ERW tube

2009-02-27View Original

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What kind of tube is an ERW tube? I only know that SSAW is spiral seam submerged arc welded steel pipe and LSAW is straight seam submerged arc welded steel pipe.

Reply #22009-02-27

The second floor is right, ERW is resistance welded steel pipe, which is commonly used for pipeline welding. 　　Resistance welding is a method in which the workpiece to be welded is pressed between two electrodes and an electric current is applied. The resistance heating effect generated by the current flowing through the contact surface and adjacent areas of the workpiece is used to heat it to a molten or plastic state to form a metal bond. 　　There are four main resistance welding methods, namely spot welding, seam welding, projection welding, and butt welding.

Reply #32009-02-27

　Electric resistance welding and capacitor welding EFW electric fusion welding

Reply #42009-02-27

Electric resistance welding (ERW for short)

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ERW tube

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