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ERW Pipe Manufacturering Process Straight seam high frequency welded pipe (ERW steel pipe ) is formed by forming a hot -rolled coil through a forming machine. The skin effect and proximity effect of high-frequency current are used to heat and melt the edge of the pipe blank.Hot Dip Galvanized Seamless and ERW (Welded)Pipes hot dip longitude welded erw carbon steel pipes tubesThe hot-dip galvanized steel pipe is formed with high quality welded tube and advanced galvanization technology and equipment, both inside and outside surface are smooth, without black spot or bleb. It features high corrosion resistance and is widely used as wire tubing under the poor condition.
ERW HOT DIP GALVANIZED STEEL PIPES . Hot Galvanized Steel pipe is a pipe that has been dipped into a molten zinc bath. The layer of zinc provides a protective boundary, permitting steel to be used in moderately corrosive services and outdoors services. Standards ASTM A106, ASTM 53, API 5L, JIS P2311 hot dip longitude welded erw carbon steel pipes tubes SHAPE round, square and rectangular.
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