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Oil FilterThe oil filter pipe is appearanced of welded pipe. Seam is welded in straight line with unique spiral distribution formed by welding and greater filter strength. The center tube has high precision perforated tube with standard oil and glove tubes. The center tube reduces the opening area of the tube cross section and maintains the strength of the center tube to the maximum. The sand is blocked outside of the perforated screen while the oil, gas or water goes through the perforated opening then enters into the screen.
