straight razor wire we can produce razor type barbed wire in straight lines of various blade types (as listed below). special specifications for straight type razor wire are available on request. standard materials for razor type barbed wire are either galvanized or stainless steel. concertina single coil we can produce concertina coils of razor wire in single coils or crossed coils. different blade types available for your choice. special specifications for concertina coils or straight type razor wire are available on request. standard materials for razor type barbed wire are either galvanized or stainless steel. crossed concertina coils as professional manufacturer of barbed wire series fencing products, we can produce traditional barbed wire, razor wire in straight lines, razor wire in concertina single coils or crossed coils. a variety of blade type and sizes are for the choice of our customers. standard materials for razor type barbed wire are either galvanized or stainless steel.