Seamless Aluminum Tube

Either the bridge dies method or the porthole method is used to create the structural tubes. At high temperatures (About 400 ℃ – 500 ℃), a solid aluminum billet is driven through the die with great force. While going through the extrusion die, the tube separates throughout the process and is put back together by an intrinsic welding process. If the tube is anodized or other processing, the seam is just barely visible enough to be seen with the unaided eye.

By using a press machine, both structural and seamless tubes are extruded. This implies that similar to the extrusion technique used to create other structural profiles, the aluminum billet is forced through a hole in a die that has been formed to create the two-dimensional cross-section you require.

Internal pressure applications need the use of seamless extruded tubes. Examples include hydraulic cylinders, pipes, and fittings. They are also employed when the extrusion will be deformed significantly. Bending electrical conduit or bus bars is a good illustration of this.

Another type of application involves high loads, which will distort the tube or extrusion if it is not strong enough. Aircraft seat frames, baseball bats, and driveshafts are examples of this type. When looks are crucial, you may also choose the seamless. This is especially true if the extrusion will be anodized, as the seam will be highlighted.

Structural tubing is suitable for all applications that do not require strong forces. Examples include railings and window frames, as well as wall framing and other architectural and aesthetic applications. More industrial examples include enclosure frames, material handling carts, and machine guards. Structural tubing is also useful in many trailer and RV applications.