There are several grades of steel bars, and what are their differences
Steel bars are usually divided into multiple grades according to their strength and performance. Different grades of steel bars have different tensile strength, yield strength, elongation and other characteristics, suitable for different engineering needs.
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Steel types are classified according to chemical composition, mechanical properties, uses, standards and other aspects.
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Q235 steel material characteristics
Q235 is a common carbon structural steel widely used in construction, machinery, bridges, vehicle manufacturing and other fields. It complies with the relevant provisions of China's national standard GB/T 700-2006.
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Surface treatment of steel products
Steel products usually need surface treatment to improve their corrosion resistance, wear resistance and aesthetics. Common surface treatment methods include galvanizing, spraying, coating, pickling, etc. Galvanizing is to coat the surface of steel with a layer of zinc to prevent rust, which is widely used in construction, transportation, home appliances and other industries.
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I-beam is a steel with a cross-section shaped like the letter "I". It has high bending resistance and strength and is widely used in construction, bridges, steel structures, machinery manufacturing and other fields.
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Hot rolling refers to a process of processing metal materials at high temperatures. Usually, after the metal material is heated to above its recrystallization temperature (generally between 1000°C and 1300°C), it is rolled through rollers to change its shape, size and structure.
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