Steel Bar Grating

Additional information

Material Options	Mild Steel (Carbon Steel), Stainless Steel (201/304/316)
Bearing Bar Size	25×3mm, 30 ×3mm, 40×3mm, 40×4mm, 40×5mm, 50×5mm (Custom sizes available).
Bearing Bar Spacing	30mm, 40mm, 50mm.
Cross Bar Spacing	50mm, 100mm.
Surface Treatment	Hot-Dip Galvanized (HDG), Powder Coated, Painted, or Untreated (Mill Finish).
Surface Profile	Plain (Smooth), Serrated (Non-slip), or I-Bar.
Panel Dimensions	Standard Sizes: 1000 ×1000mm or 1000 ×2000mm or 1000 × 5800mm(Custom sizes available).
Loading Capacity	Light Duty (Pedestrian) or Heavy Duty (Vehicle/Truck traffic).
Applications	Industrial platforms, stair treads, drainage trench covers, walkway flooring, and mezzanine decking.

Please email us with your required specifications based on the above parameters. We will provide customized quotes and manufacturing according to your requirements.

E-mail： zhen@gratingpro.com

Industrial Steel Bar Grating Manufacturer & Global Supplier

High-performance industrial steel bar grating engineered for maximum load-bearing capacity in platforms, walkways, and drainage systems. Our products are manufactured in strict compliance with ASTM A123, ANSI/NAAMM (MBG531), and BS 4592 international engineering standards, ensuring structural safety in the most demanding environments.

Factory Direct: Competitive wholesale pricing from China’s production base.
Technical Support: Free CAD drawings and load-bearing calculations.
Reliable Export: Proven logistics experience serving industrial projects worldwide.

Steel Bar Grating

Steel bar grating is a precision-engineered open grid system manufactured from load-bearing flat bars and cross bars. It is widely used in industrial flooring, platforms, trench covers, and heavy-duty structures where strength, drainage, and durability are critical.

What Is Steel Bar Grating?

Steel bar grating consists of parallel bearing bars that carry the load, and perpendicular cross bars that provide rigidity and stability.

Bearing Bar: Main structural component
Cross Bar: Provides stability
Spacing: Determines load capacity

Grating Model Identification (Example: G325/30/100)

G325: 32 mm height × 5 mm thickness
30: Bearing bar spacing
100: Cross bar spacing

Common Specifications

Model	Bearing Bar	Pitch	Cross Bar	Surface
G253/30/100	25×3	30	100	Galvanized
G325/30/100	32×5	30	100	Hot Dip Galvanized
G405/30/100	40×5	30	100	Heavy Duty

Load Table (Reference)

Bearing Bar	Span	Load Capacity	Deflection
25×3 mm	1000 mm	~300 kg/m²	L/200
32×5 mm	1000 mm	~700 kg/m²	L/200
40×5 mm	1000 mm	~1000+ kg/m²	L/200

Types of Steel Bar Grating

Applications

Industrial platforms
Drainage trench covers
Steel structure flooring
Oil & gas plants

Materials & Standards

Material: Q235 / ASTM A36
Surface: Hot-dip galvanized (ASTM A123)
Standard: ANSI/NAAMM MBG531

Key Advantages

High load capacity
Excellent drainage
Anti-slip options
Long service life

Custom Fabrication

Custom sizes & shapes
Cut-outs and edging
Load-specific design

Stringent Quality Inspection Process

Reliability is our priority. Every batch of galvanized steel grating undergoes comprehensive inspection to ensure consistent performance:

Precision Measurement: All pitch, height, and thickness are verified against technical drawings.
Galvanization Testing: Zinc coating thickness is inspected to ensure long-term corrosion resistance.
Material Certification: Mill Test Reports (MTR) provided for all raw materials.
Third-Party Inspection: SGS, BV, or other independent inspections supported before shipment.

Partner with a Trusted Grating Specialist

Need professional guidance on load calculations or project drawings? We Steel grating manufacturer is ready to support your steel grating requirements.

Request a Technical Quote

Q: What is the smallest hole you can produce?
A: Typical micro perforation starts at 0.3 mm; for smaller holes we recommend chemical etching — contact us with your exact spec.

Q: Do you offer custom patterns and prototypes?
A: Yes. We do prototypes with no MOQ. Send drawings or sample references to info@perfsheet.com.

Q: Can you cut panels to irregular shapes?
A: Yes. Provide a CAD file or drawing; laser or waterjet processes are suitable for complex outlines while preserving micro hole integrity.

Q: How do you handle edge finishing?
A: We can supply straight-cut edges, folded profiles, or hemmed edges. Hemming improves safety and aesthetics for visible edges.

Q: Can you produce curved panels?
A: Some materials can be roll-formed or pressed into curved shapes. Send radius and panel size; we’ll advise on manufacturability.

Q: Can you provide material certificates?
A: Yes — material certificates are included with shipments and we support third-party testing.

Micro perforated metal sheet manufacturing video

After perforation, especially for plates with very dense hole patterns, the perforated metal sheets will experience significant deformation. We perform flattening treatment after completing all perforation processes. Below is the video of flattening perforated metal sheets:

After the leveling process, our perforated metal sheets can be precisely laser-cut into any custom shape as required. Below is a production video demonstrating the laser-cutting process: