Steel pipe has hollow section, and its length is much larger than the diameter or perimeter of steel. According to the section shape, it is divided into circular, square, rectangular and special-shaped steel pipes; According to the material, it is divided into carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe; It is divided into steel pipes for transmission pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment, etc; According to the production process, it is divided into seamless steel pipe and welded steel pipe. Seamless steel pipe is divided into hot rolling and cold rolling (drawing), and welded steel pipe is divided into straight seam welded steel pipe and spiral seam welded steel pipe.
China is the main producer of steel pipes in the world. In 2020, the national output was 89.5427 million tons, with a year-on-year increase of 3.73%, accounting for about 60% of the world output. At the same time, the supply cycle of steel pipe industry is closely related to the profits of infrastructure, municipal administration and manufacturing industry. Therefore, under the implementation of the "14th five year plan" and the new infrastructure policy, the supply of China's steel pipe industry will continue to maintain a growth trend.
Post time: Aug-04-2022