[Q345B right-angle square tube Q345B right-angle square tube].
Q345B right-angle square pipe and Q345B right-angle square tube are two types of steel commonly used in modern construction, and their main difference is their shape and use. Q345B right-angle square pipe is a steel pipe with square cross-section, while Q345B right-angle rectangular pipe is a steel pipe with rectangular section. Both of these steels are made of Q345B steel, so they have good strength and durability, and are widely used in various building structures and bridge projects.
1. Q345B right-angle square tube.
Q345B right-angle square pipe is a kind of steel pipe with square section, and its four corners are 90 degree right angles. The advantage of this steel pipe is that its four corners are straight, easy to cut and weld, and also has good strength and stability. The manufacturing process of Q345B right-angle square tube mainly includes two methods: cold drawing and hot rolling. The cold drawing process is to continuously draw the billet to obtain a steel pipe with higher strength and precision. The hot rolling process, on the other hand, is to heat the billet to a high temperature and then roll it, resulting in a steel pipe with a larger diameter and thickness.
The main characteristics of Q345B right-angle square tube include high strength, high toughness, good fatigue resistance and good welding performance. The yield strength of this kind of steel pipe is generally between 300-400MPa, with good tensile strength and elongation, and can withstand large loads and stresses. In addition, the Q345B right-angle square tube also has good low-temperature toughness, which can maintain its strength and stability at lower temperatures. The welding performance of this steel pipe is also relatively good, and it can be connected by various welding methods, such as arc welding, submerged arc welding, etc.
Second, Q345B right-angle rectangular tube.
Q345B right-angle rectangular tube is a kind of steel pipe with rectangular cross-section, its cross-sectional shape is rectangular, and the four corners are also 90 degree right angles. Compared with Q345B right-angle square pipe, Q345B right-angle square tube has larger length and width dimensions, while less thickness. The advantage of this type of steel pipe is that its cross-sectional shape is more reasonable, and it is better able to withstand various loads and stresses.
The main characteristics of Q345B right-angle rectangular tube include high strength, high rigidity, good fatigue resistance and good plasticity. The yield strength of this kind of steel pipe is generally between 300-400MPa, with good tensile strength and elongation, and can withstand large loads and stresses. In addition, the rigidity and stability of the Q345B right-angle rectangular tube are also relatively good, and it can maintain the stability of its shape and size in various environments. The plasticity of this kind of steel pipe is also relatively good, and it can be formed and processed by various plastic processing methods.
Third, the field of application.
Q345B right-angle square tube and Q345B right-angle rectangular tube are widely used in various building structures and bridge projects, such as high-rise buildings, subways, highways, railway bridges, etc. The strength and durability of these two steels are relatively good, and they can withstand the loads and stresses caused by various natural disasters and human factors, such as **, high winds, vehicle impacts, etc. In addition, these two types of steel also have good environmental performance, such as low noise, low radiation, etc., and have less impact on the surrounding environment and human health.
In a word, Q345B right-angle square pipe and Q345B right-angle square pipe are two kinds of steel commonly used in modern construction, they have good strength and durability, and are widely used in various building structures and bridge projects. In the future, with the continuous progress of science and technology and the continuous expansion of application fields, these two kinds of steel will be more widely used and promoted.