Black annealed steel pipe, also known as black annealed pipe, is a type of steel pipe that has been annealed at high temperatures. This type of steel pipe is made without any surface treatment, so the surface color is blackened by exposure to air at high temperature, and the surface is not brightened, giving it a black appearance. Its production process is simple and it is usually used in applications that do not require high surface finish and accuracy. Black annealed steel pipe is made of high quality carbon structural steel as raw material and precision processed. The products are characterized by smooth inner and outer walls, high dimensional accuracy and uniform structure, which ensure good fluid transportation capacity and stability. In addition, the annealed steel pipe has excellent toughness and ductility, which can be adapted to various complex installation environments.

Annealing process is the key step in the manufacturing process of this product. By controlling the heating temperature, holding time and cooling rate and other parameters, to achieve the uniformity of the steel pipe organization and stabilization of properties. The annealed steel pipe has low hardness and good plasticity, which facilitates subsequent processing and installation. In addition, it excels in electrical conductivity with low resistivity, which ensures the transmission quality of high-precision signals. At the same time, it also has excellent mechanical properties and high temperature performance, with sufficient mechanical strength, and not easy to deformation. It has a wide range of applications. In the petroleum industry, it is widely used in crude oil transportation, processing and oil drilling, oil field development, oil and gas pipelines and other fields, thanks to its high strength, corrosion resistance and high temperature resistance. In the chemical industry, due to its excellent corrosion resistance, it is able to resist the erosion of corrosive media such as acid, alkali and salt, and is commonly used in distillation towers, petrochemical equipment, fertilizer equipment and other important parts. And it is also suitable for the production of simple furniture, strollers, storage racks, agricultural sheds, play equipment and fitness equipment.

 Of course, the quality of our products is unquestionable. We have obtained KS, JIS and ISO9001 international certifications. And our production efficiency is also very high, with a monthly output of about 5000 tons. And the minimum order quantity is 20 tons. In general, our delivery time is within 31-45 days, and may be delayed if the demand is extremely large or special circumstances occur. For the packaging methods, we choose suitable package and reinforce for various steel products when loading and transport. If you have any further questions, please don’t hesitate to contact us. https://www.shaiyia.com/