First, the classification and characteristics of copper pipe materials
Copper pipe materials commonly used in freezers are mainly divided into oxygen-free copper pipe, C12200 copper pipe, C10200 copper pipe and low-temperature tinned copper pipe. The following will introduce the characteristics of these copper pipe materials.
1. Oxygen-free copper tube
Oxygen-free copper tube is a very high purity copper pipe material, copper content of 99.99% or more, with good thermal conductivity and welding performance. In addition, oxygen-free copper tube has good electrical conductivity and is not easy to be corroded, which is widely used for refrigerant piping in freezer refrigeration system.
2. C12200 copper tube
C12200 copper tube, also known as DHP copper tube, contains more than 99.9% copper, has high tensile strength and thermal conductivity, corrosion resistance is also good, usually used for freezer upper and lower terminals of the connecting pipe.
3. C10200 copper tube
C10200 copper tube, also known as OFHC copper tube, contains more than 99.95% copper, has good cold working performance and thermal conductivity, widely used in semiconductor manufacturing and aerospace field.
4. Low Temperature Tinned Copper Tubes
Low-temperature tinned copper tube is a kind of copper tube with a layer of tin on the surface, which can improve the corrosion resistance and weldability of the pipeline, and is widely used in the production of condenser and evaporator in the freezer system.
Second, the common types of pipes in the cold storage
The common piping types in freezer are refrigerant piping, inlet and outlet water piping, cable piping and so on.
1. Refrigerant piping
Refrigerant pipe is an important part of the refrigeration system, generally use oxygen-free copper pipe or tinned copper pipe for production, common pipe diameter of 6mm, 8mm, 10mm, etc..
2. Inlet and outlet water pipes
Inlet and outlet water pipes are mainly used for water cooling and cooling water recycling, usually made of C12200 or C10200 copper pipes, with common diameters of 15mm, 22mm and 28mm.
3. Cable ducts
Cable ducts are mainly used to energize and interconnect the cables of various equipment, often made of C10200 copper pipe, with common diameters of 10mm, 12mm, 15mm and so on.
In short, the freezer used in the piping materials and piping types are different, need to choose the appropriate copper pipe material and the corresponding piping production method according to its characteristics. In the process of repairing the freezer, suitable piping materials should be selected according to the actual needs to ensure its quality and reliability.
