A guide to the history of LSAW Steel Pipe

    LSAW, short for Longitudinal Submerged Arc Welded steel pipe, was invented in 1940.

    It adopt a new welding method, welding hand in front of it and the same place it is to protect the use of slag, but this residue is not a skin electrode medicine, is dedicated melting out of the welding flux.

    The welding system consists of a funnel drug loading of the welding flux through a pipeline to be welded to the front. The second difference is the use of welding, using wire, because the wire can be continuously sent; electrode, we gotta burn a welding electrode head and gave a throw, and the operation was suspended, ready for welding and then welding the weld seam.

    http://www.xysteelpipe.com/info/A-guide-to-the-history-of-LSAW-Steel-Pipe-741-1.htm

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