Galvanized concertina razor barbed wire

Concertina razor barbed wire is also named razor barbed wire, razor fencing wire, razor blade wire or dannert wire. It is a kind of modern security fencing materials with better protection and fencing strength made of hot-dipped galvanized steel sheets or stainless steel sheets. With sharp blades and strong core wire, razor wire has the features of secure fencing, easy installation, age resistance and other properties. 

Concertina razor barbed wire is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire (and/or razor wire/tape) and steel pickets, it is most often used to form military-style wire obstacles such as when used in prison barriers, detention camps or riot control.