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  • Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair
  • Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair
  • Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair
  • Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair
  • Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair
  • Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair
Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair

Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair

  • >= 2 Sets
    $2,000
View product details

Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Space-Efficient Vertical Connectivity: The spiral design with cantilever construction optimizes vertical space, ideal for compact areas like lofts, small commercial spaces, or residential apartments.
  • Durable Material Integration: Combines stainless steel for structural integrity and corrosion resistance with optional glass or wood accents for aesthetic versatility, ensuring both functionality and modern style.

Key features

  • 1. Corrosion-Resistant Stainless Steel Construction

    • With a corrosion-resistant stainless steel body, ensure long-lasting durability in outdoor and commercial environments while maintaining a sleek, modern aesthetic.

  • 2. Sleek Cantilever Design for Modern Aesthetics

    • With a cantilever design that minimizes visible supports, achieve a clean, unsupported look ideal for contemporary homes and commercial spaces.

  • 3. Space-Efficient Spiral Configuration

    • With a compact spiral design, maximize vertical space utilization in small areas, making it perfect for lofts, villas, or commercial offices.

  • 4. Versatile Application Across Environments

    • Designed for residential, commercial, and outdoor use, this staircase adapts to diverse scenarios—from home lofts to high-traffic office spaces.

  • 5. Modular Components for Customization

    • With modular stainless steel and glass/wood components, customize the staircase to match interior designs while ensuring structural integrity.

Product details

Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair

The Stainless Steel Central Stringer Kit Cantilever Stairs Round Spiral Stair combines sleek modern design with versatile functionality. Engineered for durability and adaptability, it supports applications ranging from residential lofts to commercial spaces. Its modular construction allows customization of materials (stainless steel, glass, steel-wood) and shapes (straight, spiral, arc), ensuring seamless integration into diverse architectural styles.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialStainless steel (primary), glass, steel-woodCommercial buildings (fire resistance), outdoor spaces (weatherproofing)
Design ShapeSpiral, straight, arcSpace-constrained lofts,别墅 entrances, modern office lobbies
Load Capacity1500 kg (stainless steel core)High-traffic residential/commercial use
CertificationsCE, ISO 9001EU and global construction standards compliance

Customization guide

Adjustable parameters include:

  • Material Mix: Swap glass inserts for steel-wood in high-moisture areas.
  • Spiral Radius: Customize from 1.2m to 2.5m to fit spatial constraints.
  • Rail Height: Modify from 85cm to 110cm for ADA compliance or child safety.

Get inspired

With its cantilever design, this staircase maximizes vertical space while maintaining structural integrity. Pair stainless steel steps with glass panels for a minimalist aesthetic, or opt for steel-wood treads to blend warmth into contemporary interiors.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Material Grade304 Stainless Steel316 Marine Grade316L Premium Alloy
CustomizationPre-set sizesAdjustable dimensionsFull modular design
Weight200 kg/m²180 kg/m² (+10% lighter)160 kg/m² (+20% lighter)
Load Capacity1200 kg1500 kg2000 kg (+66% higher)

Supplier's note

  1. Technical Breakthroughs:

    • Spiral Geometry: 25% more space-efficient than traditional stairs, validated via FEA simulations.
    • Hybrid Materials: Stainless steel core with glass inserts achieve 40% higher corrosion resistance than all-steel designs.
    • Modular Assembly: Reduces installation time by 30% compared to welded structures.

  2. Version Selection Guide:

    • Base Model: Ideal for standard residential use (e.g.,别墅 renovations) where budget is a priority.
    • Advanced Model: Targets commercial projects requiring corrosion resistance (e.g., coastal resorts) and moderate customization.
    • Pro Model: Best for high-end architectural projects needing premium aesthetics (e.g., glass-steel hybrids) and heavy-duty performance (e.g., commercial malls).

With the Pro’s 2000 kg load capacity, you can safely install it in industrial lofts while maintaining a sleek aesthetic. The Advanced Model’s marine-grade steel ensures longevity in outdoor poolsides, while the Base Model’s pre-set dimensions simplify quick residential installations.

Frequently asked questions

  • Which stainless steel spiral staircase model is best for small residential spaces?

  • How do I maintain a stainless steel spiral staircase?

  • Stainless Steel vs Glass Railings: Which is better for modern villas?

  • Can I customize the Stainless Steel Central Stringer Kit for commercial buildings?

  • Are spiral stairs safe for outdoor applications?

  • What’s the difference between spiral and straight stairs in villas?

  • Is the steel-wood composite stair material eco-friendly?

  • Are your spiral stair kits compliant with safety regulations?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Spiral StairsResidential, commercial spaces with limited floor areaSpace Efficiency: 30% (Industry Standard) ▲ 40% (Our Advanced) (ISO 1910-1: Compares compactness vs. straight stairs)
Corrosion Resistance: Passes ASTM A240 (1000+ hours salt spray test)		Maximizes vertical space, modern aesthetic appealNarrow treads may restrict movement; limited headroom at turns
Straight StairsHigh-traffic commercial buildingsLoad Capacity: 1000 lbs (Industry) ▲ 1200 lbs (Our Advanced) (ASTM E1301)
Structural Rigidity: 98% deflection reduction (ISO 10549)		High durability and stability for heavy useRequires significant floor space; less design flexibility
Cantilever StairsModern homes, open-plan officesOverhang Length: 4ft (Base) ▲ 6ft (Advanced) (ASTM A53 for steel)
Aesthetic Flexibility: 80% less visible support (ISO 1910-1)		Sleek, minimalist design with minimal structural intrusionHigher material costs; Base models may have lower load capacity
Glass StairsLuxury homes, showroomsClarity: 99% light transmission (ASTM C1003)
Safety: 2000 lbs impact resistance (ASTM E23) ▲ 2500 lbs (Advanced)		Enhances natural light and premium aestheticsHigh cost; requires frequent cleaning and UV protection
Steel-Wood Hybrid StairsEco-friendly residential projectsSustainability: 60% (Base) ▲ 80% recycled content (Advanced) (ISO 14021)
Aesthetic: 70% natural wood finish (ASTM D523)		Combines durability of steel with warmth of woodHigher maintenance for wood components; Base version has lower recycled content
Arc StairsHotels, public venuesCurve Radius: 6ft (Industry) ▲ 5ft (Our Advanced) (ASTM F1296)
Flow: 45% smoother transition (ISO 1910-1)		Ergonomic design for public spaces; visually strikingComplex installation; higher cost due to custom curves

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