What is Electric resistance welded (ERW)?

Analysis of resistance welding technology applied to industrial piping systems

ERW (Electric Resistance Welded) resistance welding is an efficient steel pipe manufacturing process, which is widely used in industrial pipeline systems such as oil, natural gas, chemical industry, construction, and energy. Compared with seamless pipes, ERW pipes have the characteristics of high manufacturing efficiency, good dimensional accuracy, and obvious cost advantages. They have become one of the important choices for large-scale industrial pipes.

ERW process principle

ERW pipes are made by rolling steel strips (or steel plates) into a cylindrical shape, and then using resistance heat to heat both sides of the steel strip to a plastic state, and applying pressure with the help of extrusion rollers to achieve edge fusion and form a weld. The whole process does not require the addition of filler metal, and the weld zone has uniform organization and stable performance.

Advantages of ERW pipes

First, it has high production efficiency, is suitable for mass production of standard specification pipes, has fast welding speed, and short delivery cycle.

Second, it has high dimensional accuracy, uniform pipe wall thickness, and smooth inner and outer surfaces, which is conducive to improving fluid transmission efficiency.

Third, it has excellent cost control, high material utilization, low manufacturing energy consumption, and outstanding cost performance.

Application scenarios

ERW pipes are commonly used for low and medium pressure fluid transportation, such as oil, gas, and water supply pipelines. They are also widely used in structural pipes, mechanical processing pipes, and other fields. In special occasions with high requirements for welding performance and pressure resistance, ERW products manufactured to high standards need to be selected.

With advanced manufacturing technology and strict selection of high-quality raw materials, MTSCO is committed to providing high-reliability and high-consistency industrial pipeline solutions to customers in the global petroleum, chemical, energy and other industries to meet the needs of complex working conditions and help the system achieve safe, efficient, and long-term stable operation. If you have any product needs or project consultations, please feel free to contact us. MTSCO will provide you with high-quality and high-reliability pipeline system solutions to help your project advance efficiently.