European pipe standards

European pipe standards

What are European pipe standards?

These standards cater to various piping components, defining specifications for testing requirements, classification, analysis, etc., for different industrial products. The European Committee for Iron and Steel Standardization (ECISS), a part of the European Committee of Standardization, lays down en standards. The prime goal is to ascertain technical harmony within the European Union.
European standards from the UK are also called British Standards (bs en standards). You can identify the origin from the prefix set by the member state. For instance, Germany uses DIN EN, while Sweden refers to it as SIS EN.
These standards are voluntary, except in situations like public procurement. In such cases, you may need to verify the adherence to European pipe standards.

Verified Supplier

Verified Suppliers

available 10 cars

European pipe size standards, dimensions, and specification

European Pipe Standards

Check other grades for best price


Both standards get commonly applied across industries to ensure quality and safety. The difference stems from the origin, wherein ASTM is American, and EN refers to a pipeline European standard. The American Society for Testing and Materials designed the former to standardise products across industrial sectors in different geographies. Today, you can find the two widely applied in industries like petrochemicals and construction across the globe.
The two standards comprise requirements for material testing. You won’t find much technical difference that makes one system stricter than the other. However, EN requires elevated temperatures for proof testing and states a minimum value for absorbed energy during an impact test.

Where are en standards used?

EN standards apply to components manufactured or used in Europe for different industries like construction, chemical processing, and shipbuilding. You can find them for fittings, pipes, flanges, bolts, etc., in diverse materials. The en standards for pipe and other accessories apply at a pan-Europe level, superseding national standards in case of a conflict.
These standards help with interoperability in industries, helping manufacturers ensure compliance at a global level. They also verify safety and contribute toward cost reduction by letting diverse components adapt to the value chain without glitches. An en certification customarily gets used with policies and legislations in the European Union.

What are European pipe marking standards?

Adopting appropriate pipe marking is crucial to ensure the health and safety of the workers. European pipe marking standards have rules to mark industrial materials for correct and quick identification. Typically, they involve using colours and labels in particular locations. The colour should reflect the substance getting transmitted through the tube.
For instance, a fire service installation gets marked in red. Pipes carrying oil get marked in brown.
Besides colour coding, these standards also require you to name the contents, use danger symbols as needed, and mention any standard phrases.

A seven-digit EC number allocated by the European Commission is also part of the marking to denote the chemicals in the pipe. Finally, an EEC label certifies that the piping is regulated. The places of marking are also significant. A thumb rule is to label within one meter of any structure the pipe enters or exits.
The requirements cover above-ground or exposed pipes. Making sure that these standards get implemented is the prerogative of the safety officer of the establishment. Failing to do so can make the company blameworthy for any mishap.


EN or European Standards define specifications for industrial components to ensure quality, safety, and performance. Here, the EN stands for Europaische Norm and applies across Europe. It defines European pipe sizes, testing techniques, dimensions, etc.
DIN is the handiwork of standardisation done with a national scope in Germany by the Deutsches Institut für Normung. The difference lies in the range and application of the two standards. The European Council dictates that the en standard meaning gets implemented without variations, and conflicting national standards must get withdrawn.
EN and DIN are the most prevalent standards today with ISO. However, other bodies in different countries may have their specifications.

What are European pipe thread standards?

The popular pipe threads in Europe are DIN and BSPP (British Standard Parallel Pipe). DIN, a metric thread, is a popular European standard pipe thread. It features in hydraulic applications, oil and gas industries, and machinery. Usually, it has a 1.5mm thread pitch.
In BSPP, the male and female threads are both parallel. The thread flank angle is 55°. BSPP is a common threading standard in the UK and other parts of Europe.
Identifying the thread type is vital because DIN and BSPT threads can often share similarities. For instance, you may have a 30° on the male in a DIN style, like a BSPP male.