Q355E seamless steel pipe is a high-strength, low-alloy steel pipe that is widely used in various industrial fields. The "Q355E" in its name represents its special material and performance requirements. Among them, "Q" indicates the yield strength, "355" indicates that the yield strength is 355MPa, and "E" indicates the impact toughness grade. With its excellent mechanical properties and good welding properties, this kind of steel pipe has become an indispensable and important material in modern industry.
Q355E seamless steel pipe implementation standard: GB T8162 seamless steel pipe for structure, GB T8163 seamless steel pipe for fluid transportation, GB 6479 seamless steel pipe for high-pressure fertilizer equipment.
The product shall meet the requirements of TSG D7002 pressure piping element type test rules.
Chemical Composition: Carbon: 018, silicon: 020~0.50, manganese: 120~1.70, Cr: 030, molybdenum: 010, vanadium: 015, Niobium: 007, nickel 050, phosphorus: 0025, sulfur: 0020.
mechanical properties; Tensile strength: 470 630MPa, yield strength 355, low temperature -40 degree impact absorption 27
Product specifications: outer diameter 19mm 1020mm, wall thickness 20mm~140mm.
Production mode: hot rolling, cold drawing, finishing rolling, hot expansion. Delivery Condition: Heat Treated.
First of all, the high strength of Q355E seamless steel pipe is one of its most prominent features. Compared with ordinary steel pipes, Q355E seamless steel pipes have higher yield strength and tensile strength, and can withstand greater pressure and tensile forces. This makes it have a wide range of applications in situations that need to withstand heavy loads and high pressures, such as oil and gas transmission pipelines, bridges, buildings, and other fields. At the same time, its low alloy composition also makes Q355E seamless steel pipe have better corrosion and wear resistance, and can maintain stable performance in various harsh environments.
Secondly, the good welding performance of Q355E seamless steel pipe is also one of the reasons for its popularity. Due to the uniform composition and dense structure of Q355E seamless steel pipe, its welded joints have good mechanical properties and corrosion resistance. This makes it easier to weld and join during the manufacturing process, improving productivity and reliability of use.
In addition to the above characteristics, Q355E seamless steel pipe also has good machinability and plasticity. It can be processed by various molding processes, such as bending, rolling, cutting, etc., to adapt to different usage needs. At the same time, the surface quality of Q355E seamless steel pipe is also very high, the surface finish is good, and there are no obvious defects and flaws, making it more safe and reliable in the process of use.
In practical applications, Q355E seamless steel pipes are widely used in various fields. In the field of oil and gas transmission, Q355E seamless steel pipe ensures the safety and stability of the transmission pipeline with its high strength and good corrosion resistance. In the field of bridges and construction, Q355E seamless steel pipe provides solid support for bridges and buildings with its excellent mechanical properties and plasticity. In addition, Q355E seamless steel pipe is also widely used in machinery manufacturing, shipbuilding, chemical industry and other fields, making an important contribution to the development of modern industry.
In short, Q355E seamless steel pipe has become an indispensable and important material in modern industry due to its high strength, good welding performance, machinability and plasticity. In the future, with the continuous progress of science and technology and the continuous development of industry, Q355E seamless steel pipe will be used in more fields, bringing more convenience and benefits to human production and life.