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Sealings for air handling units
BS EN 13363-1:2003+A1:2007 Solar protection devices combined with glazing
Bolt and nut assemblies conforming to this document may include washer(s) according to BS EN 14399-6 or to BS EN 14399-5 (under the nut only)
Electrically-driven vapour compression cycle (VCC) heat pumps
Hardmetals. Knoop hardness test Ingestion-build-100998 Sealings for air handling unitsBS ISO 22394: 2010 Hardmetals. Knoop hardness test Many metallurgical problems require the determination of hardness over very small areas. The special shape of the Knoop indenter makes it possible to place indentations much closer together than with a square Vickers indentation, e. g. to measure a steep hardness gradient. For a given long diagonal length, the depth and area of the Knoop indentation are known to be only 15 % of what they would be for