Difference Between ERW and Seamless Tubes

 

Stainless steel products are widely used in numerous industries and applications due to their superior features and properties. Steel pipes are everywhere. Pipes can be manufactured for a variety of applications. ERW and seamless tubes are quite famous among them. The difference in the basic manufacturing method is obvious from the name.

There are basically two types of pipes and they are manufactured differently. There are seamless steel pipes starting with a solid circle, heated to almost melting point, then drilled through the centre with a tool to make a pipe. This is known as "Hot Finish Seamless Pipe".

The second most popular variety known as ERW tubes or “electric resistance welded” pipe begins with a reel or cuts width steel coil known as “Skelp”. The Skelp is steered through a series of rollers that make it round, and when the edges are brought together, an electric welder creates a longitudinal seam down the length of the pipe. Let's take a look at the differences between Seamless and ERW, which can make a big difference in application and operational economics.

Manufacture process

In seamless tubes, they heat the round steel billet and push it over the piercing rod until it is hollow. As a result, the length and thickness are controlled through extrusion technology. It is a completely different story for electrical resistance welded tubes tube production. The coil is bent in the axial direction and the converging edges are welded over the entire length by electric resistance welding.

Raw Material Used

ERW tube billet is made of hot rolled steel sheets of the cold rolling process, and a seamless pipe tube billet is produced under hot rolling conditions. The situation in which seamless pipe tube billets are produced negatively affects the particle size, resulting in poor performance.

Basic Difference Between ERW and Seamless Tubes

ERW tubes are used worldwide for the delivery of liquids such as fuel, gas, etc., regardless of the requirements of pressure, which plays an important role in conveying tubes. Seamless tube has a hollow cross-section, which is used to transport liquids but is used to make structural members and mechanical parts due to its surprisingly high anti-bending and anti-bending properties.

Now you are confident that you have understood the difference between electrical resistance welded tubes and seamless stainless steel pipe. It is advised to go with Dewas Metal Sections Limited as they offer varieties of ERW tubes engineering, furniture, storage industries, automobiles and so on. Besides common market tubes, they are specialized in providing specially designed and critical welded profiles at an affordable cost.