EN piping standards
European Standards (CEN): Harmonised European product and design standards; used with the Pressure Equipment Directive (PED 2014/68/EU). 27 standards most used in piping, flanges, fittings, valves and materials.
| Standard | Covers | Category | On this site |
|---|---|---|---|
| EN 1092-1 | Circular steel flanges, PN designated | Flanges | Open → |
| EN 1092-2 | Cast iron flanges | Flanges | Open → |
| EN 1092-3 | Copper alloy flanges | Flanges | Open → |
| EN 1514 series | Gaskets for PN-designated flanges | Gaskets | – |
| EN 10025 | Hot-rolled structural steels (S235, S275, S355) | Plate & structural | Open → |
| EN 10028-2 | Pressure-vessel plate, non-alloy and alloy for elevated temperature (P265GH) | Plate & structural | Open → |
| EN 10028-7 | Stainless steel plate for pressure purposes | Plate & structural | Open → |
| EN 10088 series | Stainless steels — list of grades and technical delivery conditions | Materials | Open → |
| EN 10204 | Types of inspection documents (2.1, 2.2, 3.1, 3.2) | Testing & inspection | – |
| EN 10216-1 | Seamless pressure tubes, non-alloy, room temperature | Pipe | Open → |
| EN 10216-2 | Seamless pressure tubes, non-alloy and alloy, elevated temperature | Pipe | Open → |
| EN 10216-3 | Seamless pressure tubes, alloy fine-grain steel | Pipe | Open → |
| EN 10216-4 | Seamless pressure tubes, low temperature | Pipe | Open → |
| EN 10216-5 | Seamless stainless steel pressure tubes | Pipe | Open → |
| EN 10217-1 to -7 | Welded pressure tubes (non-alloy, elevated temp, low temp, SAW, stainless) | Pipe | Open → |
| EN 10220 | Seamless and welded steel tubes — dimensions and masses per unit length | Pipe | Open → |
| EN 10222 series | Steel forgings for pressure purposes (Part 2 ferritic, Part 5 stainless) | Forgings | Open → |
| EN 10241 | Steel threaded pipe fittings | Fittings | Open → |
| EN 10242 | Threaded malleable cast iron pipe fittings | Fittings | Open → |
| EN 10253-1 to -4 | Buttwelding pipe fittings (carbon, alloy, austenitic and duplex) | Fittings | Open → |
| EN 10255 | Non-alloy steel tubes for welding and threading | Pipe | Open → |
| EN 10269 | Steels and nickel alloys for fasteners at elevated or low temperature | Bolting | Open → |
| EN 13445 | Unfired pressure vessels | Design codes | – |
| EN 13480 | Metallic industrial piping | Design codes | – |
| EN ISO 1127 | Stainless steel tubes — dimensions, tolerances and masses | Pipe | Open → |
| EN ISO 9606-1 | Qualification testing of welders — steels | Welding | – |
| EN ISO 15614-1 | Welding procedure qualification test (WPQR) — steels and nickel alloys | Welding | – |
Subjects are short summaries, not official titles. Always buy the current edition from the issuing body; check which edition your project specification names.
Frequently asked questions
Which EN standards cover piping?
EN 1092-1 (circular steel flanges); EN 1092-2 (cast iron flanges); EN 1092-3 (copper alloy flanges); EN 1514 series (gaskets for pn-designated flanges); EN 10025 (hot-rolled structural steels); EN 10028-2 (pressure-vessel plate) and others listed on this page.
Last updated 2026-11-02