Hot Rolled and Cold Rolled Angles
Hot rolled angles are formed by rolling heated steel into L-shaped sections and are used for structural framing where strength and size range matter. Cold rolled angles are formed from strip at room temperature, giving a smooth surface and tight dimensions for lighter and more precise applications.
Equal and Unequal Leg Sections
Equal angles have legs of the same length and give symmetrical stiffness for trusses, frames and brackets. Unequal angles have different leg lengths and are chosen where loading is not symmetric, such as roof purlins and edge members.
Material Grades
A36 to ASTM is the general structural grade for welded and bolted construction. Q235 to GB/T 700 is the general carbon steel grade with a minimum yield strength of 235 MPa, and Q345 to GB/T 1591 provides higher strength for heavier loads.
Slotted Angles
Slotted angles have elongated holes along the legs, allowing bolts to be positioned at any point along the length. They are used for adjustable racks, shelving, cable trays and lightweight structures where on-site adjustment is required.
Applications
Structural framing, bracing and connection details.
Adjustable racks, shelving and storage systems.
Frames for equipment, enclosures and cable supports.
Light steel structures and architectural detailing.
Frequently Asked Questions
Q: What is the difference between hot rolled and cold rolled angle?
Hot rolled angles are stronger in large sizes and lower in cost, while cold rolled angles have a smoother surface and tighter dimensional accuracy.
Q: What is a slotted angle used for?
Slotted angles are used for adjustable racks, shelving and framing where bolt positions must be adjustable.
Q: Which grade is best for structural framing?
A36 or Q235 suits general framing, and Q345 is chosen where higher strength is required.
Q: Can the angles be galvanized?
Yes, hot-dip galvanizing is available for outdoor service.
Q: Are certificates provided?
Yes, mill test certificates are supplied with each order.