steel fiber 0.5-1.2mm,20kg/bag ISO9001:2000 certificate ... 0.5mm-1.2mm2.Length: 30mm-60mm3.Material: low carbon steel wire4.Feature: excellent tensile,high tenacity,against cracking,impact and ... : high way,tunnel,building,airport road serface and so on . Steel Fiber :SizeDiameter (mm)Length (mm)Proportion (mm) Tensile strength ( ... 63050≥1000SD0.6-250.62542≥1000SD0.5-250.52550≥1000 Steel Fiber for concrete