... -90 standard and JG/T3064-1999. Flat crimped steel fiber, Concrete tensile strength exceeds 700Mpa. Flat crimped steel fiber ,.Diameter: 2.3-2.7mmTensile strength: ... engineering, railway etc ,concrete tensile strength with our xorex steel fiber exceeds 700mpa, compared with common concrete, compression strength increases ... 6 times, wearability and frost resistance also improves greatly. Steel fiber