One of the most common points of confusion is how this standard interacts with others.
| Standard | Scope | | :--- | :--- | | BS EN 10311 | Jointing procedure qualification (how to join pipes) | | BS EN 10217 | Technical delivery conditions for welded steel tubes | | BS EN 10216 | Seamless steel tubes for pressure purposes | | BS EN 12732 | Specific requirements for welding steel gas pipelines | | ASME B31.3 | Process piping (US standard, often used globally) |
Important: BS EN 10311 does not replace ASME IX or ISO 15614. However, it is harmonized with the Pressure Equipment Directive (PED), making it mandatory for CE/UKCA marking of steel pipelines in Europe and the UK. Bs En 10311 Pdf
The standard includes non-mandatory installation practices covering:
BS EN 10311 specifies requirements for mechanical joints used to connect steel tubes and fittings for fluid transport (e.g., water, gas, oil, steam, chemicals). It applies to joint types intended for: One of the most common points of confusion
A: It is mandatory for pipelines covered by the Pressure Equipment Directive (PED) within the EU/UK. For pipelines outside this jurisdiction (e.g., US, Middle East), clients often still require it as a best practice or as a contractual specification.
A: Yes. As of 2025, the current version is BS EN 10311:2005 (confirmed in 2020). Always check the BSI website for amendments. and stainless steels.
The standard divides qualification into two categories:
A: Yes. The standard applies to all steel grades, including carbon, low-alloy, and stainless steels.