Painted Steel Bar Grating

Custom Color-Coded Industrial Flooring Solutions

1. Product Overview

Our painted steel bar grating is a versatile industrial flooring solution designed for projects where color identification, safety visibility, or budget-efficiency are key priorities. Manufactured from high-quality carbon steel, we offer both Forge-Welded and Manual Welded structures to match your load requirements. After precision fabrication—including all custom cut-outs and edge banding—the panels are treated with a heavy-duty industrial primer and topcoat. This “Ready-to-Install” system is delivered with unique ID numbering based on your CAD drawings, ensuring a perfect fit for mezzanine floors, safety platforms, and equipment grilles.

2. Technical Parameters (Industrial Standards)

Category	Item	Specifications & Range (Fully Customizable)	Technical Notes
Material	Base Metal	ASTM A36, Q235B, Q355B, S275JR	Carbon steel only; optimized for high paint adhesion.
Bearing Bar (H)	Bar Depth	20mm – 150mm	30mm and 32mm are standard for industrial walkways.
Bearing Bar (T)	Bar Thickness	3mm, 5mm, 6mm, 8mm	5mm (3/16″) provides heavy-duty durability.
Cross Bar	Lateral Support	Twisted Square Rod / Round Bar / Flat Bar	Twisted rods enhance the mechanical bond of the paint.
Mesh Pitch	Center-to-Center	30×100, 30×50, 33×33, 40x100mm（or custom）	30x100mm is the most cost-effective grid layout.
Surface	Profile Type	Plain (Smooth) or Serrated (S)	Serrated bars are recommended for high-traction safety.
Fabrication	Welding Method	Forge-Welded / Manual Welded	Manual welding is used for bespoke shapes and thick bars.
Finish	Coating Type	Industrial Primer + Anti-Corrosive Topcoat	Available in Safety Yellow, Black, Red, or Custom RAL.

 

Engineering Notes:

1.Standards Compliance: Manufactured to meet ANSI/NAAMM (MBG 531) standards, ensuring predictable load-bearing performance.

2.Structural Fusion: We combine automated Forge-Welding with Manual CO2 Welding to ensure deep penetration at all joints, creating a rigid structure that resists vibration.

3.Coating Application: Painting is performed post-fabrication. This ensures that all weld points and cut edges are fully sealed, preventing “under-film” corrosion at the joints.

4.Design Optimization: Our engineering team analyzes your span requirements to ensure the chosen bar depth maintains a safe deflection ratio (L/200).

 

3. Product Advantages

1.Full-Scale Deep Customization: We build exactly to your CAD drawings. Our manual welding team handles complex notches, circular cut-outs, and irregular angles, ensuring the grating fits perfectly around your machinery without on-site cutting.

2.Safety Visibility & Color Coding: Painted finishes allow for immediate visual safety cues. Use Safety Yellow for edges, Red for hazardous zones, or Black for standard walkways to improve workplace safety and organization.

3.Dual Welding Flexibility: We utilize automated machines for large-scale runs and skilled manual welding for heavy-gauge bars (>6mm) or bespoke banding, ensuring maximum structural integrity across all panel shapes.

4.Economical & Aesthetic Choice: Painted grating offers a lower initial cost compared to galvanizing and provides a cleaner, more uniform appearance for indoor mezzanines and commercial display areas.

4. Applications & Engineering Scenarios

1.Warehouse Mezzanines: Color-coded walking paths for personnel and AGVs, designed for high-flatness and easy installation.

2.Machine Guards & Safety Platforms: High-visibility yellow grating used around moving machinery to comply with industrial safety standards.

3.Indoor Drainage & Trench Covers: Cost-effective solutions for dry processing plants and indoor facilities where moisture is controlled.

4.Custom Equipment Mounts: Precision-cut panels with factory-welded kick-plates designed to fit around complex pumping or power-gen equipment.

5. Quality Control (Practical & Reliable)

1.Drawing Alignment Audit: Every panel is verified against the pre-production CAD layout to ensure all custom notches and dimensions are 100% accurate.

2.Paint Adhesion & Finish Check: 100% visual inspection to ensure uniform coating thickness and zero “holidays” or missed spots on weld beads and edges.

3.Weld Integrity Testing: Systematic checks of weld fusion to ensure the structure remains stable under dynamic loads and transit.

4.Final ID Coding Check: Verification that every panel is clearly stamped with its unique ID number, matching the master layout map for the customer.

 

 

 

6. Customization & Engineering Services

1.CAD Layout & Panel ID System: Before production, we create a secondary CAD layout from your drawings. Each panel is assigned a unique ID number (e.g., P-01, P-02).

2.“Plug-and-Play” Installation: Your shipment includes a detailed Layout Map. Installation crews simply place panels by their ID numbers, eliminating on-site measuring and cutting.

3.Cut-outs & Optional Kick-plates: We perform all complex cutting in-house. Upon request, we weld 100mm-150mm Kick-plates (Toe-boards) around openings. This customization reinforces the edges and prevents objects from falling through.

4.Custom Color Matching: We can match specific RAL or Pantone colors to align with your corporate branding or specific plant safety protocols.

7. FAQ

Q: Why choose Painted Steel Grating over Galvanized?

A: Painting is ideal for indoor use where color coding is needed for safety or branding. It is more budget-friendly than galvanizing and offers a smoother, more vibrant finish for architectural and commercial projects.

Q: Can the paint withstand heavy foot traffic?

A: We use industrial-grade anti-corrosive coatings designed for pedestrian and light-duty industrial use. For extremely high-traffic or abrasive environments, we recommend specifying a serrated surface to protect the coating and provide grip.

Q: Does the paint protect against rust?

A: The paint acts as a barrier against atmospheric moisture. Because we paint after all welding and cutting is done, every edge is sealed. However, for outdoor or wet environments, Hot-Dip Galvanizing remains the superior choice for long-term rust prevention.

Q: How does the ID numbering help my project?

A: It turns a complex installation into a simple task. By matching the ID on the grating to our CAD map, your workers save hours of time and avoid the risk of installing panels in the wrong orientation.

 

In summary, Painted Steel Bar Grating delivers affordable customization, superior safety through color coding, and easy plug-and-play installation for indoor applications like warehouse mezzanines, machine guards, safety platforms, and equipment mounts. Its durable painted finish, precise fabrication, and unique panel ID system ensure visual organization, workplace safety, and efficient deployment in controlled industrial and commercial environments.