Crimped Steel Fiber Is to Control Plastic Shrinkage & Drying Shrinkage

A pile of corrugated steel fibers.

Round crimped steel fibers is ideal to used in building construction in various kinds of places.

Round crimped steel fiber is fabricated by cold-drawn low carbon steel. Compared with rebar, round crimped steel fiber adds pull-out resistance. Round crimped steel fibers are deffer from other five types in shape but sharing the same functions. Round crimped steel fibers are designed to improve structural strength and durability, and also resistant to cracking and plastic shrinkage and drying shrinkage.

The characteristics of round crimped steel fiber changes with varying conditions, for example concrete, geometries, distribution, orientation and densities.


  • Improve structural strength.
  • Reduce bleeding of water.
  • Resistance to cracking.
  • Improve freeze-thaw resistance.
  • Improve impact– and abrasion–resistance.
  • High tensile strength and good durability.


  • Material
    Cold-draw low carbon steel wire.
  • Standard
    EN 4889, ASTM A820/A820M.
  • Diameter
    0.9 mm, 1 mm, 1.3 mm.
  • Aspect ratio (l/d)
    39, 50, 60.
  • Tensile strength (MPa)
    ≥ 900, 1150, 1200, 1500.
  • Package
    Packaged in cardboard boxes (Net weight/box: 25 Kg).
Round Crimped Steel Fiber Specification
Item Diameter (mm) Fiber length (mm) Wave depth (mm) Wave length (mm) Aspect ratio (l/d) Tensile strength (MPa) Number of fibers per kg Total fiber length/10 kg (m)
RC39/35BN 0.9 35 0.4–0.65 8.0 39 ≥ 1200 5500 1925
RC50/50BN 1.0 50 0.4–0.65 8.0 50 ≥ 1150 3100 1550
RC60/60BN 1.0 60 0.4–0.65 8.0 60 ≥ 1500 2500 1550
RC39/50BN 1.3 50 0.4–0.65 8.0 39 ≥ 900 1850 910


  • Sprayed concrete.
  • Flooring pavement.
  • Precast.
  • Situ and repair concretes.
  • Low cement castable.
  • Tunnel project.
  • Burner blocks.
  • Blast furnace.
A new wall was built on the two sides of old wall.

Steel fiber used in wall construction

A broken concrete slab with amount of steel fiber.

Round crimped steel fiber used in concrete

A broken concrete slab with steel fiber inside.

Crimped steel fiber used in floor pavement

Adding steel fiber to concrete by using automatically concrete mixer.

Mix up cement with crimped steel fiber

Round crimped steel fibers are in hardened concrete slab.

Crimped steel fibers in hardened concrete

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