DIN EN 13480-3:2024-12

Design and Calculation of Metallic Industrial Piping

DIN EN 13480-3 specifies requirements for the design and calculation of metallic industrial piping. It describes methods for designing piping systems, piping components and supports, taking into account pressure, temperature, mechanical loads and operating conditions. The standard is a central part of the EN 13480 series and supports the safe, standards-compliant planning of industrial piping systems.

What is DIN EN 13480-3 about?

The standard defines calculation and design methods for industrial piping made of metallic materials. The focus is on wall thickness calculation, determining permissible stresses and verifying the strength and operational safety of piping systems. It also covers piping components, stress analyses, fatigue assessments and pipe supports as well as measures for absorbing pressure, temperature and external loads.

Topics covered

• Design and calculation of metallic piping
• Design under internal and external pressure
• Permissible stresses and wall thickness calculation
• Pipe bends, reducers, ends and flange connections
• Openings, branches and piping attachments
• Stress analysis, fatigue and cyclic loading
• Pipe supports, expansion joints and vibration considerations
• Material properties and physical properties of steels
• Verification according to the Pressure Equipment Directive 2014/68/EU

Practical relevance

Industrial piping is often exposed to high pressure, temperature and cyclic loads. DIN EN 13480-3 provides a uniform basis for strength calculation, stress analysis and the design of piping systems. It helps designers, engineers and plant operators ensure the safety, reliability and availability of industrial piping systems throughout their entire life cycle.

The requirements for pipe supports, expansion joints, fatigue assessments, flange connections and pressure loads are particularly relevant, as these have a significant impact on the operational safety of industrial plants.

Changes compared with DIN EN 13480-3:2017-12

The 2024 edition consolidates the previous standard, including Amendments A1 to A5, into a single document. At the same time, numerous sections have been extensively revised, including the basic design criteria, permissible stresses, pressure calculations, stress analyses, pipe supports and fatigue assessments. Annex R on the monitoring of components operated in the creep range has also been added. In addition, normative references have been updated and various calculation methods have been expanded and clarified.

Target audience

• Piping designers
• Engineers in plant and power plant construction
• Design engineers for industrial piping systems
• Operators of process engineering plants
• Inspection and monitoring bodies
• Experts for pressure equipment
• Manufacturers of piping components
• Specialists in calculation, strength verification and plant safety

Conclusion

DIN EN 13480-3 provides the central basis for the strength and safety verification of metallic industrial piping. It supports standards-compliant planning and the reliable operation of piping systems in industrial, energy and process plants.

This document replaces DIN EN 13480-3/A1:2021-05 , DIN EN 13480-3/A2:2020-12 , DIN EN 13480-3/A3:2020-12 , DIN EN 13480-3/A4:2021-11 , DIN EN 13480-3/A5:2023-04 , DIN EN 13480-3:2017-12 .