钢制拍门是各种材质拍门中的一种，是安装在排水管的末端，有止回阀，防止外部水回灌的作用。闸门主要由阀座、阀板、密土密封环和铰链四部分组成。形状分为圆形和方形。拍门材制传统上由各种金属制品制成，现已发展成为多种复合材料。
钢拍门主要安装在排水管的末端，以防止外部水倒出。该系列产品可分为不锈钢、铸铁、型材、复合材料(FRP)等多种材料。
球拍门有多种类型，如浮箱门、平翻门、套筒式翻板门等。
它是一个安装在排水管出口附近的单向阀。当河道潮位高于水管出口且压力大于管内压力时，挡门板自动关闭，防止潮水涌入排水管。目前，该门分为悬挂式、单门/双门、节能等多种材质。
钢拍门主要安装在排水管的末端，以防止外部水倒出。该系列产品可分为不锈钢、铸铁、型材、复合材料(FRP)等多种材料。
球拍门有多种类型，如浮箱门、平翻门、套筒式翻板门等。
它是一个安装在排水管出口附近的单向阀。当河道潮位高于水管出口且压力大于管内压力时，挡门板自动关闭，防止潮水涌入排水管。目前，该门分为悬挂式、单门/双门、节能等多种材质。
Steel flap door is one of various materials, is installed at the end of the drain pipe, with a check valve to prevent external water recharge. The gate is mainly composed of four parts: valve seat, valve plate, dense soil sealing ring and hinge. The shapes are divided into circles and squares. Racket door material is traditionally made of various metal products, and has now developed into a variety of composite materials. The steel flap gate is mainly installed at the end of the drain pipe to prevent the external water from pouring out. This series of products can be divided into stainless steel, cast iron, profile, composite material (FRP) and many other materials. There are many types of racket doors, such as floating box doors, flat flip doors, sleeve type flip doors, etc. It is a one-way valve installed near the outlet of the drain pipe. When the tidal level is higher than the outlet of the water pipe and the pressure is greater than the pressure in the pipe, the baffle plate closes automatically to prevent the tide from flowing into the drainage pipe. At present, the door is divided into suspension, single door / double door, energy saving and other materials. The steel flap gate is mainly installed at the end of the drain pipe to prevent the external water from pouring out. This series of products can be divided into stainless steel, cast iron, profile, composite material (FRP) and many other materials. There are many types of racket doors, such as floating box doors, flat flip doors, sleeve type flip doors, etc. It is a one-way valve installed near the outlet of the drain pipe. When the tidal level is higher than the outlet of the water pipe and the pressure is greater than the pressure in the pipe, the baffle plate closes automatically to prevent the tide from flowing into the drainage pipe. At present, the door is divided into suspension, single door / double door, energy saving and other materials.
