prEN 755-8
Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 8: Porthole tubes, tolerances on dimensions and form
Draft Public enquiryProject stage codes
1. Prioritetinių darbo temų pažymėjimas ir ekspertų skyrimas
2. Projektas
3. Viešoji apklausa
From 2026-08-24
till 2026-10-27
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
77.150.10 - Aluminium productsTechnical Committee
TK 49 Metallic materialsForeignTC'S
CEN/TC 132Number of comments
0Comment start date
2026-08-24Scope
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. The temper designations used in this part are according to EN 515. This document only applies to tube produced by the tube porthole/bridge method. This document does not apply to: — extruded tubes produced by the seamless, die/mandrel method (EN 755-7); — tubes delivered in coils (EN 13957); — coiled tubes cut to length (EN 13957). Figure 1 — Round tube Figure 2 — Circumscribing circle for other than round tube