welded steel grating galvanized industrial platform

welded steel grating structure bearing bar cross bar

Hot-dip galvanized welded steel grating panels with corrosion resistant surface

welded steel grating manufacturing process resistance welding

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 for Industrial Platforms and Infrastructure

Welded steel grating is the most widely specified grating type for industrial flooring, offering high load capacity, structural rigidity, and long-term durability in demanding environments. This type of welded steel grating is manufactured using automated resistance welding, where cross bars are permanently fused into bearing bars under high pressure and electrical current.

Compared with other fabrication methods, welded steel grating delivers superior joint strength and consistent load distribution, making it the preferred solution for industrial platforms, walkways, and drainage systems. Standard production supports large-scale supply with stable quality and precise dimensional control for global engineering projects.

Welded Steel Grating Overview

Welded steel grating is a type of steel bar grating formed by resistance welding cross bars into load-bearing flat bars at precise spacing intervals.

This manufacturing method produces a permanent joint between bars, resulting in a high-strength grid structure widely used in industrial flooring systems.

Compared with other fabrication types, welded steel grating offers:

Lower production cost at scale
Stronger joint integrity
Higher load-bearing efficiency

It remains the most commonly used grating type across global industrial projects.

Manufacturing Process of Welded Steel Grating

Production of welded steel grating follows an automated resistance welding process:

Bearing bars are aligned at fixed spacing
Cross bars are pressed into position
High electrical current and pressure are applied simultaneously
Weld joints are formed instantly at each intersection

Heavy-duty automatic resistance welding machines ensure consistent weld penetration and uniform load distribution across all bearing bars.

This controlled process delivers:

Uniform weld strength
High dimensional accuracy
Stable structural performance

Compared with press locked steel grating, welded steel grating provides stronger joint fixation and is better suited for heavy-duty applications.

Specifications of Welded Steel Grating

Welded steel grating specifications are defined based on load requirements and span conditions.

Common Parameters

Bearing Bar Spacing (Center-to-Center)
19W4 (US standard) / 30 mm (metric standard)
Cross Bar Spacing
Typically 100 mm or 4 inch
Bar Size & Thickness
25×3 mm to 50×5 mm (custom sizes available)
Materials
Carbon steel / stainless steel
Surface Treatment
Hot-dip galvanizing / galvanized steel grating

Standard Comparison (Global Projects)

American Standard	China Standard	Bar Spacing (C-C)
11-W-4	G17/100	17.1 x 101.6 mm
13-W-4	G20/100	20.3 x 101.6 mm
15-W-4	G25/100	23.8 x 101.6 mm
19-W-4	G30/100	30.16 x 101.6 mm
22-W-4	G35/100	35.1 x 101.6 mm
25-W-4	G40/100	40.0 x 101.6 mm

Not sure which specification fits your project? Send drawings or load requirements for quick conversion and quotation.

Load Capacity & Performance

Welded steel grating is engineered for heavy-duty applications where structural performance is critical.

High load-bearing capacity under static and dynamic loads
Stable performance across long spans
Resistance to deformation and impact
Long-term durability in industrial environments

For higher load requirements, refer to heavy duty steel grating.

Structural Advantage in High-Vibration Environments

Welded steel grating provides superior structural rigidity compared to mechanical locking systems, especially under high vibration and dynamic load conditions.

Reduced risk of joint loosening
Improved fatigue resistance
Stable performance under continuous mechanical stress

This makes welded steel grating suitable for heavy industrial and infrastructure environments.

Applications of Welded Steel Grating

Welded steel grating is widely specified in engineering projects where structural strength, durability, and drainage performance must be balanced under real operating conditions.

Industrial Platforms

Designed for continuous load-bearing under heavy equipment and operational traffic.
Frequently applied with heavy duty steel grating to maintain structural stability across larger spans.

Petrochemical Plants

Suitable for corrosive and high-risk environments where both strength and surface safety are required.
Serrated surface options improve anti-slip performance in oily or chemical-exposed areas.

Power Stations

Used in maintenance platforms and elevated structures exposed to thermal stress and dynamic loads.
Welded steel grating maintains stable performance where vibration resistance is critical.

Walkways & Drainage Systems

Applied in access walkways and integrated drainage layouts across industrial facilities.
Commonly paired with trench drain grates for efficient water discharge and safe footing.

Anti-Slip & Safety Options

Surface configurations of welded steel grating can be adapted for safety-critical environments.

Serrated surface improves grip in wet or oily conditions
Enhanced traction for industrial safety compliance

Available options include:

serrated steel grating
anti-slip safety grating

Custom Welded Steel Grating

Welded steel grating supports full customization based on project requirements.

Custom sizes and bar configurations
Load-based design optimization
Cut-outs for pipes and equipment
Fabrication based on technical drawings

Project-specific solutions available with custom steel grating.

Installation & Fixing Methods

Welded steel grating allows fast and secure installation.

Mechanical fixing using clips
Welding fixation for permanent installation
Easy removal for maintenance when required

Compatible accessories:

grating clips fasteners

Quality Control

Each batch of welded steel grating is verified through a controlled inspection process:

Weld joint integrity inspection
Dimensional tolerance checks
Zinc coating thickness testing
Raw material certification (MTR)

Third-party inspection available (SGS / BV) for export projects.

Packaging & Export Logistics

Seaworthy packaging is applied to welded steel grating for long-distance transportation:

Reinforced steel strapping
Edge protectors to prevent deformation
Surface protection against coating abrasion

Products arrive flat, intact, and ready for installation.

Why Choose Welded Steel Grating from Factory Production

Welded steel grating produced through automated production lines ensures:

Consistent weld quality and dimensional accuracy
High-volume manufacturing capacity for bulk orders
Strict galvanizing and inspection standards
Proven export supply to Europe, Middle East, and North America
Factory-direct pricing for cost efficiency

Request a Quote

Welded steel grating is widely used in industrial and infrastructure projects requiring strength, durability, and cost efficiency.

Fast quotation within 12 hours
Technical drawings and load calculation support
Bulk production and global delivery

Fast turnaround on drawings and pricing helps keep projects on schedule.

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: