Angle steel is a common metal structural material, named for its right-angled "L" shape cross-section. It is widely used in construction, mechanical manufacturing, bridge building and other fields. The following is a detailed analysis of Angle steel:
Products Description
Basic structure and classification
Structural features: It is composed of two mutually perpendicular edges (referred to as "legs"), forming a 90-degree Angle. It is divided into two categories according to whether the leg lengths are equal:
Equilateral Angle steel: The lengths of both legs are the same (e.g. ∠50×50×5).
Unequal Angle steel: The lengths of the two legs are different (e.g. ∠100×80×8).
Material: Common materials include ordinary carbon steel (Q235), low alloy steel, stainless steel and aluminum alloy. Different materials are suitable for different environments (such as anti-corrosion and high-temperature resistance requirements).
Manufacturing process
Hot-rolled Angle steel: Made through high-temperature rolling, it has a relatively rough surface and is suitable for large structures. It has high strength but relatively low dimensional accuracy.
Cold-formed Angle steel: Formed by cold-bending thin steel plates, it has a smooth surface and precise dimensions, and is suitable for light structures or decorative purposes.
Specification representation method
The specifications of Angle steel are usually marked as: ∠ side width × side width × thickness (equal side) or ∠ long side × short side × thickness (unequal side).
Example:
∠50×50×5: Equilateral Angle steel, leg length 50mm, thickness 5mm.
∠100×80×8: Unequal Angle steel, long leg 100mm, short leg 80mm, thickness 8mm.
Main application fields
Building structure: Used for steel beams, supports, and roof trusses to enhance load-bearing capacity.
Mechanical manufacturing: As a base, frame or conveyor track for equipment.
Bridge engineering: Connecting components or supporting structures to disperse loads.
Electric power engineering: Construction of transmission towers and cable trays.
Daily applications: shelves, furniture, and support components in decoration.
Advantages and selection suggestions
Advantages: High strength, flexible installation (can be welded or bolted), and low cost.
Selection considerations:
Load-bearing requirements: Select the thickness and material based on the load. In heavy-duty environments, thick-walled or alloy steel should be chosen.
Anti-corrosion treatment: Galvanized or powder-coated Angle steel is selected for humid environments.
Standard specifications: Refer to national standards (such as China's GB/T 706, the United States' ASTM A36).
Precautions
Installation method: When welding, pay attention to thermal deformation. For bolt connections, reserved holes should be provided.
Storage: Avoid open-air stacking to prevent rust. Stainless steel Angle steel should be stored separately from carbon steel.
