IS 3988:1986 is the Indian Standard (BIS) for pvc coated chain link fence fabric - specification. This standard lays down the requirements for materials, dimensions, PVC coating thickness, and testing of PVC coated chain link fence fabric used for various fencing applications. It ensures the durability of fencing material by specifying galvanized core wires with adequate PVC jacketing.
Specifies requirements for PVC coated galvanized steel chain link fence fabric.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Core Wire Diameter | 2.50 mm, 2.80 mm, 3.15 mm | 3.76 mm (9 gauge), 3.05 mm (11 gauge) | ASTM F668-23 |
| Standard Mesh Size | 25, 40, 50, 75 mm | 25.4 mm (1 in), 50.8 mm (2 in) | ASTM F668-23 |
| Minimum PVC Coating Thickness | 0.40 mm (resulting in a 0.8 mm increase in total diameter) | 0.15 mm (for Class 2b, fused) or 0.38 mm (for Class 1, extruded) | ASTM F668-23 |
| Coating Adhesion Test | No cracking when wire is wrapped around a mandrel of its own diameter. | Coating shall not be peelable from the steel when a knife is used to attempt lifting it. | ASTM F668-23 |
| Breaking Strength of Fabric (50mm mesh) | Not explicitly defined for fabric, only for wire (ref IS 280). | 1290 lbf (5738 N) for 2-in. mesh, 9-gauge wire. | ASTM F668-23 |
| Core Wire Tensile Strength | Refers to IS 280 (350-500 MPa for soft grade). | Typically 400-550 MPa, but can be >750 MPa for high tensile. | BS EN 10223-6:2013 |