Types and uses of welded pipes

Types and uses of welded pipes

Welded steel pipe is a cylindrical steel pipe made by welding the edges of steel plates or coils. According to the welding method and shape, welded steel pipes can be divided into the following categories:

Straight seam welded steel pipe (LSAW/ERW): Straight seam welded steel pipe is a steel pipe made by butting the edges of steel plates or coils and then welding them along a straight line. This kind of steel pipe has good strength and low production cost, but its strength is slightly lower than that of spiral welded steel pipes of the same specification.

Spiral welded pipe (SSAW): Spiral welded pipe is a steel pipe formed by rolling strip steel into a cylinder and welding it in a spiral direction. This kind of steel pipe has higher strength, but the production cost is slightly higher.

The main uses of welded steel pipes are as follows:

Transmission pipelines: Welded steel pipes are widely used to transport fluids such as oil, natural gas, coal gas, and water, especially in urban gas and water supply systems.

Structural pipes: Welded steel pipes are used in building structures, bridges, steel frames, supports and other engineering fields. They have good load-bearing capacity and earthquake resistance.
Machinery Manufacturing: Welded steel pipes can be used to manufacture various mechanical parts such as shafts, brackets, conveyor rollers, etc.

Oil and gas drilling: Welded steel pipes can be used to manufacture oil and gas drilling and oil production equipment, such as drill pipes, casing, etc.
Tower Fabrication: Welded steel pipes are used in the fabrication of broadcast and communications towers.

Greenhouse: Welded steel pipes are often used to make greenhouse supports because of their lower cost and better strength.
Bicycle and motorcycle manufacturing: Welded steel tubes are used to make bicycle and motorcycle frames.

Furniture manufacturing: Welded steel pipes can be used to produce various furniture such as bed frames, bookshelves, chairs, etc.

In summary, welded steel pipes have a wide range of applications, and their use depends on the type, specification and material of the steel pipe. When selecting welded steel pipes, the appropriate steel pipe type should be determined based on actual needs and engineering environment. At the same time, the installation, use and maintenance of steel pipes are also key factors affecting their performance and service life, and relevant specifications and standards need to be strictly followed.