Welded Wire Mesh consists of a series of parallel
longitudinal wires with accurate spacing welded to cross wires at the required
spacing. The welding of the wires is achieved by electric resistance welding
with solid-state electronic control and all the spacing are controlled by an
automatic mechanism of high reliability. There is no foreign metal added at the
joint and the intersecting wires are actually fused into a homogeneous section
thereby ensuring permanency of spacing and alignment in either direction.
The wires used in the fabric are cold drawn from
controlled quality mild steel wire rods with carbon content generally less than
0.15%. The cold drawing through a series of tungsten carbide dies results in a
high tensile strength and increased yield strength material of accurate
dimensions. Further, each section of the wire gets inherently tested by the
process itself for its characteristic physical properties thereby offering a
systematic reliability of material. The cold drawing operation unlike the cold
twisting used in HYSD bars also doesn’t sacrifice the ductility of the material
in any major way. The wires conform to IS: 432-Pt II/1982 which specifies an
ultimate tensile strength of 570 N/mm2 and a characteristic strength of 480
N/mm2. Wires used for manufacture of fabric are generally manufactured in the
range of 2 mm to 12mm diameter.
