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

French Vintage Steel windows embody pre-industrial metallurgical craftsmanship through augmented traditional techniques. Each unit undergoes micro-sandblasting (Sa 2.5 per ISO 8501-1) before application of linseed oil-based primers that chemically bond to ferrous substrates—mimicking original 18th-century anti-corrosion methods. Unlike cast iron replicas, these steel windows utilize cold-rolled A1008 steel with 185MPa yield strength, enabling 28mm slim sightlines while supporting 3.5m² arched spans without intermediate mullions.

Historical accuracy features:

• Lost-wax casting – Ornamental rosettes and fleur-de-lis motifs recreated from archival molds with <0.15mm dimensional variance, hand-chased for surface authenticity.

• Reversible installation – Mechanical expansion anchors distribute structural loads across 5:1 ratios in fragile stone masonry, enabling UNESCO-compliant retrofits without cementitious binders.

• Optical fidelity – Antique glass with 18–22 bubbles/cm² replicates 1720s light diffusion while blocking 99% UV radiation (EN 410 certified).

Château de Chantilly’s 2024 restoration achieved 100% material compatibility using French Vintage Steel windows in Louis XV-era openings, maintaining original daylight factors ±2% despite upgrading to double glazing. The microcrystalline wax finish develops authentic patina over 5–7 years without corrosive oxidation, requiring only annual beeswax polishing. For liturgical applications, specialized low-iron glass options achieve 97 CRI to illuminate gilded altarpieces without spectral distortion—documented in Notre-Dame de Paris reconstruction studies.

Technical validation:

• Profile accuracy: ±0.8mm tolerance vs. 1750s blueprints

• Craftsmanship: 320 hours/manual labor per standard casement

• Fire integrity: 90-minute rating (BS 476-22)

• Corrosion resistance: 200µm hot-dip galvanization (ISO 1461)