Lifting column, also known as lift to column, lifting the bollard, anti-collision bollard, hydraulic lifting column, lifting roadblocks, isolation and other pedestrian pile lifting column, the cell automatically lifting column, highway emergency automatic lifting fixed bollard at the top of the column geometry design effort, curved top, flat top, top of the slope, circular top variety of styles. Each is a classic: arc: extending the distance and gently falling. Flat Top: vast and open slopes: clear, strong round: Mastery without problems, smooth and slick, the ancient Egyptians believed that God gave mankind circle is sacred graphics. Fixed bollard though not lift can not move, but for the plaza around the permanence of vehicle control is the most appropriate, and in some commercial plaza surrounding the need to stop the vehicle but also without prejudice to the pedestrian, fixed bollard both to meet this demand has been added the convergence of the square and the surrounding environment. Column size and spacing of the bollard style layout visually well-preserved open nature of the square. For a sense of permeability space can be used "if you see it there, if you ignore it nor" to describe. Fixed bollard selection on 304 for the last election, because it presents a very good corrosion resistance in the atmosphere and acid, alkali, salt and other medium and long-term does not rust in outdoor environments without distortion. Fixed bollard from the installation is divided into embedded type and surface type: Embedded-type fixed bollard 100mm or more extension will remain in the ground, so the installation of a fixed bollard more robust and anti-impact force is also slightly better. Surface-mounted fixed bollard are no underground extension, with the case of attachment fixed on the ground, already finished pouring and laying on the ground using direct this fixed bollard more appropriate. When the installation of a fixed bollard accessories are all made of stainless steel, thus avoiding the attachment rust caused by road pile displacement or dumping. Cylindrical shape fixed bollard there are many: round, square, tapered, triangular, trapezoidal, olive, etc ... .. These shapes are being used with considerable road pile-style building, carefully designed total can be fused together.