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What Is Welded Wire Reinforcement?

As defined by ASTM A1064, welded wire reinforcement is a material composed of cold-worked steel wire with indented or raised rib deformations. The wire itself is cold-drawn or cold-rolled from hot-rolled steel rod. The cold-working process includes reducing, deforming, and straightening. With final wire diameters produced, the wires are then automatically assembled and machine-welded to form mat-type structural reinforcement for concrete.
 
Welded wire reinforcement, historically called wire fabric, is produced in sheets and rolls, and is mainly used by the precast and cast-in-place concrete industries. Compared to standard methods of placing loose, individual pieces of steel reinforcing, welded wire reinforcement is an efficient, economical, and viable option for concrete reinforcement.
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How Welded Wire Reinforcement (WWR) Is Made

  1. Controlled-quality, hot-rolled smooth rods are cold-worked through a series of dies or cassettes to reduce the size, resulting in wires of project-specific diameter with higher yield strength.
  2. Wire intersections are electrically resistance-welded by automatic machines.
  3. Pressure and heat fuse the interacting wires together into a homogeneous section and into fixed position. No consumable electrode material is used in the welding process.
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Check out our informational resources for more in-depth information on welded wire reinforcement.
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The Benefits of WWR

  • Strong
    WWR is available in yield strengths up to 80 ksi
  • Fits Exact Size 
    Wires can be welded in various sizes and spacings, and pre-bent to suit
  • Versatile
    WWR can be used in a variety of industries
  • Wires in Position
    Welding into a mat makes sure wires stay in place

Watch our video to learn more about the basics of using welded wire reinforcement.