... , four-wire Barbed Iron Wire is most common. The upper strands of Barbed Iron Wire can be ... removed if the fence is meant to contain hogs. Barbed Iron Wire ... in and wreaking havoc. Wire Materials: Galvanized steel wire, PVC coated iron wire in blue, green, ... boundary, railway, highway, etc.Specifications Barbed Wire SpecificationTypeWire Gauge (SWG)Barb Distance (cm)Barb ...