Structural steel

※   Structural steels can be classified into the following types: carbon structural steel, high-quality carbon structural steel, low-alloy high-strength structural steel, alloy structural steel, spring steel, weather-resistant structural steel, easy-to-machine structural steel, and non-quenched and tempered mechanical structural steel, etc.

※   Alloy structural steels are generally classified into quenched and tempered structural steels and surface-hardened structural steels. The carbon content is generally about 0.25% to 0.55%.

※   Structural steel refers to steel conforming to specific strength and formability grades. Structural steel is generally used for bearing and other purposes in which the strength of steel is an important design criterion.