Mass Manufacturing Factory Price Copper Aluminium Connection Pipe Tube For Air Conditioners
Why use copper and aluminum instead of directly using aluminum tubes?
1, the metal ductility of aluminum is poor than copper, so the success rate of copper is easier to operate and the quality is higher than that of aluminum when the operation of the expanding horn at the end of the connecting tube is carried out.
2, the air conditioning system inside and outside the machine connection, whether it is a stop valve or copper nut are brass parts. Direct contact between brass and aluminum is prone to electrochemical corrosion in humid and high-salt environments. At the same time, the sealing principle of the interface is also dependent on the ductility of the metal to produce plastic deformation and achieve sealing. If the aluminum horn is used, it is easy to produce poor sealing due to the problem of aluminum ductility.
Based on the above two reasons, the copper-aluminum connection pipe is actually connected to a small section of copper pipe by welding at both ends of an aluminum pipe, and then the copper pipe is connected with the globe valve and the copper nut in accordance with the conventional connection method. Among them, the heat shrink tube plays a great role, and the heat shrink tube will be closely fitted with the wall surface, so as to achieve a certain degree of sealing, and avoid the dissimilar metal lap position in the scene of high salt and high humidity, so as to solve the problem of electrochemical corrosion.
| Outer diameter | 6.35 mm; 9.52 mm;12.7 mm;15.88 mm;19.05 mm |
| Length | 3-10mm |
| Cu(min) | 10% |
| Wall thickness | 0.7-1.2 mm |
| Insulation pipe thickness | 8mm |
| Elongation(≥%) | 40% |
| Tensile strength(≥MPa) | 170 |
| Alloy or not | Alloy |
| Material | XPE or RUBBER |
| Application | Air condition or refrigerator |
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