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Steel file is a tool for surface processing of metal, wood and other materials, mainly used for removing irregular surface, trimming shape, grinding size and reshaping workpiece tools. According to different work needs and processing objects, steel files can be divided into a variety of different types, mainly including: flat file, half round file, square file, round file, triangle file, knife file, taper file, horse brand file, arch file and so on.

Flat file: Flat file is the most common kind of steel file, and its filing surface is a rectangular plane, which is suitable for flat processing of a large area, and can quickly remove the high point of the surface of the material to make the surface more flat.

Half round file: The file face of half round file is half round, which is suitable for the processing of curved surface and curve, and can better deal with corners and depressions.

Square file: square file face is square, suitable for edge and straight line processing, can be used to trim right angles and edges.

Round file: The face of the round file is round, which is suitable for the processing of round or curved shape, and can achieve better dressing effect.

Triangle file: The triangle file has a triangular file face, which is suitable for the processing of internal corners and narrow seams, and can more easily enter narrow Spaces.

Knife file: The file face of the knife file is the shape of the blade, which is suitable for fine cutting and dressing work, and can achieve more fine processing.

Taper file: The taper file face is tapered, which is suitable for the processing of taper holes and surfaces, and can better deal with workpieces of different diameters.

Horse file: Horse file is a special file for woodworking, file surface is mostly chamfered or beveled, suitable for wood processing, can quickly remove large wood chips.

Arch file: The arch file face is arched, suitable for curved and curved surface processing, and can better follow the curve for trimming.

In general, there are a variety of types of steel files, each type of file has its own unique design and application scenarios, and the appropriate type can be selected according to the specific processing needs. When selecting and using steel files, it is necessary to decide which type of steel file to use according to the material, shape and processing requirements of the workpiece to ensure the best processing results.