drill steel

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الإنجليزية - التركية
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hexagonal drill steel
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الإنجليزية - الإنجليزية
A high-grade steel used in tools and dies that is made by fusing low-carbon steel with charcoal or cast iron. Formerly prepared in a graphite crucible, it is now produced in an electric furnace. Also called crucible steel
carbon steel used for rock drills and dowels
drill steel
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