BS EN 10242 is a European Standard that specifies the requirements for the design, manufacture, and testing of socket weld fittings. The standard is published by the British Standards Institution (BSI) and is widely adopted across Europe and other parts of the world. In this article, we will provide an overview of BS EN 10242, its scope, and requirements, as well as the benefits of using this standard. We will also discuss how to obtain a PDF copy of the standard.
Capable of handling up to 25 bar (2.5 MPa) pressure.
The standard applies to fittings used for connecting pipes in sizes ranging from ISO 7-1 thread designation 1/8 to 6. These fittings are commonly utilized in applications involving water, gas, steam, and compressed air. Design Symbols
, specifying requirements for their design, performance, and testing. While the 1995 version is widely cited, a major update, BS EN 10242:2025 , was released in late 2025. ValvesTubesFittings.com 1. Scope and Applications Bs En 10242 Pdf
BS EN 10242 uses "Design Symbols" to help engineers specify the exact material and thread combination required for a project: Design Symbol A:
Threaded pipe fittings in malleable cast iron.
stands for European Norm (harmonized across member states). BS EN 10242 is a European Standard that
Ensure uniform engagement with the external taper thread.
Connects two straight lengths of threaded pipe.
For systems handling water, air, or damp environments, fittings receive a hot-dip zinc coating. The standard sets strict rules for this process: We will also discuss how to obtain a
Drinking water distribution, natural gas pipelines, sprinkler systems, and low-pressure fluid transmission. Jianzhi Pipe Fittings 2. Technical Specifications Requirement
Aligns closely with ISO 49 and replaced older British Standards like BS 143 and 1256 for most applications.
Fittings under this standard are classified by design symbols (A, B, C, D) which dictate their specific manufacturing quality, thread types, and inspection requirements. Design symbol A represents the highest tier, requiring premium material grades and precise testing. Technical Specifications and Requirements