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There are different classifications of steel, the following is the main steel classification：

1. According to chemical composition:
   (1) Low carbon steel
   (2) Medium carbon steel
   (3) High carbon steel.
   Carbon steel refers to an iron-carbon alloy containing a small amount of manganese, silicon, sulfur, phosphorus and other elements in addition to iron and carbon in steel, which is different because of the chemical composition containe in it.
2. According to the carbon content, there are two categories: steel and pig iron. Iron-carbon alloys with a carbon content of 0.03% to 2% are called steel, while iron-carbon alloys with a carbon content of 2% to 4.3% are called pig iron. Among them, alloy steel also includes:
   (1) Low alloy steel
   (2) Medium alloy steel
   (3) High alloy steel
3. The different forms of steel carbon can be divided into: white iron, gray iron and nodular cast iron.
4. According to smelting equipment:
   (1) Converter steel
   (2) Open hearth steel
   (3) Electric furnace steel
5. According to the quality of steel:
   (1) Ordinary steel
   (2) High-quality steel
   (3) High-grade high-quality steel
6. According to the steel structure:
   (1) Structural steel for construction and engineering is referred to as construction steel
   (2) Structural steel for machinery manufacturing
7. Professional steel points:
   (1) cast steel
   (2) forged steel
   (3) Hot rolled steel
   (4) Cold-rolled steel
   (5) cold drawn steel
8. Tool steel is generally used to manufacture various tools, such as carbon tool steel, alloy tool steel, high-speed tool steel, etc.
   According to the use of steel, it can divid into cutting tool steel, die steel and measuring tool steel.
9. Special steel Steel with special properties, such as stainless acid-resistant steel, heat-resistant skin-resistant steel, high-resistance alloy, wear-resistant steel, magnetic steel, etc.

The above is the introduction of Flagcrane to the classification of common steel and steel products.

Flagcrane have a professional technical team, which can design and produce standard and non-standard crane hoist and spare parts. If there are other special requirements. it can be customize according to user needs and negotiate by both parties.