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7-wire PC strand is a type of high-strength steel wire consisting of seven individual steel wires twisted together. With its optimized 1+6 construction (1 straight core wire + 6 helical outer wires), it provides high tensile strength while maintaining excellent ductility and bonding properties. It's primarily used in construction to reinforce concrete structures by introducing a compressive force into the concrete, which helps it withstand tensile stresses and prevent cracking. This makes it suitable for various concrete structures like bridges, buildings, roads and railways etc.

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