At Fengye Steel Tube Factory, we provide detailed information about Q345B seamless steel pipes. Q345B is a type of carbon steel pipe commonly used in various industrial applications. The "Q" in Q345 stands for the yield strength of the material, while the number 345 refers to its minimum yield strength in megapascals (MPa). It's important to note that as the thickness of the steel increases, the actual yield strength may decrease slightly. The different grades of Q345 steel—such as Q345A, Q345B, Q345C, Q345D, and Q345E—mainly differ in their impact toughness at varying temperatures. For example, Q345A does not undergo impact testing, while Q345B is tested at room temperature (20°C), Q345C at 0°C, Q345D at -20°C, and Q345E at -40°C. Each grade is designed for specific environmental conditions, ensuring optimal performance and safety in different climates. When it comes to calculating the weight of a Q345B seamless steel pipe, you can use the following formula: [(outer diameter - wall thickness) × wall thickness] × 0.02466 = weight per meter in kilograms. This helps engineers and buyers estimate the load and transportation requirements accurately. The chemical composition of Q345B steel includes elements such as carbon (C: 0.12–0.20%), silicon (Si: 0.20–0.60%), manganese (Mn: 1.00–1.60%), phosphorus (P: ≤0.040%), sulfur (S: ≤0.040%), and trace amounts of other elements like nickel (Ni: ≤0.30%), chromium (Cr: ≤0.30%), copper (Cu: ≤0.20%), vanadium (V: 0.02–0.15%), and niobium (Nb: 0.015–0.06%). These elements contribute to the overall strength, ductility, and corrosion resistance of the steel. If you're looking for high-quality Q345B seamless steel pipes, Fengye Steel Tube Factory offers reliable products suitable for construction, mechanical engineering, and pipeline systems. For more details, visit our website or contact us directly. Source: http://?/3_3.html China Glass Water Distiller, Water Distiller Amazon manufacturers, welcome distilled water manufacturers, giant home water distiller buyers from around the world to visit our website, if you need to contact us, we will provide services for you. Glass Water Distiller,Water Distiller Amazon,Distilled Water Maker,Megahome Water Distiller Zenith Lab (Jiangsu) Co.,Ltd , https://www.zenithlabo.com