This is bob from haixing wedge wire company.We are a manufacturer of pipe base stainless steel 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.Please tell us your demand and then we design , manufacture for you.Yours faithfully bob.