S960QLH Steel Tubes / S960QLH Square Hollow Sections (SHS) / S960QLH Rectangular Hollow Sections (RHS) / S960QLH Ultra-High Strength Steel Tube Manufacturer

Peakkong Special Steel leverages self-developed Laser-Arc Hybrid Welding technology and high-precision custom tubular production lines to break the limitations of conventional processes. We focus on supplying premium S960QLH / S960QL1H square, rectangular and circular tubes for global clients.

More than just tube manufacturing, we also provide extended one-stop deep processing services including precision cutting, high-strength welding and fine coating to fully empower and add value to your business.

Mutual Recognition of Multiple International Standards : Our products fully comply with major global standards including European EN, American ASTM, British BS and Japanese JIS.

Classification Society Certifications : Our welding procedures and qualifications have obtained dual approvals from world-renowned third-party authorities such as SGS, DNV and TÜV.

100% NDT Prior to Delivery : Every tube undergoes rigorous Non-Destructive Testing (NDT). Professional Radiographic Testing (RT) and Ultrasonic Testing (UT) inspection reports are supplied upon shipment.

Flexible Support for R&D Projects : Catering to R&D requirements of high-end engineering, we resolve the pain point of high Minimum Order Quantity (MOQ) and support flexible customisation.

Specification Table for Hollow Structural Sections
Peakkong Special Steel boasts strong capabilities for custom mould development and extreme dimension machining. Standard and custom ranges are listed below:

• Dimension Range of Section Profiles
• Wall Thickness: 3.0 mm – 30.0 mm
• Applicable Standards: EN 10210-3 / EN 10219-3, ASTM A500 / A1085
• Square Tubes: 40 × 40 mm – 500 × 500 mm
• Rectangular Tubes: 50 × 30 mm – 600 × 400 mm
• Circular / Round Tubes: Outer Diameter φ42.4 mm – φ610 mm

Ultra-high strength enables substantial reduction of cross-sectional size for columns and members. This not only unlocks more usable indoor space, but also gives architects greater freedom for sleek, streamlined facade designs.

Extreme Industry & Offshore Engineering (Polar Mining Machinery, Deep-Sea Extraction Equipment, Heavy-Load Aerial Ropeways)
Relying on the exceptional low-temperature impact toughness of S960QL1H, our products ensure long-term stable operation of equipment under high dynamic load, high fatigue and alternating low-temperature stress environments in polar and deep-sea conditions, extending the full lifecycle of assets.

Contact Us
If you are planning and designing complex steel structures, large-scale infrastructure, high-rise buildings or offshore projects, and wish to adopt premium high-strength steel profiles that have passed CTOD tests and overcome HAZ limitations for design optimisation; or if you want to learn more about ultra-high strength hollow structural sections S960QLH/S960QL1H as well as advanced high-strength steel I/H sections, please feel free to contact us anytime!

Peakkong Special Steel delivers one-stop solutions for state-of-the-art, safe and globally certified special steel products.