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prEN 12451 Public enquiry
Comment end date 2026-11-08
Copper and copper alloys - Seamless, round tubes for heat exchangers

This document specifies the composition, property requirements and tolerances on dimensions and form for seamless round drawn copper and copper alloy tubes for heat exchangers, condensers, evaporators and desalination equipment. It is applicable to copper and copper alloy tubes supplied in the size range from 6 mm up to and including 76 mm outside diameter and from 0,5 mm up to and including 3 mm wall thickness. The sampling procedures and the methods of test for verification of conformity to the requirements of this document are also specified.

prEN 12452 Public enquiry
Comment end date 2026-11-08
Copper and copper alloys - Rolled, finned, seamless tubes for heat exchangers

This document specifies the composition, property requirements and tolerances on dimensions and form for rolled, finned, seamless copper and copper alloy tubes for heat exchangers. It is applicable to copper and copper alloy tubes supplied in the size range from 6 mm up to and including 35 mm outside diameter; from 1 mm up to and including 3,5 mm wall thickness of the unfinned section; and with fin height up to and including 4,5 mm. The sampling procedures and the methods of testing for verification of conformity to the requirements of this document are also specified.

prEN ISO 20482 Public enquiry
Comment end date 2026-11-01
Metallic materials - Sheet and strip - Erichsen cupping test (ISO/DIS 20482:2026)

ISO 20482:2013 specifies a standard test method for determining the ability of metallic sheets and strips having a thickness from 0,1 mm up to 2 mm and a width of 90 mm or greater to undergo plastic deformation in stretch forming. For materials that are thicker and when only narrower strips are available, tools of specified dimensions are provided, in which case subscripts are used, as shown in Table 1.

EN ISO 683-3:2022/prA1 Public enquiry
Comment end date 2026-10-27
Heat-treatable steels, alloy steels and free-cutting steels - Part 3: Case-hardening steels - Amendment 1 (ISO 683-3:2022/DAM 1:2026)
prEN 755-8 Public enquiry
Comment end date 2026-10-27
Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 8: Porthole tubes, tolerances on dimensions and form

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

EN 573-3:2026/prA1 Public enquiry
Comment end date 2026-10-17
Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 3: Chemical composition and form of products

This document specifies the chemical composition limits of wrought aluminium and wrought aluminium alloys and form of products. NOTE The chemical composition limits of aluminium and aluminium alloys specified herein are completely identical with those registered with the Aluminium Association, 1525, Wilson Boulevard, Suite 600, Arlington, VA 22209, USA, for the corresponding alloys.

EN 10338:2025/prA1 Public enquiry
Comment end date 2026-10-18
Hot rolled and cold rolled non-coated products of multiphase steels for cold forming - Technical delivery conditions

This document applies to hot rolled and cold rolled non-coated steel flat products made of multiphase steels for cold forming. It covers cold rolled products of thicknesses t < 3 mm and hot rolled products of thicknesses t ≤ 6,5 mm. These products are delivered in sheet, hot rolled strip, slit hot rolled strip, cold strip, slit cold rolled strip or cut lengths obtained from slit wide strip. Flat products of multiphase steels for cold forming can be delivered with an electrolytic zinc coating according to EN 10152.

prEN 10111 Public enquiry
Comment end date 2026-10-11
Continuously hot rolled low carbon steel sheet and strip for cold forming - Technical delivery conditions

This European Standard specifies the grades of continuously hot rolled low carbon steel sheet and strip (in coils) for cold forming. Depending on its actual width, strip is classified as: - hot rolled wide strip if its width is greater than or equal to 600 mm; - hot rolled slit wide strip if its width is less than 600 mm. For each grade, it specifies the chemical composition and the mechanical properties. This European Standard is applicable to products of thickness not less than 1,0 mm and not exceeding 11 mm. This European Standard is not applicable to products covered by other standards, such as: - hot rolled products of non-alloy structural steels for general use (see EN 10025 all parts); - steel sheet for pressure purposes (see EN 10028 all parts); - steel sheet for welded gas cylinders (see EN 10120); - quenched and tempered steels (see EN 10083-1 and EN 10083-2).

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