Overview
Designed with clean geometric lines for modern architectural spaces, the Modern Square Steel Stair Handrail (35.4" / 90cm) combines contemporary minimalism with heavy-duty safety assistance. Fabricated from precision-welded 30mm x 30mm (1.18" x 1.18") structural square carbon steel tubing and finished in a corrosion-resistant electrostatic matte black powder coat, this versatile safety railing system provides essential support along indoor staircases, outdoor porches, corridors, and commercial transitions. Available in straight right-angle, curved return, and floor-mounted baluster configurations, it delivers an ergonomic, confident grip for seniors, children, and visitors while elevating interior decor.

Key Features

• Modern Minimalist Square Profile: Clean 30mm x 30mm (1.18" x 1.18") architectural square steel tubing creates a sleek industrial aesthetic that complements modern lofts, townhomes, and commercial offices.
• Standard 35.4" (90cm) Proportions: Optimized length spans 1 to 3 steps or serves as a dedicated intermediate safety grab bar along landings, hallways, and bathroom walls.
• Multiple Mounting Configurations: Offered in standard right-angle wall-mount, ergonomic smooth-bend return, corner connector, and dual-flange vertical floor-mount baluster styles.
• Robust 4-Hole Base Flanges: Solid 60mm x 60mm (2.36" x 2.36") square steel mounting plates with 4 pre-drilled anchoring points ensure firm wall or floor attachment, supporting over 440 lbs (200 kg).
• Safe 2.76" (7cm) Wall Clearance: Engineered stand-off distance provides ample hand clearance to grasp the rail securely without scraping knuckles against drywall, brick, or tile.
• Durable Weatherproof Powder Coating: High-adhesion electrostatic matte black finish resists scratches, moisture, corrosion, and wear in both indoor living spaces and exterior covered porches.

Technical Specifications

• Product Type: Square Metal Stair Handrail & Baluster Post
• Length / Height: 90 cm / 35.4 in
• Tube Dimensions: 30 mm x 30 mm (1.18 in x 1.18 in) square steel tubing
• Wall Standoff Distance: 7 cm / 2.76 in
• Mounting Flange Size: 6 cm x 6 cm (2.36 in x 2.36 in) square plates (4 pre-drilled holes)
• Material: Heavy-gauge structural carbon steel / wrought iron
• Finish: Electrostatic matte black powder coat
• Weight Capacity: Rated up to 440 lbs (200 kg)
• Available Styles: Right-Angle Wall Mount, Conjoined Curved Return, Corner Mount, Vertical Floor Baluster
• Applicable Surfaces: Concrete walls, brick masonry, wood studs, drywall with backer, tiled bathroom walls

Wholesale & OEM Capabilities
Ningbo Dimon Metal Products Co., Ltd. is a factory-direct metal hardware manufacturer providing custom architectural solutions for builders, interior designers, and wholesale distributors:

• Custom Modular Lengths: Custom fabricated lengths from 1 ft up to 10+ ft with continuous joining hardware for multi-story stairwells.
• Custom Architectural Finishes: Available in matte black, satin white, anthracite grey, brushed stainless steel, or custom architectural RAL powder shades.
• Complete Fastener Packs: Tailored mounting hardware packages including concrete heavy-duty anchors, wood lag screws, and tile drill-guide kits.
• Export Packaging & Logistics: Protected in individual bubble sleeves and heavy-duty 5-ply export master cartons, suitable for container shipment from Ningbo Port (FOB / CIF / DDP).