Black Seamless Steel Pipe

The Steel of Black Seamless Steel Pipe, after rolling treatment, has a dense and evenly distributed internal structure, bringing excellent strength performance and compressive resistance capacity, and can meet the usage requirements of high-pressure working conditions. Its surface remains smooth and is not prone to dirt accumulation. Some products have also undergone special anti-corrosion treatment and can be used in scenarios where corrosive media are transported.

The inner and outer diameters of black seamless steel pipes have a relatively small deviation, and the wall thickness is also relatively uniform, which can provide a guarantee for the sealing performance and stability of the pipeline. At the same time, it also has excellent processing performance and is easy to perform cutting, welding, bending and forming operations, which can meet the actual requirements of different complex projects. Thanks to its stable material and wear-resistant properties, steel pipes have a long service life, which can help users reduce the costs incurred by later maintenance and replacement.

In the petrochemical industry, it can be used to transport crude oil, natural gas and various chemical media. In the power industry, it can be seen in the manufacturing of equipment such as boiler pipes, steam pipes, and power station water transmission pipes. In mechanical manufacturing scenarios, it is an excellent material choice for producing mechanical parts, hydraulic cylinders, bearing sleeves and other components. This type of steel pipe is also frequently used in the water supply and drainage pipes of building structures, Bridges and high-rise buildings. In addition, it also has application space in fields such as aerospace, shipbuilding, the automotive industry, and medical equipment.

To produce black seamless steel pipes, the steel billet is first heated to 1200-1300℃, then punched and formed through a piercing machine. After that, it is rolled by a pipe rolling mill and sized by a sizing machine. Finally, it undergoes cooling, straightening, cutting and other processes to form the finished product. In terms of product specifications, the outer diameter is usually between 6 and 610 millimeters, among which φ10 to φ219 millimeters are commonly used sizes. The wall thickness range is 1 to 25 millimeters. The length is generally 4 to 12 meters. At the same time, we also support customized production based on the specific needs of users.