Welded wire mesh is a method of reinforcing concrete using a mesh of high tensile steel bars which are resistance welded together. The bars used can be smooth, deformed or ribbed and are welded together using pressure and a high electrical current. The mesh is used as a substitution for the conventional method of reinforcement using loose bars tied together which is both time consuming and inaccurate.

TYPICAL FEATURES OF A STEEL FABRIC

The welded fabric is characterised by the bar diameter; the main and cross one respectively, as well as by the mesh size area per metre width. In a welded wire fabric the main bars are distinguished from the cross ones. They can be as follows:

a.	single ie formed by one round wire only.
b.	double ie formed by two round wires of the same diameter which are closely joined to each other (the distance between them being roughly equal to zero). The concrete reinforcement meshes of double or twin bars are obviously provided with a double bar in the length direction only.

MANUFACTURING

Our flexible production capability enable us to manufacture engineered sheets to required specific requirements. Our manufacturing parameters are as under:

If your requirements calls for production outside the above parameters, please contact us.

QUALITY COUNTS

The steel rods used in the manufacture of wire mesh must fully comply with the physical and chemical requirements of various international standards. To ensure this is the case our factory is equipped with sophisticated testing equipment with which we carry out stringent quality checks. At regular intervals we also employ a third party testing agency to carry out the same checks and ensure the materials comply with the relevant standards.

BRITISH STANDARD
BS 4483 Steel Fabric for Reinforcement of Concrete

Tests include:

0.2% Proof Stress	Minimum 485 N/mm2
Ultimate Stress	1) Normally 10% above proof stress 2) Can be between 5% and 10% under certain conditions.

GERMAN STANDARD
DIN 488 Welded Reinforcing Steel Fabrics to BST 50/55 RK.

This requires steel to have

A yield point of	50Kg/mm2 (500 N/mm2)
Tensile Strength of	55 Kg/mm2 (550 N/mm2)
An Elongation of	8%
A specified ribbing pattern

The above tensile requirements exceed those generally used for high tensile bar reinforcement. Thus sheets of our engineered mesh reinforcement may be used in place of bar reinforcement. Use of our ribbed mesh will also increase the bond characteristic of steel (by approx. 40% higher than plain bar reinforcement.)