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Hot rolled round steel and square steel (GB 702-86)
Hot rolled round steel and square steel is a common traditional steel in the steel industry, with the abbreviation of GB. Despite its popularity, it is no longer widely used in modern construction. This is largely due to the introduction of more advanced, lighter and more durable materials and production methods.
In terms of physical properties, hot rolled round steel and square steel follows GB 702-86 standards. According to the standard, hot rolled round steel and square steel should have the following properties:
Strength: The strength of the steel should be sufficient to withstand the design load.
Rigidity: The structural rigidity of the steel should be sufficient to withstand the required design loads without suffering deformations or collapse.
Durability: The steel should be corrosion resistant and not susceptible to rust. In addition, it should also be resistant to impact and wear and tear.
Formability: Hot rolled round steel and square steel should also possess good formability, allowing it to be cut, rolled, formed and welded into different shapes and forms.
After considering the products properties and their effects, hot rolled round steel and square steel can still be applied in the construction industry. It can be used in the production of columns, beams and other structural components. In certain instances, it can also be used for the repair, replacement or manufacturing of parts for agricultural machinery and various other tasks.
Despite the advantages, hot rolled round steel and square steel has certain limitations that must be acknowledged. Firstly, the lack of quality assurance and variable specifications presents safety concerns. Secondly, hot rolled steel is more expensive relative to more advanced materials. Finally, the heavy weight of hot rolled steel can lead to several problems such as difficulty in handling, transportation and installation.
Taking this into consideration, hot rolled round steel and square steel is no longer widely used in modern construction. It is generally replaced by materials and methods that can offer higher quality, performance and durability. In the future, hot rolled steel will most likely still be used in certain specific applications where its unique advantages can be fully utilized.
