Seamless carbon steel pipe is a rough tube made by perforating a steel ingot or solid tube billet. It is a seamless tube, and then a steel pipe made by hot rolling, cold rolling or cold drawing. This kind of steel pipe is widely used in construction, petroleum, chemical industry, machinery and other fields due to its seamless characteristics, high strength, good corrosion resistance and good weldability. This kind of steel pipe is not only used for pipeline transportation, but also widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle frames, and steel scaffolding in construction. Although there are many types of seamless carbon steel pipes, they all have some common key characteristics, such as strength, hardness and durability. This article will introduce the manufacturing process, classification, application fields and characteristics of seamless carbon steel pipes in detail.