Concertina Wire Manufacturer, Suppliers in Delhi, Concertina Wire in Delhi, Concertina Wire at Best Price in Delhi. Concertina Wire is normal designed round in shape for its security purposed, and in a form of a spring, It is made up of spirals which can be stretched to form a Dense Barrier only if it is made up of high Tensile Wire a the Coil Should have standard 50 Spirals.