Contact Us for More Galvanized Steel Stair Handrail Specifications and Dimensions.
Factory Price GB Standard Q235B Steel Hot-Dip Galvanized (HDG) Outdoor Stair Railing Handrail
| Product Attribute | Core Specifications |
| Item Name | HDG Outdoor Steel Stair Handrail, ASTM A36 grade |
| Base Material | High-grade carbon steel; ASTM A36, equal to Q235B / S235JR EN 10025 |
| Surface Finish | Hot-dip galvanizing, meets ASTM A123 & EN ISO 1461 |
| Zinc Coating | Min 610 g/m², average 85 μm; heavy galvanizing customizable |
| Railing Parts | Top rail, handrail, support posts, balusters, base plates |
| Tube Sizes | Round pipe: Φ42.4 / Φ48.3mm; Square tube: 40×40 / 50×50mm; custom profiles acceptable |
| Tube Wall Thickness | 2.0 / 2.5 / 3.0 / 3.5 / 4.0 mm |
| Standard Heights | 900/1000/1050/1100/1200mm, compliant with OSHA & IBC |
| Assembly Type | Full bolted modular design (no field welding); sleeve-screw connections |
| Fabrication Works | Cutting, laser punching, bending, welding, end sealing |
| Service Lifespan | 20–50 years, varies by coastal / industrial / inland environments |
| Safety Standards | OSHA 1910.29, IBC, ADA accessibility codes |
| Quality Documents | EN 10204 3.1 mill test certificates; SGS / BV third-party inspection available |
| Typical Uses | Industrial platforms, outdoor emergency stairs, mining, marine & oil-gas facilities, temporary worker camps |
| Export Packing | Bubble film & woven bag wrapping, secured on steel pallets for full container loading |
Built to Last Outdoors: Our advanced surface treatment keeps rust at bay, delivering long-term durability even in harsh, exposed conditions.
Rock-Solid Stability: Strong welds and secure connections mean a steady structure you can count on, with safety built right in.
Tough & Load-Ready: Made from high-grade steel, these stairs stand up to heavy use and impacts, with a robust load capacity for busy worksites.
| Specifications | Extemal Diameter of Ball | Extemal Diameter of Column | Extemal Diameter of Handrail | Extemal Diameter of Rail |
| Standard | 76(85) | 48.0(51.0) | 42.3(51.0) | 33.5(38.1) |
| Economical | 66(70) | 42.3(38.1) | 33.5(38.1) | 26.8(32.0) |
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We provide fully customizable hot-dip galvanized steel stair handrails suitable for residential, commercial, industrial and infrastructure projects. Crafted from high-quality mild steel with a minimum 350g/m² zinc coating, these railings deliver strong rust resistance and long-term durability for both indoor and outdoor use.
All core parameters can be tailored to site requirements, including railing height, pipe diameter, wall thickness, panel style and installation methods. The galvanized finish can also follow ASTM A123 or ISO 1461 standards to match project specifications, fully complying with international building codes.
Precision fabrication and strict welding quality control ensure excellent structural stability and overall safety. Featuring high rigidity and nearly maintenance-free performance, our galvanized handrails are a reliable long-term solution for all types of building access systems.
Residential Buildings
Ideal for family staircases, balcony enclosures, terrace barriers and daily safety railing systems.
Commercial & Office Buildings
Widely applied in building lobbies, internal stairwells, emergency exit passages and mezzanine guardrails.
Industrial Facilities
Perfect for factory platforms, workshop walkways, warehouse passages and equipment access stairs.
Public & Municipal Projects
Suitable for schools, parks, airports, railway stations and other public infrastructure safety facilities.
Coastal & Marine Works
Well-adapted to humid and salt-intensive environments, including piers, docks and waterfront stair structures.
15+ Years Professional Steel Export Experience
We bring decades of mature manufacturing and international trade experience, delivering stable, trustworthy steel products to global customers.
Diversified Product Options
A full selection of steel grades, tube thicknesses, dimensions and surface finishes are available to fit different project demands.
Professional Custom Fabrication
We offer one-stop custom processing including cutting, bending, punching and welding, supporting fully tailored made-to-order solutions.
Global Market Coverage
Our products are widely exported to Southeast Asia, the Middle East, Europe, South America and Africa, with rich overseas project experience.
Complete Pre-sale & After-sale Support
Fast inquiry response, professional technical guidance and reliable after-sales service ensure smooth cooperation for every order.
Over 5,000 tons of stock in stock, with a wide variety of sizes
Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
We adopt standardized export packaging and strict shipping solutions to fully protect the HDG surface (≥350g/m² zinc coating) of steel stair handrails, avoiding scratches, deformation and damage during transit.
Packaging Standards
All handrails are wrapped with protective film to guard the galvanized surface. Products are firmly fixed on premium wooden pallets or crates, with corner padding and buffer protection for key parts. Custom packaging is available for oversized and special-shaped products to adapt to different shipping scenarios.
Delivery Solutions
We support flexible shipping methods including sea FCL/LCL and air freight for urgent orders. All goods are scientifically stacked and reinforced for safe transportation. We provide whole-process shipment tracking and support pre-shipment inspection, offering stable global delivery service for overseas distributors and construction projects.
Stable cooperation with shipping companies such as MSK, MSC, COSCO efficiently logistics service chain, logistics service chain are we to your satisfaction.
We follow the standards of quality management system ISO9001 in all procedure, and have strict control from packaging material purchase to transport vehicle scheduling.
1. Raw Material
High strength carbon steel with hot-dip galvanized finish for stable structure and anti-rust performance.
2. Zinc Coating Weight
Minimum 350g/m² zinc layer, durable for indoor and outdoor scenarios.
3. Customization Service
Adjust railing height, pipe size, wall thickness, panel style and installation structure per project demands.
4. Outdoor Application
Thick HDG coating adapts to exterior stairs, balconies, industrial platforms and coastal areas.
5. Export Packaging
Wrapped with protective film, loaded on wooden pallets/crates with corner cushions; custom packaging for special orders.
6. Lead Time
20–35 days for sea FCL; faster LCL & air freight for small urgent orders.
7. Easy Installation
Pre-drilled holes and tailored mounting structures for quick assembly.
8. Maintenance Tips
Minimal upkeep needed; regular simple cleaning keeps anti-corrosion performance intact.
9. Export Certificates
Supply spec sheets, test reports and full certification documents for customs and project inspection.
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