Classification of welded pipe
Welded pipe is a common metal pipe, which is widely used in construction, machinery, automobile manufacturing, electronic equipment manufacturing and other fields due to its good corrosion resistance, strength and aesthetics. Generally, welded pipes can be classified according to different materials, processes and applications. Next, let's take a closer look at the classification of welded pipes.


A. According to material classification
1. Carbon welded pipe
Carbon welded pipe is a welded pipe made of carbon steel plate. Due to its excellent properties such as wear resistance, corrosion resistance and high strength, it is widely used in building materials, machinery manufacturing, automobile manufacturing, petrochemical and other fields.
2. Stainless steel welded pipe
Stainless steel welded pipe is a kind of welded pipe made of stainless steel sheet or cold rolled sheet. Stainless steel welded pipe has the characteristics of strong corrosion resistance, high surface quality and good heat resistance, and is widely used in food, pharmaceutical, chemical, aviation and other fields.
3. Alloy welded pipe
Alloy welded pipe is a kind of welded pipe made of alloy steel or cast steel. Compared with carbon welded pipes, alloy welded pipes have higher strength and better corrosion resistance, and are widely used in nuclear power, petrochemical, metallurgy and other fields.
B. according to the process classification
1. Long welded pipe
Long welded pipe is a kind of welded pipe made of long strip steel rolled into pipe and then welded. It has obvious advantages, such as smooth pipe surface, precise size, good welding quality, etc., and is widely used in petrochemical, pharmaceutical, food and other industries.
2. Spiral welded pipe
Spiral welded pipe is a long welded pipe made by rolling a steel plate into a parent pipe and undergoing continuous spiral welding. Spiral welded pipe has the characteristics of large volume, strong bearing capacity, and is suitable for oil and gas, water conservancy and other fields.
3. Longitudinal welded pipe
Longitudinal welded pipe is a kind of welded pipe made of steel plate bent into a pipe with rolls and then welded. Longitudinal welded pipe has the advantages of low production cost and simple process, and is widely used in construction, steel structure and other fields.
3. According to application classification
1. Ordinary welded pipe
Ordinary welded pipes are generally made of carbon steel or low alloy steel, and are widely used in construction, machinery, electric power and other fields.
2. Special welded pipe for hydraulic support
Welded pipes for hydraulic supports are generally made of hot-rolled steel rods or cold-rolled steel rods, and are mainly used in the manufacture of underground hydraulic supports in coal mines.
3. Welded pipes for construction
Welded pipes for construction are generally made of high-strength steel and medium-thick plate steel, and are mainly used in high-rise, long-span steel structures and other fields.
To sum up, the classification of welded pipes mainly involves differences in materials, processes and applications. In different fields, we need to select suitable types of welded pipes to provide efficient and reliable solutions for the needs of different situations.