NBN EN 755-8:2008

This document 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 circumscribing 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-5049, EN AW-5051A, EN AW-5251, EN AW-5052;
- EN AW-6101A, EN AW-6101B, EN AW-6005, EN AW-6005A, EN AW-6008, EN AW-6110A, EN AW-6012, EN AW-6014, EN AW-6018, EN AW-6351, EN AW-6060, EN AW-6360, EN AW-6061, EN AW-6261,
EN AW-6262, EN AW-6262A, EN AW-6063, EN AW-6063A, EN AW-6463, EN AW-6065, EN AW-6081,
EN AW-6082; EN AW-6182,
- EN AW-7003, EN AW-7005, EN AW-7108, EN AW-7108A, EN AW-7020.
The temper designations used in this part are according to EN 515.
This standard only applies to tube produced by the tube porthole/bridge method.
This standard does not apply to:
- extruded tubes produced by the seamless, die/mandrel method (EN 755-7),
- tubes delivered in coils (prEN 13957),
- coiled tubes cut to length (prEN 13957).