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 circumscribing circle (CD) from 10 mm to 350 mm (other than round tube, see Figure 2), supplied in straight lengths.
This standard applies only to extruded porthole tube for general engineering applications made in the following alloys:
EN AW-1050A, ENAW-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 applies only to tube produced by the tube porthole/bridge method. This standard does not apply to extruded tube produced by the seamless, die/mandrel method or coiled tube.
BS EN 755-8:1998 history
2016BS EN 755-8:2016 Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Porthole tubes, tolerances on dimensions and form
2008BS EN 755-8:2008 Aluminium and aluminium alloys — Extruded rod/bar, tube and profiles — Part 8: Porthole tubes, tolerances on dimensions and form
1998BS EN 755-8:1998 Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Porthole tubes, tolerances on dimensions and form