ERW steel tube is manufactured through low or high frequency resistances Electric Resistance. Welding seam is in longitudinal. During the ERW tube welding processes, the electric current will make the heat when flow through the contact surface of the welding area. It will heat the two edges of the steel to a point that the edges can form a bond. Meanwhile with the combined pressure, the edge of the tube billet steel melted and extruded together.
Major applications
• Water pipelines
• Agriculture & irrigation (Water mains, industrial water pipe lines, plant piping, deep tube-wells & casing pipes, sewerage piping)
• Gas pipe lines
• LPG and other non-toxic gas lines
