Are there any differences between different specifications of straight seam steel pipes?

There are many types of steel pipes. According to the welding method, steel pipes can be divided into straight seam steel pipes and spiral steel pipes. Since the two steel pipes are welded in different ways, the properties of the two steel pipes are also different. Welded pipes can also be subdivided according to the different uses of steel pipes. There are roughly the following types: ordinary welded pipes, wire casing pipes, automotive pipes, oxygen blown welded pipes, electric welded thin-walled pipes, etc. There are many classifications of steel pipes in practical applications, so I won’t list them all here.

Ordinary welded pipe: The main function of ordinary welded pipe is to transport some fluids. During the production process, the pipes welded are usually made of mild steel, which is easier to weld by electric welding. The steel pipe shall conform to the specifications of thickened steel pipe. Nominal pressure pipes are used for pressure, bending, deformation and other tests. To pass such tests, although the delivery length of ordinary welded pipes is four to ten meters, they must have certain requirements for the production process and quality of ordinary welded pipes.

With the continuous development of modern welded pipe technology, the quality of straight seam steel pipes is getting better and better. At this stage, straight seam steel pipes can replace most steel pipes and are used in many aspects of engineering.
Metric welded pipe: The specifications of metric welded pipe are the same as stainless steel pipe. Metric welded pipes are made of ordinary carbon steel, high-quality carbon steel or general low-kinetic energy improved alloy steel, and then cold and hot-rolled strip electric welding, or hot-rolled strip electric welding technology is used for cold drawing after welding.
Metric welded pipes are divided into ordinary pipes and thin-walled pipes. They are often used to construct prefabricated components, such as automotive driveshafts or transport working fluid mechanics. Thin-walled tubes are used in enterprise production technology for the manufacture of furniture, lighting equipment, etc. Compressive strength and tensile properties testing of seam welded steel pipes.
Idler tube: The idler tube is a very special steel tube whose main purpose is to be used as a belt idler electric welded steel tube. During the production process, pressure and deformation tests are required.

Spiral welded steel pipe: The high carbon steel strip can be cold rolled into a tube blank according to the helix angle (called the forming angle) set by the general structural steel or low alloy structure, and then the pipe seams are welded together to form direct welded steel pipes and spiral welded pipes. Suitable for In petrochemical transportation. Their specifications mainly depend on the type of steel pipe. Spiral welded steel pipe has single-sided and double-sided welding as well as front and back welding. The welded pipe should ensure welding pressure test, better compressive strength and cold drawing performance, and meet the design requirements.