The perforated basepipe can be API Casing J55 K55 N80 L80 P110 and Stainless Steel 304 304L 316L. All the components can be with stainless steel materials too. The nos of drainage layer and filtering layer are decided by the filtering requirement and cost evaluation. The filtration effect depends on the filtering layer especially of the metal mesh size. The outer protective shroud can be with bridge slot or round holes, which show different flow area. The finished metal mesh screens are with very good filtration function and create the robust construction and excellent mechanical performance.