UADONG wedge wire water well screen are manufactured by a v or wedge shaped wire around an internal array of longitudinal support rods. Each intersecting point of these wire is fusion welded. The v or wedge shaped profile wire wraps around the support rods over the full length of the screen creating a continuous slot opening, hence the screen allows water(oil) to enter your well freely in ample quantities , while at the same time keeps the majority of sand and gravel out of the well. Contact: Katie Zhang sales01@chinawellscreen.com