Copper Coated Steel Fiber with 0.2*16mm Good Crack Resistance Use in Bridge Construction Material. High Crack Resistance: Significantly improves tensile strength, flexural strength, and crack resistance in concrete. Versatile Application: Ideal for bridge construction, shotcrete, tunnels, mine support, and highway pavements. ISO Certified Quality: Manufactured with ISO certification ensuring high standards for steel fiber reinforced concrete. Customizable Specifications: Length, diameter, and tensile strength are customizable to meet specific project requirements. Cost Effective: Reduces steel reinforcement requirements and controls crack widths to improve durability. Free Sample Available: Customers can request a 1kg free sample to test product quality before bulk ordering. Fast Delivery: Normal lead time is 5-10 days, with peak season times up to one month. Professional Support: Provides online support and video technical assistance for installation and usage.