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the hardness of quenching and tempered
Any process which increases the hardness of a metal,generally speaking,heating treatment with hardened and tempered base steel from a temperature either within or above the critical temperature range,and different application required various hardness,such bandsaw blade(44-48hrc),rolling door spring(43-48hrc),hand building tools(44-46hrc),shoes shank,shoes insole(annealed).etc.
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Hardened and tempered steel stripRolling shutter spring steel stripBand saw balde steel stripsNarrow steel stripWood/ meat cutting band saw bladeHigh tensile steel strapping
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