I'm Joanna sun from China hengshui guangxing screen Co.ltd 

wedge wire anti-sand filter screen pipe (manufacturer)

1.V shape slot ,non-clogging

2.large open area 

3.long life

wedge wire anti-sand filter screen pipe (manufacturer)

This product is manufactured by a "V" or wedge shaped wire around an internal array of longitudinal support rods. Each intersecting point of these wires is fusion welded. The "V" or wedge shaped profile wire wraps around 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.

Water enters at lower velocity, reducing screen surface erosion and encrustation. Designed and constructed to 1" to 26" diameters, operating under different depth conditions, with the optimum strength/open area ratio. Slot openings from 0.10 mm (0.004") up. Lengths up to 6 meters. Welding-ring or threaded ends. Standard designs for installation depths of 100, 200, 350 and 600 meters.