Wedge wire screen filter elements are made of stainless steel wedge wire screen. Filter rating is from 20 to 500 microns. Wedge wire screen is welded onto rods with stainless steel wedge wire at every contact point. They are classified into filter sheet, filter basket and filter elements. They have such characteristics as good strength, high ridity , resistance to abrasion and corrosion, even gap, good in filtration and fluidity, easy to clean and back wash.