... )Its length:25mm,30mm,35mm,38mm,40mm,50mmStrength of strain resistance:800---880Mpa3)Usage:Blending the fiber and concrete in a ... certain ratio.It will much strengthen crack resistance,repture resistance and fatigue resistance.It is wideny used in highway,bridge,tunnel ... construction of tallbuilding,as well as furnace of shock resistance and high temperature.4)Chemical property:C 0.07---0.12% Mn ...