Product Overview
304 Stainless Steel Welded Grating is an industrial-grade metal grating manufactured by joining stainless steel bearing bars and cross bars through high-precision, automatic resistance welding technology. Fabricated from premium SUS304 / UNS S30400 stainless steel, it delivers superior corrosion resistance, structural strength, long service life, and exceptional hygienic performance.
Designed to outperform traditional galvanized carbon steel gratings in harsh environments, 304 stainless steel welded grating provides outstanding resistance to moisture, rust, acids, alkalis, and industrial chemicals. It is the premier choice for sectors where cleanliness, structural safety, and long-term durability are critical.
Customized, project-specific 304 stainless steel welded grating solutions are available for global markets, offering a wide range of bearing bar profiles, pitch sizes, surface treatments, and panel dimensions manufactured to meet international engineering standards.
Technical Specifications & Compliance
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Product Name |
304 Stainless Steel Welded Grating |
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Material Grade |
Premium SUS304 / UNS S30400 / 1.4301 Stainless Steel |
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Manufacturing Standards |
Compliant with ISO 9001, ASTM A240, BS4592, ANSI/NAAMM (MBG 531/532) |
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Manufacturing Process |
Automatic Resistance Pressure Welding |
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Bearing Bar Type |
Plain Flat Bar / Serrated Flat Bar (Anti-Slip) |
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Cross Bar Type |
Smooth Round Bar / Twisted Square Bar |
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Bearing Bar Thickness |
2mm - 10mm |
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Bearing Bar Depth/Height |
20mm - 100mm |
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Mesh Spacing (Pitch) |
Customized (Standard: 30mm, 40mm, 50mm bearing bar pitch / 50mm, 100mm cross bar pitch) |
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Surface Finish |
Mill Finish / Mechanical Polish / Electrolytic Polishing / Acid Pickling & Passivation |
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Quality Certification |
Mill Test Certificate (MTC EN 10204 3.1) provided with every shipment |
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Applications |
Heavy-duty Platforms, Walkways, Stair Treads, Trench & Drain Covers, Cleanroom Flooring |
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Common Specifications & Load Capacity Guidance
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Bearing Bar Size (Depth x Thickness) |
Bearing Bar Pitch |
Cross Bar Pitch |
Typical Application Field |
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25 x 3 mm |
30 mm |
100 mm |
Light Pedestrian Walkways & Drain Covers |
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30 x 3 mm |
30 mm |
100 mm |
Standard Industrial Walkways & Platforms |
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32 x 5 mm |
40 mm |
100 mm |
Heavy-Duty Industrial Platforms |
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40 x 5 mm |
40 mm |
100 mm |
Heavy-Duty Equipment Supports & Trench Covers |
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50 x 5 mm |
50 mm |
100 mm |
High-Span & Concentrated Load Areas |
Surface Treatments & Corrosion Protection
Mill Finish:
The natural stainless steel finish formed during hot/cold rolling. Provides solid corrosion resistance and a standard clean industrial appearance. Ideal for general structural applications.
Mechanically Polished Finish:
Surface is mechanically ground and polished to create a bright, smooth finish. Improves aesthetic appeal and reduces surface roughness for easier washing.
Electrolytic Polishing (Electro-polishing):
Removes surface iron contamination, microscopic burrs, and peaks, producing an ultra-smooth finish. Maximizes corrosion resistance and cleanability, specifically required in pharmaceutical and food-grade cleanrooms.
Acid Pickling & Passivation:
Chemical treatment that restores the protective chromium oxide film after welding. Ensures compliance with ASTM B117 salt spray resistance standards (48+ hours test passed).
Manufacturing & Quality Control Process
Raw Material Testing: Chemical composition analysis (Spectrometer test) and tensile strength verification on incoming SUS304 steel bars to guarantee material authenticity.
Precision Cutting: Automated shearing and cutting of flat bars and cross rods according to approved engineering drawings.
Automated Resistance Welding: High-power electro-resistance welding achieves 100% weld integrity at bar intersections with zero cold welding or missing penetration.
Surface Treatment & Passivation: Panels undergo grinding, polishing, or electro-polishing treatments followed by thorough chemical cleaning to enhance surface stability.
Quality Inspection & Tolerance Check: Every batch undergoes strict dimensional check, weld strength penetration test, flatness tolerance inspection, and surface quality audit.
Documentation & Packaging: Full traceability with Mill Test Certificate (MTC EN 10204 3.1) attached to export-grade bundled and wrapped pallets.
