electronic resistance welded black square steel tube

electronic resistance welded black square steel tube

electronic resistance welded black square steel tube

 Thickness:1-120mm
 Width:1500-3600mm
 Length:as custom's request
 Technique:Cold rolled or hot rolled
 Surface treatment:Bare/Shot Blasted and Spray Paint or as required.
 Standard:ASTM,EN,GB,JIS,DIN

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The first stages of manufacturing are identical to ones used to make electric resistance welded tube, but in the finishing stages the entire flash weld is removed and the tube is cold drawn over a mandrel.

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Electric resistance welding - Wikipedia

Electric resistance welded (ERW) pipe is manufactured by cold-forming a sheet of steel into a cylindrical shape. Current is then passed between the two edges of the steel to heat the steel to a point at which the edges are forced together to form a bond without the use of welding filler material.Spot welding·

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Webco is North America's leading manufacturer of precision welded tubing for pressure, driveline, downhole and industrial applications. ERW (Electric Resistant Welding), Laser and TIG (Tungsten Inert Gas) welding technologies are appropriately employed in helping WEBCO offer a wide range of welded tubular products to meet multiple market requirements.

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