Difference Between ERW Pipe and Welded Pipe

Do You Know About the Difference Between ERW Pipe and Welded Steel Pipe？

 

ERW Steel Pipe (Also Called Electric Resistance Welded Pipe) and Welded Steel Pipe are often argued. Generally, compared with ERW Pipe, the manufacturing process of Welded Steel Pipe is much simpler. However, this does not necessarily mean that Electric Resistance Welded Pipe is better, and your choice will depend on the purpose and application type of pipeline materials. Electric Residence Welded Pipe and Welded Steel Pipe have some differences in production methods, strength levels, corrosion resistance, cost benefits, and available dimensions. When choosing the most suitable materials for any construction or industrial project, please consider these factors. Continue reading and understanding more information.

 

Production Methods of ERW Pipe and Welded Pipe

 

As mentioned earlier, ERW represents resistance welding. Resistance welding has the characteristics of high production efficiency, low cost, saving materials, and easy automation. Therefore, it is widely used in industrial departments such as energy, electronics, automobiles, and light industry. Essence On the other hand, Electric Resistance Welded Pipe is produced by ERW or electronic resistance welding methods. In this process, steel plates or steel belts or metals are rolled continuously until cylindrical. In order to connect the two ends, the current is passed to both ends, which generates heat and melts the edges of the material and combines it. Although ERW PIPE involves welding, the current on ERW PIPE does not require welding filler. This greatly eliminates the defects on finished steel and reduced post -treatment.

 

Ordinary Welded Steel PIPE production technology is simple, high production efficiency, low cost, and rapid development. Generally, welded pipes are used to transport low -voltage flow. Made with Q195A, Q215A, Q235A steel. It can also be made of other soft steels that are easy to weld. Steel pipes should conduct experiments such as water pressure, bending, and flattening, and have certain requirements for the surface quality. Usually the delivery length is 4-10m, and the fixed ruler (or multiple ruler) is often required. The specifications of the welded pipe are expressed in the nominal caliber (millimeter or inch). The nominal caliber is different from the actual. The welded pipe has two types: ordinary steel pipes and thick steel pipes according to the regulations. The steel pipe is divided into two types: threaded and without thread according to the prescribed wall.

 

Corrosion Resistance About Two Types Of Steel Pipe

 

ERW PIPE and Welded Steel Pipe can be anticorrosive through a pipe. One way is to soak galvanized, soak the sample or metal into a melting zinc bath. During the cooling process, zinc reaches a gold treatment with the metal or alloy surface, and forms a layer of corrosion -resistant layer on the material. However, because the surface of the seamless pipe is uniform, galvanizing is more practical. Thermal dipping galvanized is suitable for these pipes because it is not possible to affect welding marks of zinc coating and metal adhesion.

 

Even if Electric Residentance Welded Pipe is galvanized, it cannot guarantee that it will not be formed over time. The combination of environmental and chemical factors may cause the welding joint to eventually react and cause sediments, thereby reducing the quality of welding and galvanizing with ERW PIPE. The seamless pipes of galvanized pipes will eventually have a better service life. When you want to give priority to the low cost maintenance and minimum maintenance of pipeline materials, please consider this.

 

Summarize

 

When you do not understand the main difference between ERW steel pipe and ordinary Welded Steel pipe, it may be difficult to choose between the two. Although both are applicable to different pipeline applications, the quality of Electric Resistance Welded PIPE is higher. It is used to transport oil and natural gas such as oil and gas. Get a pivotal position. If you are looking for high -end imported Electric Resistance Welded Pipe, we provide choices for all your STEEL PIPE needs. Click to learn more! You can also view more information.