Filter pipe is also called filter water pipe and bridge filter water pipe. It is made of low-alloy steel and processed by spot welding of dozens of support strips with trapezoidal cross-section of wrapped wire. There is high compressive strength, with high strength and stiffness, the average tensile strength of a single welded joint to 2000 N. The surface is smooth, the gap is even, not easy to plug the hole, and the filter is evenly sprayed in this filter to enhance the acid and alkali resistance of the filter, and to reduce the electrochemical reflection and biochemical reaction. After physical test and practical application, the temperature resistance can reach below 150℃, prevent alkaline material from forming scale in the filter, and greatly improve the service life, which is 3 times higher than that of lead wire and steel wire filter. Most of the filter pipes are used for oil wells, gas wells, water wells, but also for filters, food processing, manufacturing, chemical and other industries. Stainless steel fusion type filter pipe is composed of two parts: support bar and sieve bar, the support bar can be round wire or triangular wire or trapezoidal wire, and the sieve bar is triangular wire (v-shaped wire), with accurate gap size and high filtration precision; it has the characteristics of strong structure, high temperature resistance, corrosion resistance, good mechanical properties and long service life, and can be used for filtration of many kinds of media. Material: 302, 304, 304L, 316, 316L and other stainless steel wire Use: Filter tube is a kind of water filter material with holes, can be used with deep well pump, submersible pump, also can be used for water treatment equipment, environmental protection, seawater into industrial water and domestic water desalination treatment, tap water treatment, water softening treatment, petrochemical industry, the terminal filtration of petroleum products and chemical acid, alkali liquid filtration, alcohol and other organic solution recovery filtration, etc. Performance. 1、Continuous slits greatly increase the over-water area, so better contact with the aquifer. 2、The V-shaped profile structure avoids blockage and ensures smooth circulation. 3、Continuous pores can be used effectively for a long time. 4、The trapezoidal filtration water pipe has solid structure, high porosity and accurate gap size. 5、Trapezoidal filtration water pipe is easy to backwash, with long service life and low comprehensive cost. In addition to water intake, it can also prevent particles of soil or rock around the well wall from flowing into the well and silting up the well pipe, and at the same time, it also plays the role of supporting and protecting the well wall so that the pumping hole can be used normally. Some hard fissures, solution gap aquifer well wall stability and no loose fill, pumping water without the installation of the filter pipe, loose pore containing layer or broken bedrock aquifer, are required to install the applicable filter pipe. In agricultural water supply wells, cement gravel filter pipes are also commonly used, and the brick and wood walls of private wells actually play the role of water filtration and purification of water resources. At the same time, in large national projects, such as the South-North Water Transfer Project, the Olympic diving site - Water Cube, East-West Conveyance Project, etc., all need to use high-quality filter water pipes.