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This Environmental Product Declaration (EPD) is for business to business communication. The EPD refers to ELVAL ENF Corrugated type B trapezoidal sheets. This product family is composed of aluminium coil-coated sheets specifically adapted for external cladding and roofing applications. The aluminium and aluminium alloy sheets are preliminary rolled to the requisite thickness and treated thermally in accordance with customer specifications. Aluminium coil is then pre-treated and then coated. Finally, the flat coil coated sheet are corrugated into a trapezoidal shape to provide more rigidity to the sheet. The type of coating and the delivery dimensions (i.e. corrugated sheet cut to length) are customised according to client requirements. ELVAL ENF corrugated coil coated sheets (Trapezoidal type B) are semi-finished products which are usually further processed (e.g. by cutting, forming or machining operations) to be converted into a final product to be installed on a building, e.g. cladding panel.