In the iron and steel industry, seamless steel pipe is an important pipe, which is widely used in petroleum, chemical industry, electric power, construction and other fields. As a high-strength and high-toughness seamless steel pipe, Q420C seamless steel pipe is favored because of its excellent performance. This article will introduce the characteristics, production process, application fields and market prospects of Q420C seamless steel pipe in detail.
Q420C seamless steel pipe.
Executive standard: GB T8162 seamless steel pipe for structure, GB T8163 seamless steel pipe for fluid transportation.
Q420C seamless steel pipe, tensile strength 520 680MPa, wall thickness 16 thick yield strength 420MPa, wall thickness 16mm 30mm yield strength 400, wall thickness 30mm yield strength 380MPa
Q420C seamless steel pipe chemical composition: carbon: 020, Silicon: 050, manganese: 170, phosphorus: 0030, sulfur: 0025, niobium: 007, vanadium: 020, Titanium: 020, Cr: 030, Nickel: 050, copper: 020, nitrogen: 0015, molybdenum: 020, aluminum, 0015.
1. Characteristics of Q420C seamless steel pipe.
Q420C seamless steel pipe is a kind of low-alloy high-strength structural steel, its yield strength is 420MPa, with good low-temperature impact toughness, and the corrosion resistance is also outstanding. Compared with ordinary seamless steel pipes, Q420C seamless steel pipes have higher strength and toughness, which can meet the requirements of various complex environments.
Second, the production process of Q420C seamless steel pipe.
The production process of Q420C seamless steel pipe mainly includes smelting, continuous casting, rolling and heat treatment. In the smelting process, processes such as vacuum induction furnace melting and electroslag remelting are used to ensure the purity of the steel and the stability of the chemical composition. In the rolling process, the controlled rolling and cooling process is adopted to obtain good structure and performance. The heat treatment process is crucial to the performance of Q420C seamless steel pipes, and with different temperature and time controls, different strength and toughness can be obtained.
3. Application field of Q420C seamless steel pipe.
Due to its high strength, high toughness and good corrosion resistance, Q420C seamless steel pipe is widely used in petroleum, chemical industry, electric power, construction and other fields. In the petroleum industry, Q420C seamless steel pipes are used in the manufacture of transmission pipelines, oil well pipes and oil and gas gathering pipelines. In the chemical industry, it is used in the manufacture of reactors, heat exchangers and pipelines; In the field of electricity, it is used in the manufacture of chimneys, boilers and thermal pipes, etc.; In the field of construction, it is used to manufacture columns and supporting structures for high-rise buildings, etc.
Fourth, the market prospect of Q420C seamless steel pipe.
With the development of economy and the progress of technology, the application field of Q420C seamless steel pipe continues to expand. In the future, with the rapid development of new energy, environmental protection and other fields, the market demand for Q420C seamless steel pipe will continue to grow. At the same time, with the continuous improvement of the production process and the continuous emergence of technological innovation, the performance of Q420C seamless steel pipe will be further improved, providing high-quality material solutions for more fields.
In short, Q420C seamless steel pipe, as a high-quality pipe with high strength and high toughness, has broad application prospects. In the future, we need to further research and develop the production process and technology of Q420C seamless steel pipe to promote its better service to the development of various fields. At the same time, strengthen market research and development to meet the growing market demand and inject new vitality into the development of the steel industry.