Our stainless steel double layers pipe based sand control screens are very popular in Algeria. The screen pipes are double layers screens which are composed of the outer layer of wedge wire screen and the inner layer of perforated screen pipe. The screen pipe is made of stainless steel 304, 304L, 316, 316L, the wedge wire specifications are 0.75x1.5mm, 1x2mm, 1.5x2.5mm, 2x3mm, 2.3x4mm, 3x5mm, 3.5x6.5mm, 4x8mm, etc. Our stainless steel screen has high filtration efficiency and the slot is not easily blocked. https://www.nayushiye.com/products/well-screen-and-steel-casing/pipe--based--sand--control--screen.html