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2.How to produce Electrical Resistance Weld Pipe-ERW?
What is ERW pipe?
Electric resistance welding (ERW) is a welding process in which metal parts in contact are permanently joined by heating them with an electric current, melting the metal at the joint.
Electric resistance welding is widely used, for example, in manufacture of steel pipe and in assembly of bodies for automobiles.
ERW steel pipe is a straight seam welded pipe manufactured by high frequency resistance welding process. Its raw material is usually hot rolled coil. This manufacturing method enables ERW steel pipe to have more precise outer diameter control and wall thickness tolerance.
Key Features:
Material: High-quality carbon steel or low-alloy steel is selected to ensure excellent mechanical properties.
Production Process: The edges of the tube billet are heated to welding temperature using resistance heat generated by high-frequency current, and then pressure is applied to complete the weld, eliminating the need for filler metal.
Specifications: Outer diameters range from 1/2" to 24" with customizable wall thickness.
Surface Treatment: A variety of surface treatments are available, including black coating, galvanizing, and painting, for enhanced corrosion resistance.
Applications: Suitable for construction, bridge construction, oil and gas transportation, water supply and drainage systems, and more.
