ERW piping or Electric Resistance Welded Stainless Steel Pipe Material are used for many different applications, as it is the most readily available and economical type of mechanical tubing. There are two different types or processes to create ERW tubing. You have, CREW or Cold Rolled ERW and you have HREW or Hot Rolled ERW. With each type of Electric Resistance Welded Stainless Steel Pipe Material, there are different steps that go into creating the tubing, as well as different uses for each ERW tubing after it is created.

ERW Stainless Steel Pipe Material initially starts out as a flat pieces of steel, and then rolled into a tube shape. Without overlapping, the seam is then welded using a process called "Electric Resistance". You may now understand where ERW tubing gets its name! During the process of creating ERW tubing, the piping may either be hot rolled or cold rolled, which has a drastic change on the outcome of electric resistance piping. Also created from the electric resistance welding process is DOM tubing.

Finned Tube

A popular tube configuration for heat exchangers is a finned tube. By welding small pieces of metal or "fins" to the OD of the heat exchanger tubing, the total surface area of the tubes can be increased. This increased surface area increases the ability of the tube to transfer heat from the media inside the tubing to the atmosphere. Fins are available attached in a helical or longitudinal pattern. Fin materials can include carbon steel; stainless steels of types 304, 310, 316, 321, 409, and 410; Nickel 200, and Inconel, and can be solid or serrated.