Rivets can be mainly divided into hot forging rivets, cold forging rivets, hollow and semi hollow rivets.
Hot forging formed rivets: generally larger in size, mostly used for locomotives, ships, boilers, etc., usually requiring hot forging to form the head, see GB863-866;
Cold heading formed rivets: generally with a diameter specification of 16mm, the head is usually formed by cold heading, see GB867-870, GB109, etc.
Hollow and semi hollow rivets: Hollow rivets are used in areas with low shear force and are commonly used to connect non-metallic parts such as plastic, leather, wood, canvas, etc.