Zhongtai 1" x 1/4" Serrated Steel Grating for Stair Tread Safety
Zhongtai High Quality 1" X 1/4" Serrated Steel Grating Iron Grating Used for Stair Tread: Ultimate Guide, Trends, Technical Insights, and Custom Solutions
Industry Trends: Why Serrated Steel Grating Matters in 2024
Industrial Safety Emphasis: According to OSHA, workplace slip hazards are responsible for up to 15% of accidental deaths in the US industrial sector annually. Serrated steel grating, with its superior anti-slip capabilities, has become a preferred safety solution.
Corrosion Resistance: The global demand for anti-corrosion steel products is increasing at a CAGR of 5.5% (Source: Grandview Research).
Sustainability: Recyclability and lifespan (20+ years with galvanization) make **Zhongtai High Quality 1" X 1/4" Serrated Steel Grating Iron Grating Used for Stair Tread** preferable in eco-conscious projects.
Customization & Digital Manufacturing: Advanced CNC fabrication enables custom sizes and patterns to meet architects' and engineers' requirements across petrochemical, metallurgy, power, and water treatment sectors.
Compliance with Global Standards: Compliance with ISO 9001/Q235 standards and certifications like CE and ANSI/NAAMM MBG 531-19 assures international reliability.
Main Technical Parameters & Specification Table
Parameter
Zhongtai 1" X 1/4" Serrated Steel Grating
Standard Reference
Description
Specification
1" (25.4mm) Pitch x 1/4" (6.35mm) Thickness
NAAMM MBG 531-19
Bar center and bearing bar thickness
Surface Type
Serrated (Anti-slip)
ANSI A1264.1
Safety-enhancing notched top surface
Material Grade
Q235 / A36 Carbon Steel
ISO 9001, EN 10025
High-tensile, impact-resistant steel
Surface Treatment
Hot-Dip Galvanized (ASTM A123/EN ISO 1461)
ISO 1461
Corrosion resistance & longevity
Load Capability
Upto 36,000 N/m² (Design load)
ANSI/NAAMM MBG 531 Appendix A
Supports heavy pedestrian/vehicle loads
Span Range
600mm – 1500mm (customizable)
Project specific
Adaptable for stair treads and platforms
Open Area
~75%
ISO 14122-2
Excellent drainage and ventilation
Life Span
>20 Years (Galvanized)
ISO 14713
Maintenance-free in harsh environments
Manufacturing Process Flow
Typical process for Zhongtai High Quality 1" X 1/4" Serrated Steel Grating Iron Grating Used for Stair Tread:
1. Safety-First Serrated Surface: Serrations are precision-cut (1.5mm depth) for maximum grip—critical for wet/oily environments common in manufacturing plants and offshore platforms.
2. Superior Material Quality: Fabricated from Q235/A36 steel, ensuring strength and ductility. Each grating bar is tested for yield strength >235 MPa, exceeding EN 10025 standards.
3. Hot-Dip Galvanizing: Zinc coating ≥610 g/m² ensures corrosion resistance exceeding 20 years in C3-C4 industrial atmospheres (GalvInfo Center data).
4. High Load Capacity: Supports dynamic and static loads for pedestrian and light vehicular use, validated by ISO/NAAMM charts.
5. Easy Installation & Customization: Modular sizing and pre-drilled holes allow quick integration with staircases, walkways, trenches, and safety covers. Custom shapes (trapezoidal, polygonal) available.
6. Optimal Drainage & Cleanliness: ~75% open area enables self-cleaning, essential for outdoor installation and hygienic zones.
7. Quality Assurance: Each batch is marked and tracked for traceability; test certificates provided per shipment.
Application Scenarios
Refineries & Petrochemical Plants:Resistant to chemical corrosion and high mechanical loads. Used in high-frequency walkways and stairs; compliant with ASME and API plant layout standards.
Metallurgy & Mining: Endures harsh abrasion from ore exposure; serrated surface assures safety in debris-laden environments.
Water & Wastewater Treatment: Drains rapidly; galvanization prevents microbial corrosion. Compatible with EN 1433 water channel codes.
