ERW Pipe Manufacturing

- Mar 10, 2018 -

A process for producing welded tubes is Electric Resistance Welding (ERW) also known as Contact Welding. The manufacturing starts by cold-forming a coiled plate of steel with eligible thickness and certain width into a cylindrical shape. As the cylindrical plates come together, an electric current using heat merges the edges together to create the final product.

EFW pipe manufacturing

Processing of Electric Fusion Welding, also called Continuous Welding begins as coiled steel with appropriate thickness, width and weight is made. To form a continuous ribbon of steel several coils are welded together. Then the steel ribbon is heated to the necessary temperature and formed into an oval. In the next step the edges of the tube strip are permanently pressed together by rolls in order to receive a forged weld. In the last stage sizing rolls convert the welded tube into specific dimensions.

DSAW pipe manufacturing

The process of producing Double Submerged Arc Welded Pipes first contains forming steel plates into cylindrical shapes. Later on the edges of the rolled plate are forged so that v-shaped notches are on the exterior and interior area of the seam. Then the pipe seam is being welded by an arc welder submerged under flux.


Previous: Energy Saving And Environmental Protection For Seamless Pipe Manufactures In China Next: Welded Pipe Manufacturing

Related News

Related Products