Coated abrasives compose of three elements: substrate, abrasive and bonder. According to the different substrates, abrasives and bonder, coated abrasives can be divided into many types, with different properties of different uses.The scientific and reasonable classification method of coated abrasives is an important basis for selecting coated abrasives.

(1) Classification according to substrates and methods of use: Coated abrasives are divided into dry grinding sand cloth, water-resistant sand cloth, dry grinding sandpaper, water-resistant sandpaper

(2) According to bonder and substrate treatment classification: Coated abrasives are divided into animal glue bonding coating abrasives, resin bonding coating abrasives, all-resin bonding coating abrasives, water-resistant coating abrasives four categories.

(3) According to abrasive material, particle size classification: Abrasive material indicates the type and performance of abrasive, abrasive granularity indicates the size and distribution state of grinding particles. Different abrasive materials and granularity, can be divided into different coating abrasive varieties.

In addition, dry abrasive cloth and water resistant sandpaper also has a code name, for different granularity, the current market is still used.

(4) According to the density of sand planting: the density of abrasive particles on the surface of coated abrasives is indicated.

The sand planting density of coated abrasives is divided into dense planting sand (C) L hydrophobic Sand (O) P.

(5) According to product shape classification: Coated abrasives according to product shape can be divided into: page, roll, ribbon, disc, special-shaped products.

Many of the above classification methods, we usually think that "according to the bonder and material treatment classification" more reasonable, and then combined with the "classification according to the shape of the product", basically can meet the description of the coated abrasive.

According to the classification of bonder and substrate treatment can be divided into animal glue bonding coating abrasives, resin bonding coating abrasives, all-resin bonding coating abrasives, water-resistant coating abrasives four categories.
Animal glue Bonding Coating Abrasives: code-named G/G bottom, compound glue are used animal glue, low-grade substrate treatment agent, heat resistance, moisture resistance is poor, but binder for water solubility, cheap, easy to make, easy to use.
Semi-resin bonding coating Abrasives: code-named Citrus C, substrate is animal glue, compound glue is synthetic resin binder, medium and file substrate treatment agent, the characteristics between animal glue and all-resin products.

Full resin bonding Coating abrasives: code-named R, bottom, compound adhesive are made of synthetic resin, high-grade substrate treatment agent (not water-resistant or with waterproof), high bonding strength, good wear resistance, heat resistance, mainly used in mechanical grinding. Water-resistant coating abrasives: code-named WP, substrates in advance to be water-resistant or oil-resistant treatment, bottom, compound adhesive using synthetic resin or paint, suitable for use in water quality coolant.