Is it better to buy seamless or seamed aluminum tubes? Aluminum tubes are widely used, especially in home appliances, but copper is also used in many home appliances. Relatively speaking, Aluminum tubes have more advantages. At present, people who use aluminum tubes are the majority. There are also seamless aluminum tubes and seamed aluminum tubes. What is the difference between them?
What is the Seamless Aluminum Tube?
The seamless aluminum tube is made of pure aluminum or aluminum alloy by extrusion processing along its longitudinal length of the hollow aluminum tube without weld. The seamless tube will ideally be a solid metal tube with each end connected to another tube without having any welding joint.
There are two ways to make seamless tubes. One technique involves exerting a lot of effort while the aluminum billet is heated up in a Die and Mandrel Press. The alternative technique involves pushing a solid billet through a Piercer Press, and then, in a subsequent forward motion, a mandrel pierces and extrudes the billet. No matter which technique is utilized, the tube will have no seams or welds, which makes it perfect for anodizing and other finishing processes.
Seamless Aluminum Tube vs Seamed Aluminum Tube: Property
The pressure bearing capacity of a seamless aluminum pipe is better than that of welded aluminum pipe. The texture of the seamless aluminum pipe is uniform, and the chemical composition of the welded pipe will burn a little, so the mechanical properties are slightly worse, but the difference is not big. If used for elbows, seamless pipe is recommended. Welded pipes are prone to cracking. It will be fine if the bending radius is large.
For aluminum tubes of the same material:
Seamless aluminum tubes can be used as important parts for fluid parts such as water stamping, gas hydraulics, machining parts, grinding, and applications.
Seamed aluminum tubes are generally used as structural supports. Like some parts that do not require too high precision, the general support function is used more, but the pressure on the fluid is limited. In terms of performance, the seamless aluminum tube is stronger than the seamed aluminum tube, and the weight is higher than that of the seamed aluminum tube. Seamless aluminum tubes and seamed aluminum tubes have their own advantages and disadvantages. You can take what you need according to your own needs, and the product that can ultimately bring you economic benefits is the best product.
Seamless Aluminum Tube vs Seamed Aluminum Tube: Strength
If it is used as a structural part, the difference is not big. If it is used as a pipeline, the pressure bearing is different. The seamless is larger, and the seamless aluminum tube can withstand the pressure of water or other gases more than the seamed aluminum tube. Under the same material, the ability to resist bending, and whether it will deform after being slightly bent under the force.
The pressure bearing of seamless aluminum pipe is better than that of seamed aluminum pipe, the texture of seamless pipe is relatively uniform, and the chemical composition of welded pipe will have a small amount of burning loss in the weld part, so the mechanical properties are slightly worse but not very different. If it is used for the elbow, it is recommended to use a seamless aluminum tube. Welded pipes are prone to cracking. There is no problem if the bending radius is relatively large. The seamless aluminum tube is extruded by perforation, while the conventional aluminum tube is generally extruded by a combined die. In the production, the extrusion process of a short rod, high temperature, and slow speed is used, especially the “three temperatures” should be well controlled.