Welded Steel Grating

Additional information

Material Options	Mild Steel (Carbon Steel), Stainless Steel (201/304/316)
Bearing Bar Size	25×3mm, 30 ×3mm, 40×3mm, 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	1000 ×1000mm or 1000 ×2000mm or 1000 × 5800mm(Custom sizes available).
Applications	Industrial platforms, stair treads, drainage trench covers, walkway flooring, and mezzanine decking.
Loading Capacity	Light Duty (Pedestrian) or Heavy Duty (Vehicle/Truck traffic).
Manufacturing Standards	ASTM A123, BS4592, AS1657, or YB/T4001.

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

Welded Steel Grating Manufacturer & Global Supplier

High-performance welded steel grating engineered for industrial flooring, walkways, and trench systems. Manufactured through high-pressure resistance welding, it delivers superior strength, durability, and cost efficiency for 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.

What Is Welded Steel Grating?

Welded steel grating is manufactured by electrically welding bearing bars and cross bars at each intersection, forming a strong and rigid steel grid panel. It offers excellent load-bearing performance and long-term durability for industrial applications.

To understand how it compares with other types, you can also explore our
Steel Bar Grating solutions.

Welded Steel Grating Manufacturing Process

The grating is produced through an automated resistance welding process, where cross bars are welded onto bearing bars under high pressure and temperature.

Automated resistance welding technology
Strong welded intersections
Uniform load distribution
High strength-to-weight ratio
Cost-efficient production

Materials and Surface Treatment

Carbon Steel (ASTM A36 / Q235)
Stainless Steel 304 / 316
Hot-dip galvanized (ASTM A123)
Painted or untreated options

For corrosion-resistant applications, see our
Galvanized Steel Grating.

Surface Types of Welded Steel Grating

Plain surface – standard industrial use
Serrated surface – anti-slip safety
I-bar surface – lightweight design

For anti-slip environments, choose
Serrated Steel Grating, or reduce weight with
I Bar Grating.

Welded Steel Grating Specifications

Item	Range
Bearing Bar Spacing	19, 25, 30, 40 mm
Cross Bar Spacing	50, 76, 100 mm
Bearing Bar Size	20×3 – 100×10 mm
Panel Width	Up to 1000 mm
Surface	Galvanized / Painted

The most popular specification is 19W4 welded steel grating, balancing strength, drainage, and cost.

Load Capacity Reference

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

Welded Steel Grating Applications

Industrial platforms
Walkways and catwalks
Drainage trench covers
Oil & gas facilities
Power plants

For stair systems, check
Grating Stair Treads.

Advantages of Welded Steel Grating

High load-bearing capacity
Strong welded structure
Excellent drainage
Cost-effective solution
Low maintenance

Custom Welded Steel Grating Fabrication

We provide custom fabrication services including cut-to-size panels, edge banding, special shapes, and project-based engineering design.

For custom solutions, visit
Custom Steel Grating.

Quality Inspection

Dimensional inspection
Welding strength testing
Galvanizing thickness inspection
Third-party inspection (SGS / BV)

Request a Technical Quote

Need help selecting the right grating? Our engineering team is ready to assist.

Get a 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: