Application and Advantages of ERW Steel Pipe
What is ERW Steel Pipe?
ERW steel pipe (Electric Resistance Welded, resistance welded steel pipe) is a steel pipe made by longitudinally welding steel coils. Its manufacturing process involves using resistance to generate heat to melt the edges of the steel and weld the steel strips into a tube. ERW steel pipes are widely used in many industries due to their fast manufacturing process, low cost and strong structure, especially for small diameter steel pipes produced in large quantities. During manufacturing, the steel strip is rolled into a cylindrical shape, and then pressure and current are applied to the steel edges to finally fuse them into shape.
Main characteristics of ERW steel pipes
ERW steel pipes have excellent strength, corrosion resistance and high ductility under specific manufacturing processes. Its specific characteristics include:
High strength and corrosion resistance: ERW steel pipes can maintain good performance in high temperature and high pressure environments, have corrosion resistance, and ensure long-term stability and reliability of the pipeline when conveying fluids such as oil, gas or water.
Excellent strength and ductility: In structural support or conveying systems, ERW pipes are not only strong, but also have good ductility, which can adapt to various installation requirements.
High production efficiency: ERW welding technology is more economical and efficient than other welding methods, especially suitable for mass production of small-diameter steel pipes.
Various sizes and thicknesses: According to application requirements, ERW pipes can be customized in different sizes and thicknesses to meet the different needs of various industries for pipes.
Production process of ERW steel pipes
The production process of ERW steel pipes is divided into two forms: AC welding and DC welding. AC welding is divided into several types according to frequency, such as low frequency, medium frequency, ultra-medium frequency and high frequency welding:
High frequency welding: usually used to produce thin-walled or ordinary-walled steel pipes, which is the most common ERW welding process. High frequency welding includes contact welding and induction welding, which can achieve continuous high-speed production.
DC welding: mostly used in the manufacture of small-diameter steel pipes, with stable process, suitable for the production of small-diameter ERW pipes with thin wall thickness.
ERW steel pipes are divided into small-diameter and medium-diameter pipes. The outer diameter range of small-diameter is 60219 mm, which is suitable for water transportation, building structures and fluid transportation. The outer diameter of the medium diameter ranges from 219660 mm, which is suitable for oil and gas transportation, urban pipeline networks and high-pressure fluid transportation.
Wide application of ERW steel pipes
ERW steel pipes are widely used in many industries. Its advantages are not only high strength and durability, but also its low cost and easy processing. The following are the main application scenarios of ERW steel pipes in various fields:
1. Oil and gas industry
ERW steel pipes are widely used in fluid transportation systems in the oil and gas industry. Its sturdy structure enables it to withstand high temperature and high pressure conditions during oil and gas transportation. The smooth inner wall facilitates fluid flow, prevents loss caused by fluid friction, and effectively prevents leakage. In addition, ERW pipes are also applicable in water supply stations, drainage systems and other liquid transportation systems, and are a reliable pipeline choice for the oil and gas industry.
2. Construction industry
Due to its reasonable price and high strength, ERW steel pipes are widely used in water supply and drainage systems, natural gas pipelines and structural support columns in the construction industry. The construction industry often uses ERW steel pipes to construct infrastructure such as building frames, guardrails, scaffolding, etc. Its reliable load-bearing capacity and durability make it an ideal material for construction projects.
3. Mining Industry
In the mining industry, ERW steel pipes are often used in transportation systems for ore and other materials, such as pipelines, conveyor belt brackets and structural supports. The high strength and durability of ERW steel pipes are particularly important in the mining industry, where they can work for a long time in harsh environments. In addition, the water supply and drainage systems used in mining operations also rely on the excellent performance of ERW pipes.
4. Automobile Industry
In the automotive industry, ERW steel pipes are used in exhaust systems and are resistant to high temperatures and corrosion. In addition, in order to increase the service life, galvanized ERW steel pipes are often selected as the material of the exhaust system for components such as mufflers and catalytic converters to reduce harmful gas emissions. The versatility of ERW pipes is particularly prominent in the automotive field.
5. Furniture Industry
ERW steel pipes are used to manufacture home and commercial furniture, such as tables, chairs and bookshelves. Its structural strength and durability ensure the stability of furniture and are suitable for frames, legs and other load-bearing parts. Especially in the production of shelves and storage racks, ERW pipes provide safe and stable support.
6. Agricultural Industry
ERW pipes also play an important role in agricultural irrigation systems, greenhouse construction and fence construction. Its affordable price and easy installation make it widely recognized in agricultural applications and a common choice for farmers and agricultural facility builders.
One of the main benefits of ERW pipes is cost effectiveness. ERW pipes are cheaper to manufacture and easier to produce in large quantities than other types of pipes, such as seamless pipe or spiral welded pipe. This makes them a popular choice for applications that require large quantities of pipe.
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