ThePipingMart Blog other ERW vs MS Pipes – What’s the Difference

ERW vs MS Pipes – What’s the Difference

ERW vs MS Pipes

Pipes are essential materials in any construction project, and there are various types to choose from. Two of the most popular are the ERW and MS pipes, each with specific characteristics and uses. This blog post discusses the differences between ERW and MS pipes to help you choose the best one for your project.

Difference Between ERW and MS Pipes

Chemical Composition

One of the primary differences between ERW and MS pipes is their chemical composition. ERW pipes are made of low-carbon steel, while MS pipes are made of medium-carbon steel. This difference in design gives each type of pipe different properties that make them suitable for other applications.

Manufacturing Process

The manufacturing process is the primary difference between the ERW and MS pipes. ERW pipes are made from hot-rolled steel coils and are formed through electrical resistance welding. On the other hand, MS pipes are made from mild steel and are formed by rolling the steel to its required thickness and then welding the seams.

Strength and Durability

ERW pipes are more robust than MS pipes and can withstand more significant pressure. ERW pipes are made by electric resistance welding, making them more corrosion-resistant. MS pipes are durable too, but less than ERW pipes. They are better suited for moderate to low-pressure applications than high-pressure situations.

Cost and Availability

MS pipes are more affordable than ERW pipes. The reason is that MS pipes are more common, easy to manufacture, and readily available. Therefore, they are used primarily on construction projects that do not require high pressure or temperature. ERW pipes, on the other hand, are more expensive due to the advanced manufacturing process and high corrosion resistance.


Depending on their characteristics and factors, ERW and MS pipes are used in different applications. ERW pipes are commonly used in applications requiring higher protection against corrosion, such as water and gas pipelines. MS pipes, on the other hand, are more suitable for relatively low-pressure applications such as water supply, scaffolding, and structural works.

Welding Quality

ERW pipes have a smooth and consistent surface, while MS pipes have welded joints that may not be even and uniform. These joining points may cause a weak point in the tube, affecting its durability and resistance.


As we have seen, ERW and MS pipes have unique characteristics, making them suitable for specific applications. It’s essential to consider the application of a line before choosing the right one. By knowing the differences between ERW and MS pipes, you can make informed decisions that will help you improve the quality and reduce the cost of your construction project.

Related Post