Tubes- seamless - Import export

Seamless aluminium tubes can be ordered in all commercially available aluminium alloys in addition to high strength aluminium alloys which are required for more demanding applications. ALUnna has a number of extrusion presses equipped with mandrel piercing capability. This allows us to extrude a large range of extruded tubular dimensions from a number of different billet diameters. The size range for seamless extruded tubes ranges from 17 mm to 300 mm in diameter.

Aluminiumwerk Unna AG is specialised in the production of Aluminium tubes. The Aluminium tubes are extruded on site using two possible methods. These are either Seamless extrusion or Porthole extrusion. It is quite simple to distinguish between the two extrusion methods. In seamless extrusion, a mandrel is positioned and fixed inside the extrusion die, creating the inner contour of the tube. In porthole extrusion, the mandrel is fixed and is supported by a number of integral bridges affixed to the outer portion of the extrusion die.

* seamless steel tubes EN 10216-1 | EN 10216-2 | EN 10216-3 | EN 10297-1 OD 17,2 - 660 mm | WT 2 - 75 mm EN 10210-2 OD 21,3 - 323,9 mm | WT 2 - 12,7 mm EN 10255 L/M/H OD 21,3 - 165,1 mm | WT 2 - 4,5 mm(L), 2,6 - 5 mm(M), 3,2 - 5,4 mm(H)