1. Divide carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy by material,
2. According to the manufacturing method, it can be divided into pushing, pressing, forging and casting
3. According to the manufacturing standards, it can be divided into national standard, electric standard, water standard, American Standard, German standard, Japanese standard, Russian standard, etc Stainless steel is also one of the metal materials with high strength Due to the corrosion resistance of stainless steel, it can keep the integrity of engineering design of structural components Chromium containing stainless steel also integrates mechanical strength and high extensibility, which is easy to process and manufacture components, and can meet the needs of architects and structural designers All metals react with oxygen in the atmosphere to form an oxide film on the surface Unfortunately, the iron oxide formed on ordinary carbon steel continues to oxidize, which expands the corrosion and eventually forms holes The surface of carbon steel can be ensured by electroplating with paint or oxidation resistant metals (such as zinc, nickel and chromium).
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