Sliding gate, that is, the door edge beam set the slider as a support structure, along the door groove buried track sliding flat gate. This gate is often used as a service gate and is rarely used as a working gate. The materials of the slider are: hardwood, copper plate, cast iron, steel, stainless steel plate, pressed glue wood, filled teflon plate, filled nylon and steel-based copper-plastic composite plate, etc. The slider material is selected based on the small pressure of water on the unit length of the slider and its frictional properties. The last 4 kinds of materials are processed to meet the physical and mechanical performance requirements, with the profit size embedded into the steel groove, and then processed to achieve the specified precision, with bolts to connect the steel clamp groove slot with the side bar into a slider.