A seamless aluminum tube, by definition, contains no weld seam, which provides superior integrity and pressure-bearing capacity. CHAL’s seamless tubes span a wide outer diameter range (8 mm up to 280 mm) and wall thicknesses from as thin as 0.1 mm to 20 mm. These tubes are available in high-performance alloys including 6061, 7075, 5052, and more, accommodating structural, fluid, or pressure vessel applications.
https://www.chaluminium.com/al....uminium-tube/seamles