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Aerospace series. Pipe coupling 37°, spherical, in heat resisting steel. Straight nipples, welded end. Inch series. Original standard BS EN 4552-2015 in PDF full version. Additional info + preview on request

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Aerospace series. Pipe coupling 37°, spherical, in heat resisting steel. Elbow 90° nipples, welded end. Inch series. Original standard BS EN 4553-2003 in PDF full version. Additional info + preview on request

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Aerospace series. Pipe coupling 37°, spherical, in heat resisting steel. Straight unions, threaded. Inch series. Original standard BS EN 4554-2003 in PDF full version. Additional info + preview on request

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Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - General requirements and test methods. Original standard BS EN 45544-1-2015 in PDF full version. Additional info + preview on request

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Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Performance requirements for apparatus used for exposure measurement. Original standard BS EN 45544-2-2015 in PDF full version. Additional info + preview on request

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Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Performance requirements for apparatus used for general gas detection. Original standard BS EN 45544-3-2015 in PDF full version. Additional info + preview on request

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