Hot Rolled Groove Steel
Hot rolled groove steel (GB707‒88) is a type of steel that is widely used in the construction industry for forming structural members. It is a low carbon, high tensile strength steel that is easy to work with. The steel is available in three different grades and can be found in sheets, strips, or profiles of varying size and thicknesses.
Because of its high strength-to-weight ratio, hot rolled groove steel is ideal for making structures, or frames, for structures where lightness or strength is important. This type of steel is also used extensively for reinforcement of foundations of building projects as well as in bridge and railway construction. Other uses of hot rolled groove steel includes roll-formed sections, pressure vessels and equipment frames.
Hot rolled groove steel starts as a slab that is heated in an oven until it is red hot. Then, it is passed through tight rolls that shape it into a groove. The groove produced is consistent and is used to form the desired shape of the structural member. Hot rolled groove steel has a tensile strength of up to 2i times stronger than 20-gauge cold rolled steel.
The thickness and size of hot rolled groove steel vary depending on the desired application. Its high strength makes it an economical choice in many projects. In addition, it can be manipulated easily and welded without creating too much heat which reduces the need for additional welding and finishing.
Hot rolled groove steel is also resistant to wear and tear. Its hardness is improved by hardening, a process where the steel is exposed to high temperatures to increase its toughness. Different heat treatment techniques can be used to further improve its durability and strength.
The high fatigue strength makes hot rolled groove steel an ideal choice for certain applications such as automobile parts, sheet metal fabrication, and transportation infrastructure such as railway tracks. This type of steel is also used for aerospace structures and components.
Hot rolled groove steel does have some disadvantages. Though, it is highly ductile, hot rolled groove steel can suffer from work-hardening if bent or stretched. It can also be prone to high losses from corrosion if not properly protected. Hot rolled groove steel also has limited elasticity compared to cold rolled steel.
Despite some of its minor drawbacks, hot rolled groove steel remains an important material for the construction industry and for a variety of other manufacturing uses. It is economical, lightweight, and very strong and is available in a range of sizes, thicknesses, and grades depending on the application. Hot rolled groove steel has many benefits, making it an excellent choice for projects in which strength, resilience and cost-efficiency is important.