Key Product Features & Benefits
Exceptional Corrosion Resistance: High chromium and nickel content prevents oxidation, rust, and degradation in high-humidity, chemical, or salt-spray environments.
High Strength-to-Weight Ratio: Engineered welded structure provides high structural integrity and load capacity while optimizing total weight.
Hygienic & Easy to Sanitize: Smooth stainless steel surface prevents bacterial accumulation and dirt buildup, allowing quick washdowns with high-pressure water or chemical cleaners.
Enhanced Safety (Anti-Slip): Available with serrated bearing bars to increase friction and operator safety in wet, oily, or icy operating conditions.
Low Lifetime Cost: Exceptional durability and minimal maintenance requirements ensure a significantly lower total cost of ownership compared to carbon steel.
Applications Across Global Industries
Food Processing & Beverage Plants: Production line platforms, drainage covers, processing equipment supports, and sanitation walkways.
Pharmaceutical & Cleanrooms: Sterile room flooring, equipment access platforms, and sanitary trench covers.
Chemical & Petrochemical Facilities: Corrosion-resistant operation decks, walkways, and catwalks exposed to chemical vapors or drips.
Water & Wastewater Treatment: Maintenance walkways, trench grates, scum trough covers, and pump station platforms.
Marine, Coastal & Offshore: Platforms, stair treads, and walkways resistant to high humidity and marine environment exposure.
Architectural & Commercial Projects: Building facades, sunshades, decorative floor grating, and modern stair treads.
Manufacturing & Export Advantages
Proven Manufacturing Expertise: Specialized manufacturer and exporter of wire mesh, industrial steel grating, and stainless steel products serving contractors and distributors worldwide.
Strict Quality Assurance: Complete quality management system complying with ISO 9001 standards, ensuring full material traceability from raw steel to finished panels.
Custom OEM/ODM Engineering: Ability to fabricate custom panel sizes, cutouts, toe plates, locking clips, and complex shapes based on project drawings.
Fast Delivery & Global Logistics: Streamlined export operations offering standard panel lead times of 15-20 days, complete with seaworthy packaging for container shipping.
Direct Factory Value: Competitive manufacturer pricing combined with dedicated technical sales support for international tenders.
Packaging & Logistics
Export Standard Packaging: Secure steel strapping, heavy-duty wooden/steel pallets, waterproof plastic wrapping, and corner protectors to prevent transit damage.
Container Shipping Support: FCL (Full Container Load) and LCL (Less than Container Load) shipments handled with sea freight, air freight, and door-to-door logistics assistance.
FAQ
Q: What is 304 Stainless Steel Welded Grating?
A: It is a rigid, structural metal grating panel manufactured by resistance-welding SUS304 stainless steel bearing bars and cross rods together at high temperature and pressure, offering superior strength and corrosion resistance.
Q: What is the difference between 304 Stainless Steel Grating and Galvanized Carbon Steel Grating?
A: 304 stainless steel grating provides vastly superior corrosion resistance, longer service life, better high-temperature tolerance, and higher hygiene levels without relying on a surface zinc coating that can wear off over time.
Q: Do you provide Mill Test Certificates (MTC) and standard compliance documentation?
A: Yes. Every shipment comes with a certified Mill Test Certificate (MTC in accordance with EN 10204 3.1) verifying chemical composition, tensile strength, and manufacturing compliance.
Q: Can grating panels be fabricated according to engineering CAD drawings?
A: Absolutely. Custom engineering drawings are accepted and panels can be supplied with specific dimensions, perimeter framing, cutouts for pipes/columns, and welded toe plates.
Q: Is 304 stainless steel grating suitable for marine environments?
A: 304 stainless steel performs exceptionally well in humid and mild marine conditions. For severe sea-water immersion or direct exposure to harsh marine splash zones, 316 / 316L Stainless Steel Welded Grating can also be supplied upon request.
Q: What surface finish is recommended for food processing or pharmaceutical plants?
A: Electrolytic Polishing (Electro-polishing) or Mechanically Polished Finish is highly recommended as it minimizes surface roughness and burrs, making cleaning effortless and maintaining strict sanitary standards.
Q: How do I request an accurate quotation?
A: Please provide the following project details:
Material grade (SUS304)
Bearing bar size (Depth x Thickness) and profile (Plain or Serrated)
Mesh spacing / Pitch (Bearing bar pitch and cross bar pitch)
Panel dimensions (Length x Width) and quantity
Surface finish requirement
Project engineering drawings (if cutouts/framing are needed)
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