Installation specification requirements for concertina-shaped barbed wire cages in prisons

The installation specification requirements of prison concertina-shaped barbed wire cages: The razor wire design has the functions of being difficult to cut and anti-climbing. Can be very effective in preventing criminals from absconding. (1) The prison concertina-shaped barbed wire rolling cage is wound with a razor-barbed rope, and the adjacent two circles are fixed with barbed-wire connecting cards every 120°. After opening, a concertina-shaped net is formed. After closing, the diameter of the razor-barbed rope circle is 50cm, the installation distance of each cross circle after opening is 20cm, and the diameter is not less than 45cm. (2) The prison bellows-shaped barbed wire cage is formed by punching steel plates on steel wires by mechanical rolling. The width of the blades is 22mm, the vertical distance between the two blades is 15mm, the vertical distance between the blades is 34mm, and the diameter is 2.5mm. The blade is punched from a steel plate with a thickness of 0.5mm. (3) The prison bellows-shaped barbed wire cage is connected by the barbed wire connecting buckle to the longitudinal tie bar fixed on the bracket. The connection between the longitudinal tie bar and the bracket is made of a φ2.5mm galvanized steel wire wound twice and then tightened and fixed. , the bracket is set on the column and mid-span position of the protective fence with a span of 3m, and the other spans are only set on the upper part of the column, and the bracket and the protective fence are connected by bracket hoops. (4) The vertical distance between the lower edge of the prison concertina-shaped barbed wire cage and the upper edge of the reinforced concrete protective fence is 0.05m.