12 PRECISION TUBES APPLICATIONS Starting from steel strips, produced by Acciaieria Arvedi, which guarantee constant mechanical characteristics and close wall thickness tolerances, ATA produces high frequency induction welded (HFI) precision tubes in compliance with standard EN 10305-3 and in accordance with customer specifications. These tubes, which have the most severe prescriptions on dimensional tolerances are often processed with deep deformations and the obtained finished products are then frequently subjected to occasional loads or continuous fatigue stress. Industrial parts, machinery such as rolls, moving structures and crane parts are examples of their applications. ARVEDI Mother shell for cold drawing represent ATA’s core business; for this specific application, ATA confirms its position as a leader in Europe and the only independent supplier of these products. These tubes can be produced as hot stretch-reduced or welded from black or pickled stripe and according to standard EN10305-3, EN10210, EN 10296 or to customer specification; they are made in a wide range of steel grades and in the full size range of diameters from 17 to 355,6 mm and wall thicknesses from 1.5 to 16 mm. ARVEDI mother shell are suitable for cold drawing to obtain tubes with close tolerances and low roughness used in particular in the automotive sector and hydraulic or pneumatic industry. WELDED PRECISION TUBES MOTHER SHELL FOR COLD DRAWING
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