What is BS EN 1759-4 - Aluminium alloy flanges about?

BS EN 1759 is a European Standard on flanges and their joints that discusses the circular flanges for pipes, valves, fittings and accessories, class designated. The main aim of the BS EN 1759 series is to provide manufacturers with best industry practices to ensure structural integrity and leak tightness of flange and bolted connections, such that they are fit for its intended use.

BS EN 1759-4 is the fourth part of the BS EN 1759 series that specifies requirements for Class designated circular flanges for pipes, valves, fittings and accessories made from the aluminium alloy in the range of DN 15 to DN 600 (NPS 1/2 to NPS 24) and Class 150 to Class 300.

BS EN 1759-4 specifies the types of flanges and their facings, dimensions and tolerances, bolt sizes, surface finish of jointing faces, marking and materials together with associated pressure temperature (p/T) ratings.

The flanges are intended to be used for piping as well as for pressure vessels.

Who is BS EN 1759-4 - Aluminium alloy flanges for?

BS EN 1759-4 on aluminum alloy flanges is useful for:

Manufacturers of pipes and pipe fittings
Designers of flanges, couplings and joints
Manufacturers of aluminum alloys
Operators and constructor
Technical authority
Mechanical engineers
Product design engineers
Certification bodies

Why should you use BS EN 1759-4 - Aluminum alloy flanges?

Aluminum alloy offers some great properties that are used in many industries for different purposes as it offers excellent corrosion resistance and protects the surface from the outer harmful environment providing excellent thermal and electrical conductivity. Aluminum alloy flanges made with this alloy offer excellent properties like formability, weldability, malleability, tensile strength and many more.

In this regard, BS EN 1759-4 provides the designations and types of flanges as well as the range of nominal sizes and class designations of aluminum alloy flanges.

BS EN 1759-4 covers the general requirements of flange materials, repairs, bolting, gaskets, flange facings and marking on flanges.

As a result, if you are a manufacturer of flange joints, conforming to BS EN 1759-4 can help demonstrate the performance and credibility of your product, ensuring that they are suitable for its purpose and achieve the stated level of joint tightness with accuracy.

BS EN 1759-4:2003

Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, class designated - Aluminium alloy flanges

Current, Under Review

Published:

1 Oct 2003