... Tolerance + 1/2" ). Barbed WireMaterials:galvanized steel wire, PVC coated iron wire in blue, green, yellow and other colors ... in protecting of grass boundary, railway, highway, etc. PVC Coated Barbed WireCore Wire:electro-galvanized iron wire,hot- ... the atmosphere. Its high resistance allows greater spacing between the fencing posts.Suitable for industry, agriculture, animal husbandry, dwelling house, ...