Copper Coated Steel Fiber Strip Micro Steel for Construction. High Tensile Strength: Minimum tensile strength of 1150MPa for superior structural reinforcement. Versatile Application: Ideal for shotcrete, tunnels, highways, and bridge pavements. Enhanced Durability: Improves crack resistance, impact resistance, and freeze-thaw performance. Customizable Options: Length, diameter, and tensile strength are customizable to meet specific needs. Cost Effective: Reduces steel reinforcement requirements and controls crack widths tightly. Free Sample Available: Provide 1kg free sample for customer evaluation before bulk order.