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Copper pipe quality identification

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Update time : 2023-04-18 11:28:41

Air conditioning copper pipe refers to copper after inhibition or welding heat treatment of copper material. Because of its strong wear resistance, it is often used in electrical equipment, industrial production and construction industry. Air conditioning copper pipes can be manufactured according to extrusion forming method, continuous rolling method and up-drawing method. Air conditioning copper pipe is the key raw material for the production and processing of refrigeration equipment. It has two main uses:

Making heat exchanger;

Make connecting pipes and pipes.

First, the classification of air conditioning copper pipe

1. Copper pipe can probably be divided into general copper pipe and deoiled copper pipe:

General central air conditioning: thickness is generally 2 minutes, 5 minutes tube 0.5 mm thick, four minutes 0.6 mm thick, five and six minutes 0.7mm thick.

Deoiled copper pipe: also known as "oil removal copper pipe", there are 2 points, 5 minutes tube is 0.8mm thick, four points, five points, six points is 1.0Mm thick.

2. Actual classification of copper pipe raw materials:

Oxygen free copper: contains high purity oxygen free copper and phosphorus deoxidized copper, the characteristics of oxygen content is very little, in the deammoniating copper still a small amount of residual oxygen agent;

Aerobic copper: the key is general copper and tough copper, the characteristics are higher oxygen content;

Special copper: arsenic copper, silver copper, tellurium copper, etc., the characteristics of each added a different amount of aluminum alloy elements, in order to improve the comprehensive energy of raw materials.

Two, the identification of copper pipe quality

1. Generally in the purchase must look at the appearance of the air conditioning copper pipe to distinguish, the first is to see the color of the air conditioning copper pipe, according to the types of air conditioning copper pipe to buy different color resolution, such as copper pipe, the general tone of red copper is good copper, fake copper inside there is residue.

2. Generally good air conditioning copper pipe is made of all copper production and processing, there will be stronger ductility, so high-quality air conditioning copper pipe will have a deep line. After the inner surface of the air conditioning copper pipe is opened, if it is the same as the surface, then the overall quality of the air conditioning copper pipe is relatively high. But if the tone or other layers are different, it's likely that some of them have chemicals like iron in them. But better air conditioning copper pipe used in military industrial production and special industries are more.
3. The general production and processing of air conditioning copper pipe, the key is divided into hard state, semi-hard state, soft state three, not the same shape flexibility is different, generally can be defined according to the
bending of air conditioning copper pipe, high-quality air conditioning copper pipe is very easy to bend, but if it is difficult to bend or bend after the occurrence of cracks, It indicates that the quality of the air conditioner copper pipes is not good.

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