What is BS EN 754-7 - Seamless tubes about?
BS EN 754 is a series of European standards on aluminium and aluminium alloys that discusses the best procedures and specifications required for manufacturing high-quality cold drawn seamless tubes. BS EN 754-7 is the seventh part of a series of documents on aluminium and aluminium alloys. BS EN 754-7 specifies the tolerances on dimensions and form for aluminium and aluminium alloys cold drawn seamless tubes with an outside diameter (OD) from 3 mm to 350 mm (round tube, or with a cross-section contained within a circumscribing circle (CD) from 8 mm to 300 mm (other than a round tube, see Figure 2) supplied in straight lengths.
BS EN 754-7 only applies to tubes produced by the seamless die/mandrel method of extrusion (and then cold drawn to the final dimensions required).
The temper designations used in this part are according to EN 515.
BS EN 754-7 applies to cold drawn, seamless tubes for general engineering applications.
BS EN 754-7 does not apply to:
- Cold drawn tube produced by the porthole/bridge method (EN 754-8),
- Tubes delivered in coils (EN 13958),
- Coiled tubes cut to length (EN 13958).
Who is BS EN 754-7 - Seamless tubes for?
BS EN 754-7 on aluminium and aluminium alloy is relevant to:
- Manufacturer of aluminium and aluminium alloys cold drawn seamless tubes
Why should you use BS EN 754-7- Seamless tubes?
A seamless tube is a tube that does not have any welding seam. The seamless tube will ideally be a solid metal tube with each end connected to another tube without having any welding joint. These tubes have threads either at one end or at both ends and can be threaded to the end of another hollow tube or pipe.
BS EN 754-7 provide guidance on tolerances on dimensions, diameter - round tube, width, depth or width across flats - squares, rectangles, hexagons, octagons, wall thickness variation (eccentricity), straightness, convexity-concavity, twist, angularity, corner and fillet radii, depth of dents for round tube.
BS EN 754-7 exemplifies the required tolerances on dimensions that help you achieve precision in terms of product functionality and specification.
As a user of BS EN 754-7, you can be ensured of the dimensions of aluminium and aluminium alloys seamless tubes. With obedience and compliance to BS EN 754-7, you can efficiently manufacture high-quality precise aluminium and aluminium alloys cold drawn seamless tubes. BS EN 754-7 helps you to build consumer trust and confidence in the product. With BS EN 754-7 you can be ensured that the products consistently meet and exceed quality assurance targets. BS EN 754-7 provides you with comprehensive information useful throughout the process of production.
What’s changed since the last update?
BS EN 754-7:2016 supersedes BS EN 754-7:2008 which is withdrawn.
The following technical modifications have been introduced during the revision:
- Correction of Subclause 3.2, Diameter - Round tube