This is bob from haixing wedge wire company.We are a manufacturer of pipe base screen in china.The base pipe, casing or tubing, is selected to API specifications by size, grade and weight for each of your required applications.Our slip-on type of pipe base screen is manufactured from two components: the base pipe and the slip-on screen.The base pipe will be perforated with a series of holes drilled to a pre-determined quantity and pattern, to carefully balance flow-capacity at each end for both down-hole handling.The holes are then debarred and the joint cleaned, inspected and treated to give the base pipe a long shelf life.Our slip-on screens are manufactured to very exact diameter, length gauge and strength tolerances. This is done by selecting the required profile wire and support rod, which determine the flow-capacity and strength of the slip-on screen. For each gauge opening in the screen we select a slightly greater than that of the perforated base pipe. This will give the pipe base screen optimum flow-capacity at minimum pressure drop across the screen.If you have any enquiry of pipe base screen , please feel free to contact us.