Lays down the information necessary in order to determine the most suitable material for a particular purpose. The cylindrical cores are usually made of metal in a wide variety of sizes. The covering varies in hardness, type of material and surface treatment depending on use. This determines physical and chemical properties of the covering. One figure with details of the coverings.
Life cycle
NOW
PUBLISHED ISO/TR 7621:1982 90.93
Standard confirmed 25 tet 2007
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