Reliable Supplier Tool Steel to Guatemala Factories

According to the use of steel it can be divided into structural steel, stool steel, special steel and professional steel.
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Structural steel can be divided into two kinds, the construction and engineering using structural steel referred to construction steel, it is used for buildings, bridges, ships, boiler or other structure parts. Such as carbon structural steel and low alloy steel, rebar, etc. Machinery manufacturing structural steel is steel product used for steel parts of manufacturing machine structure. This kind of steel is basically all high quality steel or quality steel, mainly high quality carbon steel, alloy steel, easy cutting structural steel, spring steel, rolling bearing steel and so on. Tool steel is commonly used for manufacturing all kinds of tools, such as carbon steel, alloy steel, high speed steel, etc. According to use the tool steel can be divided into die steel, cutting tool steel and measuring tool steel. Special steel is the steel with special performance, such as stainless steel, heat-resistant not peeling acid steel, high resistance alloy, wear-resisting steel, magnets steel and so on. Professional steel is steel product for professional industrial department using, such as automotive steel, aviation steel, agricultural machinery steel, chemical machinery steel, boiler steel, welding rod and so on.
According to the quality of the steel it can be divided into ordinary steel, quality steel and high quality steel. In ordinary steel the impurity element is more, sulphur content is generally less than 0.05%, phosphorus content is less than 0.045%, such as carbon structural steel and low alloy steel and so on. Quality steel with less impurity element, sulfur and phosphorus content are generally less than 0.04%, such as high quality carbon steel, alloy steel, carbon steel and alloy steel, spring steel, bearing steel and so on. High quality steel contains few impurities element, sulphur content is generally less than 0.03%, and phosphorus content is less than 0.035%, such as structural alloy steel and so on. High quality steel usually adds symbols “A” or Chinese character “high” behind the steel grade for identification.