S690Q/S690QL/S690QL1 Equal/Unequal Angle Steel

Leading Structural Innovation — S690QL Advanced High-Strength Steel Equal & Unequal Angles
Equal and unequal angles are essential components in steel structures such as trusses, bracing and heavy machinery frames. Conventional welding of S690QL high-strength steel tends to cause HAZ softening and reduced toughness.
Peakkong Special Steel has developed proprietary composite welding technology to overcome HAZ softening and deformation in welded angles, enabling high-precision S690QL equal and unequal angles to be mass-produced and customized.
Our welding procedures are certified by SGS, TUV and DNV, and the products comply with international structural standards including EN, BS, ASTM and JIS, ensuring quality and safety for major projects worldwide.

Supply Range & Specifications
Custom web thicknesses and leg widths available per project requirements, with weld seams achieving full penetration and equal strength.
· Equal Angles: Standard range 50mm×50mm–300mm×300mm, thickness 5–35mm
· Unequal Angles: Standard range 75mm×50mm–450mm×250mm, thickness 6–35mm
Note: One-to-one customization is available for oversized special dimensions beyond standard ranges, not limited by hot-rolled sizing.
Advantages of S690QL Equal / Unequal Angles
S690QL angles offer five core advantages, including stable HAZ mechanical performance, high yield strength, high precision with minimal deformation, non-standard customization and complete international certification.

Typical Applications of S690QL Equal / Unequal Angles
S690QL high-strength angles deliver excellent overall mechanical performance, suitable for long-span trusses, high-rise buildings, heavy engineering machinery, marine engineering and other applications.

Contact Us
If you are designing complex steel structures, large-scale infrastructure, high-rises or offshore projects and wish to reduce weight, cost and carbon emissions through steel upgrades, please contact us.
Peakkong Special Steel provides one-stop certified S690QL special-angle solutions.