Steel grade:GB 60Si2MnA, 30Si2CrVA, 60Si2CrA, 50CrVA, 50CrV4, 51CrV4JIS SUP6 / SUP7, SUP10ASTM 9260, 6150EN 61SiCr7, 54SiCr6, 51CrV4Diameter: 12mm-130mmWe supply spring steel in various specification, ... ...
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