Can Types and Basic Applications

Type	Can Features	Applications
Three-piece Can	Also known as a joint can or open can, it is composed of body, lid and bottom. The can body has seams. In terms of joint processes, three-piece cans can be divided into tin soldered cans, seam welded cans and bonded cans.	Packages for food, beverage, medicine, etc.
Two-piece Can	It is composed of two parts, a seamless can body with a bottom and a can cover. In terms of machining processes, two-piece cans can be divided into DRD cans and drawn and wall ironed (DWI) cans (otherwise known as drawn and ironed (DI) cans). In terms of can body height and cross-section diameter, DRD cans can be divided into drawn (DR) cans and drawn and redrawn (DRD) cans.	Packages for carbonated drinks, tuna and other food
Food Can	Generally used for making completely sealed cans for heating sterilization after contents are filled. Almost all the food cans in China are made of tinplates. However, in recent years, tin free steel and aluminum sheets are also in use and in growing demand. Most food cans are three-piece cans, while some are drawn two-piece cans.	Packages for milk powder, seafood, fruits and other food
General Can	General cans are metallic cans containing food such as snacks, seaweed and tea as well as pharmaceuticals and cosmetics. Such cans are sealed and do not need sterilization. Outer surfaces of general cans are normally beautifully printed, so they are also known as “artistic cans”.	Packages for biscuits, paints, and cosmetics
Spray Can	Spray cans are pressure resistant. Originally applied in areas such as medical healthcare and crop pest control, they have been in growing demand in fields such as cosmetics, detergents, pesticides, and paints in recent years. They also have a certain share in the food market.	Packages for pesticides, butter and other food
18-liter Can	18-litre cans are large containers for petroleum and edible oil. In Japan, they are commonly known as “one-bucket cans” (“one bucket” in Japan equals 18 liters).	Packages for industrial or edible oils and greases, and paints, and so on