Rivet molds are mainly used for riveting of non-metallic materials. The hollow rivets are light in weight and weak in the nail head, and are used for riveting of non-metallic materials with little load. Tubular rivets are used for riveting of non-metallic materials that do not follow the load. Sign rivets are mainly used for riveting the nameplate on the machine, equipment, etc. The blind rivet is a type of rivet for single-sided riveting, but it must be riveted with a special tool, a rivet gun (manual, electric, and moving). These rivets are especially suitable for riveting applications where ordinary rivets (which must be riveted from both sides) are inconvenient, so they are widely used in construction, automobiles, ships, airplanes, machinery, electrical appliances, furniture and other products. Among them, open-type flat-head blind rivets are the most widely used, and the countersunk core rivets are suitable for the performance of riveting applications requiring smooth rivets. Closed blind rivets are suitable for riveting applications requiring higher loads and certain sealing performance. The core rivet is another type of single-faced rivet mold. When riveting, hammering the rivet head with a hammer to expose the nail core so that it is flush with the end surface of the nail head, which is convenient for riveting operation, especially suitable for inconvenient use. Common riveting (should be riveted from both sides) or riveting of blind rivets (lack of rivet guns). Flat-headed core rivets are usually used, and countersunk core rivets are suitable for applications where the surface requires smooth riveting.