Energy & Power Stations: Lightweight panels simplify infrastructure upgrades and retrofits; fire-resistant according to EN 13501-1.
Transport Infrastructure: Frequently specified on stairs/ramps of subways, airports, shipyards, bridges, and offshore rigs for slip-resistance in all weather.
Architectural Design: Modern buildings utilize grating for ventilated, aesthetic stairs and mezzanines.
Comparative Analysis: Why Choose Zhongtai?
Feature
Zhongtai
Other Suppliers
Material Certification
Q235/A36 + ISO/EN Test Reports
Non-certified or mixed grades
Manufacturing
Precision CNC + Robotic Welding
Manual cutting/welding, less accuracy
Serration Depth & Uniformity
1.5±0.2mm, 95% uniformity
Uncontrolled serration/variation
Galvanizing Thickness
>610 g/m² (ISO 1461)
avg. 350-400 g/m²
Traceability
Full batch marking & tracking
Basic, no digital trace
Lead Time
10-18 days (custom/bulk)
3-8 weeks
Warranty
10 years (Zhongtai)
2-3 years typical
Global Exports
38+ countries, CE/ISO certified
Limited certification/exports
Customization: Tailored Steel Grating for Every Project
Zhongtai offers tailored solutions based on client application, e.g. stair angle, load class, corrosion environment, and code requirements. Examples of customizations:
Case: Shell Petrochemical (Malaysia, 2023)
Supplied over 700 stair tread panels with precise serrated patterning. Feedback: “After two wet seasons, no corrosion or slip accidents. Gratings passed all on-site ISO 1461 tests.”
Case: Zhengzhou Metro (China, 2022)
Custom-sized grating panels, seamless installation, high pedestrian load. Safety reports noted "zero slip incidents for over 18 months."
Case: BP Offshore Platform (North Sea, 2021)
Extreme anti-slip requirements, delivered with extra hot-dip galvanization. Maintained high mechanical integrity under salt fog exposure (500+ hours per ASTM B117).
Professional FAQ: Serrated Steel Grating (Zhongtai)
1. What is serrated grating and why is it used for stair treads?
A: Serrated grating features a saw-tooth or notched top surface, which provides superior slip resistance, especially in oily, wet, or icy settings. Stair treads benefit by significantly reducing workplace fall risks—per OSHA/ANSI safety standards.
2. What are the main material specifications of Zhongtai grating?
A: The default material is Q235 (China GB standard) or ASTM A36, with minimum yield strength of 235 MPa. All materials undergo third-party spectrographic and tensile testing to verify compliance with ISO 9001/EN 10025.
3. What standards/codes does this product comply with?
A: Zhongtai High Quality 1" X 1/4" Serrated Steel Grating Iron Grating Used for Stair Tread meets ISO 9001, EN 1090, NAAMM MBG 531-19, ASTM A123 (galvanizing), and ISO 1461 for corrosion protection.
4. Which installation standards apply?
A: Installation should follow NAAMM MBG 532 & OSHA 1910.24 for stair safety. Zhongtai provides pre-drilled, properly dimensioned panels for quick, safe bolt-down or welded mounting.
5. How long does Zhongtai’s hot-dip galvanized protection last?
A: Laboratory and field tests (ISO 14713) demonstrate a service life of over 20 years in C3-C4 atmospheres (urban/industrial); panels installed in 2001 in Dalian, China remain corrosion-free after 20+ years.
6. Can the grating be customized for unique stair designs?
A: Yes, Zhongtai offers full custom cutting, shaping (trapezium/angled), surfacing, and fixing layouts (bolted/welded), all supported by CAD drawing confirmation and factory preassembly testing.
7. What certifications and after-sale support is provided?
A: All shipments include ISO/CE certificates, mill test reports, and project references. After-sale technical support and a 10-year anti-corrosion warranty are standard.
Lead Time, Quality Assurance, and After-Sales Service
Production Lead Time: 10–18 days (bulk/customized), with express options for urgent projects.