Welded pipes, as an important industrial pipeline material, are widely used in oil, natural gas, chemical industry, construction and other fields. Understanding the production methods, precautions and scope of use of welded pipes is of great significance for the correct selection and use of welded pipes.
1. Production methods of welded pipes

The production methods of welded pipes mainly include high-frequency welded pipes, spiral welded pipes, straight seam welded pipes and so on.

1. High-frequency welded pipes

High-frequency welded pipes use high-frequency current to generate heat on the edge of the steel pipe, melt the edge of the steel pipe, and then weld it together by pressure. The welded pipes produced in this way have the characteristics of fast welding speed and good weld quality, and are suitable for the production of small-diameter and thin-walled welded pipes.

2. Spiral welded pipes

Spiral welded pipes are made by rolling steel plates into spirals and then connecting the edges of the steel plates by welding. The welded pipes produced in this way have the characteristics of large pipe diameter, uniform wall thickness, and high pressure resistance, and are suitable for conveying large flow and high-pressure fluids.

3. Straight seam welded pipe

Straight seam welded pipe is to cut the steel plate into strips of a certain width, and then connect the edges of the steel plate into a straight seam by welding. The welded pipe produced in this way has the characteristics of high production efficiency, low cost and wide application range, and is suitable for the production of welded pipes of various specifications and uses.
2. Precautions for welded pipes

In the process of producing and using welded pipes, the following points need to be noted:

1. Material selection of steel pipes. The material of the welded pipe should select the appropriate steel type and steel grade according to the use environment and purpose to ensure that the welded pipe has sufficient strength and corrosion resistance.

2. Inspection of steel pipes. During the production process, the steel pipes should be strictly inspected, including appearance inspection, dimension measurement, chemical composition analysis, mechanical properties test, etc., to ensure that the quality of the steel pipes meets the standard requirements.

3. Control of welding process. Welding is a key link in the production of welded pipes, and the welding process parameters need to be strictly controlled, including welding current, welding speed, welding temperature, etc., to ensure the quality of the weld.

4. Post-weld treatment. After welding, the welded pipe should be heat treated, rust removed, and anti-corrosion treated to improve the corrosion resistance and service life of the welded pipe. 3. Scope of use of welded pipes

As an important industrial pipeline material, welded pipes are widely used in the following fields:

1. Oil and natural gas transportation. Welded pipes have good pressure resistance and corrosion resistance, and are suitable for conveying fluids such as oil and natural gas.

2. Chemical industry. Welded pipes can be used to convey various chemical media, such as acids, alkalis, salts, etc.

3. Construction industry. Welded pipes can be used in building water supply and drainage, fire protection, HVAC and other systems, as well as the construction of infrastructure such as bridges and tunnels.

4. Agricultural machinery. Welded pipes can be used to manufacture conveying pipes and connecting parts for agricultural machinery.

In short, as an important industrial pipeline material, welded pipes need to pay attention to material selection, inspection, welding process control, and post-weld treatment during production and use. At the same time, welded pipes have broad application prospects in the fields of oil, natural gas, chemical industry, construction, etc. To learn more, please visit the website: https://www.baowi-steel.com/newsdetail/differences-between-sch10-and-sch40-stainless-steel-pipes.html