... pattern4. Excellent corrosion-resisting5. Easy for installation, less work timeSpiral Welded Pipe Perforated seam is welded in straight line ... filter glove is made of 304 stainless steel materials. For wells containing H2S, CO2, high-Cl that has special requirements ... can be used for vertical wells, the inclined shaft, horizontal wells and various gas, oil and water wells. Can be used individually as ...