V shape wires from SST, titanium, etc. Rigid & very strong construction that will not flex or give to backwash force. Only two point particle contact. Very high consistency. Ideal for fibrous material. The slots will not shift or change over time. Good working pressure and bursting pressure. Application: The products is applied for the protection of down hole equipment as well as the surface surely smooth production and extension of producing cycle of oil, gas and water wells by means of gravel pad to control the formation sands. Its sand-control tools used to hold relatively leading position in oil industry simple process, good permeability temperature resistant, long life reliable safely and low costs.