Our Barbed wire have four common twist types: single twist barbed wire, double twist barbed wire , traditional twist barbed wire, and PVC coated barbed wire. Barbed wire includes line wire and barbed wire. In general, the wire diameter of line wire is larger than that of barbed wire. The barbed wire twist types depends on the twist type of line wire and barb wire. And the line wire sometime is single wire, sometimes is double wire.