Security fencing also known as spear top security fencing, crimped top security fencing, steel tubular fencing. Hebei ankai steel fencing co., ltd is a professional manufacturer of australian standard fencing products in china, supply a range of fencing products with high quality and competitivr price. Specifications of security fencing: Standard size of security fencing Dimension 2400x2100mm 2400x2100mm Verticals 25x25x1.2mm 25x25x1.6mm Rails 40x40x1.6mm 40x40x2.0mm Spacing 135mm centre 125mm centre Post 65x65x2.0mm 65x65x2.0mm Other specifications also available upon your request. Technology: verticals passing through top and bottom rails and welded to the rails by silicon bronze welding, 4 welds per vertical. Applications: car park fencing, railway fencing, school fencing... Feel free to contact me for more detail. 2400x2100