ERW steel pipe is welded by high frequency welding certain size strip steel rolled into a round tube and straight seam welded steel pipe. ERW Longitudinal shape can be round - Longitudinal tube, it can be square - Rectangular shaped tube or the - shaped steel tubing, it depends on the sizing rolling after welding.ERW straight seam high frequency welded steel pipe is used for: it has a relatively simple process, the characteristics of rapid continuous production, in civil construction, petrochemical, light industry and other sectors is widely used. Used for conveying low-pressure fluid or made into a variety of engineering components and light industrial products.ERW pipe is "high-frequency resistance welded steel pipe," and not the same as an ordinary pipe welding, weld steel body is made of base metal melting, good mechanical strength than pipe.ERW said resistance welding, resistance welding with high efficiency, low cost, material saving, easy automation features, it is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors, is an important process of welding one.
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