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Cold Forming is the common term for taking coils of steel wire or cylindrical steel rods and pressing them into a shape with mechanical force (de-forming the material). The manufacturing of cold-formed steel products occurs at room temperature using mechanical pressure known as cold heading and thread rolling.
European standard grades for steel products follow a set naming structure. Each grade starts with a single letter, and is followed by a number. The letter relates to the application and the number relates to the yield strength of the steel. Steel used for reinforcing concrete has the application letter B, and the number 500, which represents a minimum yield strength of 500MPa. The grades for reinforcement steel then have a final letter A, B or C.
A615 steel rebar has a rough, blue-grey finish with raised ribs throughout the bar. Designed for use in concrete reinforcement, rebar increases the tensile strength of concrete structures. ASTM A615 is the standard specification for deformed and plain carbon steel bars for concrete reinforcement.
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