S690Q / S690QL / S690QL1, I-beam, H-beam

Leading Innovation in High-Grade Structural Steel Technology — CTOD Test Passed!

S690QL / S690QL1 Advanced High-Strength Steel H-beams & I-beams

S690QL and S690QL1 high-strength steels retain excellent impact toughness at -60°C. Conventional welding tends to cause HAZ softening, embrittlement and microcracks. Peakkong Special Steel has developed proprietary composite welding technology to solve the HAZ softening challenge. Weld joints have passed the stringent CTOD test, delivering outstanding fracture resistance and preventing brittle fracture under low stress.

The products comply with international standards including EN, BS, ASTM and JIS. Our welding procedures are certified by three global authorities: SGS, TUV and DNV, ensuring quality and safety for engineering projects worldwide.

Supply Specifications for S690QL / S690QL1 H-beams & I-beams Custom web heights, flange widths and thicknesses available per project requirements. Weld seams and HAZ achieve full penetration, equal strength and high toughness.

H-beams (High-precision / Wide-flange / Medium-flange)

Size range: 100mm × 100mm up to 1000mm × 400mm (covering HEA, HEB, HEM, UC series)

Thickness: Web & flange 5–80mm

I-beams (High-performance / Large-section / Narrow-flange)

Size range: 100mm × 55mm up to 600mm × 220mm (covering IPE, IPN, UB series)

Thickness: Web & flange 5–77mm

Note: One-to-one custom fabrication is available for oversized and variable-section beams and columns beyond standard ranges, breaking dimensional limits of hot-rolled profiles.

Six Core Advantages of S690QL / S690QL1 H-beams & I-beams

The product features six core advantages including CTOD certification, improved HAZ performance, low-temperature toughness, high strength with lightweight design, high-precision forming and non-standard customization capability.

Typical Applications of S690QL / S690QL1 H-beams & I-beams

This series of high-strength profiles boasts comprehensive mechanical properties, suitable for marine engineering, high-rise buildings, long-span bridges, heavy engineering machinery and other sectors.

Contact Us☎️

If you are designing complex steel structures, large-scale infrastructure, high-rises or offshore projects and require CTOD-qualified S690 high-strength profiles with resolved HAZ issues, please contact us. Peakkong Special Steel provides one-stop solutions for certified special steel products meeting global standards.