ÖNORM EN 755-8

This part of EN 755 specifies the tolerances on dimensions and form for aluminium and aluminium alloy extruded porthole tubes with an outside diameter (OD) from 8 mm to 450 mm (round tube, See figure 1) or with a Cross section contained within a circurnscribing circle (CD) from 10 mm to 350 mm (other than round tube, See figure 2), supplied in straight lengths. This standard only applies to extruded porthole tube for general engineering applications made in the following alloys : EN AW-1050A, EN AW-1200, EN AW-1350; EN AW-3003, EN AW-3103; EN AW-5005, EN AW-5005A, EN AW- 5051A, EN AW-5251, EN AW-5052; EN AW-6101A, EN AW-6101B, EN AW-6005, EN AW-6005A, EN AW- 6012, EN AW-6018, EN AW-6351, EN AW-6060, EN AW-6061, EN AW-6261, EN AW-6262, EN AW-6063, EN AW-6063A, EN AW-6463, EN AW-6081, EN AW-6082, EN AW-7003, EN AW-7005, EN AW-7020. This standard only applies to tube produced by the tube portholefbridge method. This standard does not apply to extruded tube produced by the seamless, die/mandrel method or coiled tube.