It means that there is no weld on the steel pipe. This kind of steel pipe is integrally formed, and is directly rolled from a billet in the production. Because of the seamless relationship, it has a very good high pressure resistance advantage, and is often used as a boiler tube and a bearing tube. , oil pipes, gun barrels, etc., it has hot rolling, cold rolling, cold drawing, extrusion and other construction methods. In addition to the basic circle, it also has complex shapes such as square, oval, triangle, star, etc.

Steel pipes facilitate our great efforts in society. Steel pipes are also divided into many types. Well, the difference between steel pipes is the difference between seamed steel pipes and seamless steel pipes. What are their characteristics? Seamless steel pipes are round, square and rectangular steel pipes with hollow sections without seams.

The seamless steel pipe is made of steel ingots or solid tube blanks through perforation to make capillaries, and then made by hot rolling, cold rolling or cold drawing. The section of seamless steel pipe is hollow and is widely used as a pipeline for conveying fluids. Steel pipes have low bending and torsional strength and are lighter in weight than solid steels such as round steels. It is an economical type of steel that is widely used in the manufacture of structures.

Mechanical components, such as oil drill pipes used in construction projects, automobile transmission shafts, bicycle frames and steel scaffolding, production processes of seamless steel pipes: hot-rolled, hot-expanded, cold-drawn, cold-rolled, centrifugally cast seamless steel pipes. Specifications of seamless steel pipes: 8-1240× 1-200mm. Welded steel pipes refer to steel pipes or steel plates that are bent and deformed into round, square and other shapes, and then welded to form joints on the surface.

The blank used for welded steel pipe is steel or strip. According to the different welding methods, it can be divided into arc welded pipe, high frequency or low frequency resistance welded pipe, gas welded pipe, furnace welded pipe and Bondi pipe, and classified according to the processing form of seam steel pipe and seamless steel pipe. Seam steel pipes and seamless steel pipes are classified according to the processing form. Seam steel pipes and seamless steel pipes are classified according to the processing form.