to the use of circular wood segments that remain in their original shape during use and are not processed, such as pit wood, pile wood, purlins, rafters, electrical columns, etc; Processed log refer to those that can be used only after further processing, and can be further subdivided into building materials, furniture materials, plywood materials, vehicle materials, textile materials, musical instrument materials, etc. according to their uses; Special grade refers to high-quality trees that can be used for high-end building decoration, decoration, and various special needs, such as commonly used tree species in China, such as Korean pine, water ash, walnut, camphor wood, nanmu, etc. As the main product of wood industry, log must comply with the national wood standard, which stipulates tree species, use, size and size grading, tolerance, wood defect limit, size inspection and material evaluation methods for each type.

Classification