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Fire detection and fire alarm systems Part 2- Control and indicating equipment. Original standard BS EN 54-2-1997 (2009) in PDF full version. Additional info + preview on request

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Industrial valves. Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems. PN and Class designated valves. Original standard BS EN 558-2022 in PDF full version. Additional info + preview on request

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Furniture. Assessment of the ignitability of mattresses and upholstered bed bases - Ignition source smouldering cigarette. Original standard BS EN 597-1-2015 in PDF full version. Additional info + preview on request

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Furniture. Assessment of the ignitability of mattresses and upholstered bed bases - Ignition source- match flame equivalent. Original standard BS EN 597-2-2015 in PDF full version. Additional info + preview on request

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Letter symbols to be used in electrical technology Part 1- General (IEC 60027-1-1995 (Reprint) + A1-1997). Original standard BS EN 60027-1-2006 + A2-2007 (2009) in PDF full version. Additional info + preview on request

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Letter symbols to be used in electrical technology - Power generation, transmission and distribution. Original standard BS EN 60027-7-2010 in PDF full version. Additional info + preview on request

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