Reliable Copper Aluminum Connecting Pipes With High Tensile Strength

Reliable Copper-Aluminum Connecting Pipes with High Tensile Strength

Detailed explanation of technical standards for copper-aluminum connecting pipes:
1. Quality requirements for welding points:
The welding joints of copper and aluminum connecting pipes must be free of defects such as pores, cracks, slag, burrs and burns. The two metals, copper and aluminum, should be completely fused during the welding process, with no obvious oxide film. In addition, the reduction of the plug hole (Φ6.3 hole is greater than 3.0mm) must also meet the standard requirements.
2. Air tightness requirements:
The air tightness requirements of copper-aluminum connecting pipes are very strict, and a high-pressure test of 4.0MPa is required for 5 minutes to determine whether the connecting pipes are leaking. During the inspection process, the connecting pipe must remain stable without any leakage.
3. Pressure resistance performance requirements:
After passing the air tightness inspection, the pressure needs to be slowly increased to 13MPa and maintained for 1 minute. During this process, the copper-aluminum connecting pipe must not have any cracks or damage to ensure that it can withstand the high-pressure environment.
4. Bending performance requirements:
The bending performance requirements of copper-aluminum connecting pipes are very high. The sample needs to be bent into a bending core that is twice the nominal diameter of the pipe, and inspected after bending 180 degrees. The bent pipe should remain smooth and free of wrinkles and cracks.
5. Tensile strength requirements:
The tensile strength requirement of copper-aluminum connecting pipe is between 65-118mpa. In the tensile test, the tensile part should be on the side of the aluminum pipe, and the length of the weld should be greater than 10mm.
6. Sealing performance requirements:
The sealing performance requirements of copper-aluminum connecting pipes are very high. The KTG should have shrunk well and the sealing fittings have melted and been completely wrapped in the copper-aluminum joint. During the test, the sealing part cannot rotate or fall off.

Features:

Copper-aluminum air conditioning connecting pipe is an innovative air conditioning accessory. Through careful design and manufacturing, it perfectly combines the advantages of copper pipes and aluminum pipes, bringing many practical improvements to modern air conditioning systems.
The characteristics and advantages of this connecting pipe are mainly reflected in the following aspects:
1. Excellent durability and safety: The copper pipe part of the copper-aluminum air-conditioning connecting pipe can be perfectly connected with the brass parts of the internal and external units of the air conditioner, avoiding the risk of electrochemical corrosion that may occur between the aluminum tube and the brass parts. This connection method not only improves the durability of the connecting pipe, but also ensures the stability of its safety performance during long-term use.
2. Environmental protection advantages: Aluminum is a recyclable metal. By using aluminum tubes, copper-aluminum air conditioning connecting tubes not only reduce their own weight, but also reduce manufacturing costs. More importantly, the recyclability of this material reduces resource consumption and environmental damage, contributing to green environmental protection.
3. Efficient thermal insulation performance: Compared with pure aluminum pipes, the overall thermal insulation performance of copper-aluminum air conditioning connecting pipes is better. It can effectively maintain the temperature inside the connecting pipe, reduce the loss of refrigerant during the transportation process, thereby improving the cooling or heating efficiency of the air conditioner. This not only helps save energy but also improves air conditioning performance.
During the manufacturing process, the copper-aluminum air conditioning connecting pipe uses advanced welding technology to ensure the tight combination of the copper pipe and the aluminum pipe. In addition, its appearance is smooth and flat, and it is easy to install, further improving the convenience of use.
In general, copper-aluminum air-conditioning connecting pipes have become an indispensable part of modern air-conditioning systems due to their unique combination, excellent durability, environmental protection advantages, and efficient thermal insulation performance.

Applications:

evaporimeter

condensator

dehumidifier

Cold dry machine

warm air blower

etc.

Techical Parameters:

physical characteristics and composition

1. The bimetallic composite pipe has a tensile strength of 150–160 MPa, an elongation of 35–40%, and a pressure resistance of at least 15 MPa.

2, copper-clad aluminum tube for the integration of materials; copper and aluminum cannot be separated, as with bending, flaring, and softness in copper pipe.

3. The pipe's section has a copper to aluminum weight ratio of 60:40, the same specifications as the original copper pipe, and the same outer diameter and wall thickness.

Air conditioning connection pipe

(Technical requirements refer to national standards or customer technical quality requirements for production)

FAQ.:

Q1: aluminum alloy pipe compared with copper pipe, advantages and disadvantages?

A1: Aluminum pipe cost low ductility, but easy to corrosion. Copper pipes have good thermal conductivity and corrosion resistance, but the installation, preservation and transportation are not easy and the cost is high.

Q2: What should be noted in the installation of the air conditioning connection pipe?

A2: The alloy pipe is easy to install, but the link of copper and aluminum after a long time of chemical changes, will cause electrocouple corrosion.

Q3: How to deal with the corrosion problem?

A3: Our products use special corrosion resistant alloy, and the corrosion resistance effect is greatly improved compared with ordinary aluminum alloy. The corrosion resistance experiment is> 1000 hours, which greatly improves the service life of the product.

Q 4: What state and performance of aluminum pipe and aluminum alloy pipe can be produced?

A 4: It can produce performance products from hard state to soft state and interval.