LG37S Hot-rolled steel series

Produced with hot-rolling technology, the 37 Series delivers a bold and solid profile with exceptional structural stability. Its clean, powerful lines make it ideal for expansive floor-to-ceiling windows, public architecture, and industrial-style projects, creating a strong visual presence and architectural impact.

LG50S Cold-bent steel series

Formed through advanced cold-bending techniques, the 50 Series is distinguished by its slim and refined profile, combining strength with lightness. It is best suited for interior partitions, fine window divisions, and minimalist modern spaces, offering both stability and a sense of elegance.

LG65S Thermal-break steel series

With integrated thermal-break technology, the 65 Series combines the inherent strength of steel with superior insulation and soundproofing performance. It is particularly suited for villas, luxury residences, and high-performance commercial spaces, ensuring both comfort and long-term durability.

steel-look thermal-break aluminum alloy

Built on lightweight aluminum alloy with thermal-break design, the 65 Steel-look Series replicates the authentic appearance of steel while offering aluminum’s advantages of corrosion resistance, insulation, and reduced weight. Perfect for modern homes, apartments, and design-focused spaces, it balances performance with distinctive aesthetics.

Shanghai

Shanghai

Beijing

Shanghai

Shanghai

Shanghai

London

London

Australia

Qingdao

London

America

Black Arched Steel Windows: Timeless Elegance Meets Engineering Excellence

Transform architectural spaces with the dramatic silhouettes and robust functionality of Black Arched Steel Windows. These signature fenestration systems marry the romanticism of historical design with contemporary energy efficiency, making architectural arched steel windows ideal for heritage restorations, ecclesiastical buildings, and luxury residences seeking statement aesthetics without compromising performance.

Engineering & Material Superiority

• Structural Integrity: Each black steel arch window is fabricated from S355JR-grade steel (yield strength: 355 MPa), cold-rolled into smooth radius curves ≤3m span without structural joints. Reinforced corner welds exceed EN 1090-2 standards for wind load resistance (>2,400 Pa) 

• Advanced Corrosion Protection: Triple-layer epoxy-polyester powder coating (Qualicoat Class 2 certified) ensures black powder-coated steel arches resist UV degradation, humidity (>1,000 hrs salt-spray testing), and abrasion, maintaining finish integrity for decades 

• Thermal Break Innovation: Optional 34mm polyamide thermal barriers reduce U-values to ≤1.3 W/(m²·K) when paired with low-E glazing, eliminating condensation risks in temperature differentials up to 60°C 

Design Flexibility & Performance Specifications

• Radius Customization: Custom black steel arch windows accommodate radii from 500mm to 5,000mm, with segmented or true-arch configurations. Dual-finish options (e.g., matte black exterior/antique brass interior) enhance design cohesion.

• Glazing Compatibility: Engineered to support double/triple glazing units (thickness: 24-48mm), laminated security glass (EN 356 P5A impact rating), or stained glass inserts. Glazing rebates include continuous EPDM gaskets for airtight seals 

• Hardware Integration: Concealed multi-point locking systems (tested to PAS 24:2022) and friction hinges enable 180° opening, combining security with operational smoothness.

  
  

Applications & Sustainable Benefits

●Coastal & Urban Resilience: Salt-spray-resistant architectural arched steel windows deployed in Florida seaside villas (since 2018) show zero corrosion despite Category 4 hurricane exposure.
● Carbon Reduction: Recycled steel content (≥85%) and 100% recyclability contribute to LEED v4.1 credits. Thermal efficiency reduces building HVAC loads by ≤25% in temperate zones 

Installation & Global Compliance

• Pre-assembled black steel arch window frames ship with EN 14351-1 certification and BIM/Revit files for seamless integration.

• Critical installation protocol: Vertical/horizontal alignment within ±1.5mm tolerance using laser leveling, with silicone-sealed expansion joints to prevent water ingress