is the current version, having superseded the 1995 edition as of December 2025. BSI Knowledge 1. Scope and Technical Specifications
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The standard explicitly warns against welding malleable iron or cast steel threaded fittings unless the manufacturer gives written approval. The heat from welding can alter the microstructure and cause brittle failure. Always use threaded connections. is the current version, having superseded the 1995
BS EN 10242 specifies the requirements for the design, performance, and testing of threaded pipe fittings malleable cast iron The standard explicitly warns against welding malleable iron
: Specifies requirements for malleable cast iron grades, such as EN-GJMW-400-5 (whiteheart) or EN-GJMB-350-10 (blackheart).