Products Description
ASTM A36 Carbon Steel Grating is an open-grid structural flooring product manufactured from ASTM A36 mild carbon steel flat bars and cross bars through automatic pressure welding or manual welding.
ASTM A36 is one of the most widely used structural carbon steels in North America due to its excellent weldability, machinability, and cost-performance ratio. The material provides reliable strength for industrial applications while remaining easy to fabricate and galvanize.
Compared with solid steel plates, steel grating offers several advantages:
Higher strength-to-weight ratio
Excellent drainage and ventilation
Improved slip resistance
Reduced structural dead load
Easier installation and maintenance
Lower life-cycle costs

These characteristics make ASTM A36 steel grating the preferred solution for industrial flooring systems around the world.
Technical Specifications
| Item | Specification |
|---|---|
| Material | ASTM A36 Carbon Steel |
| Manufacturing Process | Pressure Welded / Hand Welded |
| Surface Finish | Black Steel / Hot Dip Galvanized / Painted |
| Bearing Bar Height | 20–100 mm |
| Bearing Bar Thickness | 3–10 mm |
| Bearing Bar Pitch | 20 / 30 / 40 mm |
| Cross Bar Pitch | 50 / 100 mm |
| Panel Width | Customized |
| Panel Length | Customized |
| Standard | ASTM A36, ASTM A123, ISO, YB/T 4001 |
Common application scenarios of ASTM A36 Carbon Steel Grating
1.Grating for Operating Floors
Mech Pitch :33 * 33 mm
Load bearing bar size 40*5 mm
Transverse Bar Size :Diameter 5 mm (support bar)
Binding bar size :40 x 5 mm
Protection : All surfaces to be made free from rust & scale by chemical cleaning
Painting: Coat of bituminous paint by dipping dry film 60 micron
Grating size 700 x 1000 x 40 mm
Grating size 800 x 1000 x 40 mm
Grating size 1300 x 1000 x 40 mm

2.Steps for stair ways
Mech Pitch :33 * 33 mm
Load bearing bar size :30*5 mm
Transverse Bar Size :Diameter 5 mm (support bar)
Side plates size : 70 x 5 mm
Front edge protected : by 30 x 30 mm slotted angle
Protection : All surfaces to be made free from rust & scale by chemical cleaning
Panting : apply coat of suitable bituminous paint by dipping dry film 60 micron
Grating Size :1000 x 1000 mm x 40
Grating Size :1200 x 1000 mm
Grating Size :1500 x 1000 mm x 40
Grating Size :2000 x 1000 mm x 40

3.Grating for open channels
Material: ASTM A36
Mech Pitch: 33 * 33 mm
Load bearing bar size :50*5 mm
Transverse Bar Size :Diameter 5 mm x width of panel
Binding bar size :50 x 5 mm x width of panel
Protection : All surfaces to be made free from rust & scale by chemical cleaning
Grating size 770 x 1000 x 50 mm
Grating size 820 x 1000

4.Steps for stair ways
Material:ASTM A36
Mechanical Opening : 33 x 33 mm
Load bearing bar size :30*5 mm
Transverse Bar Size :Diameter 5 mm(Support Bar)
Front Edge Protection :by 30 x 30 mm soltted angle
Protection : All surfaces to be made free from rust & scale by chemical cleaning
Painting: apply coat of suitable bituminous paint by dipping dry film 60 micron
Steps size 205 x 1000
Steps size 240 x 800

Export Case – Steel Grating Supplied to Qatar
GNEE Steel has supplied ASTM A36 Carbon Steel Gratings to industrial and infrastructure projects in the Middle East, including Qatar. The customer required customized grating panels with excellent structural strength and corrosion resistance for outdoor service conditions.
The finished products were securely packaged for ocean transportation, enabling safe delivery and efficient installation on site. Today, GNEE Steel continues to support contractors, distributors, and EPC companies worldwide with reliable steel grating solutions and professional export services.


Packaging and Shipping
1.Standard Export Packing
Grating panels are bundled securely with steel straps and reinforced to avoid deformation or damage during transit.
2.Customized Labels & Project Identification
Each bundle can include labels indicating material grade, size specifications, and project codes for efficient handling at the job site.
3.Additional Protection Available
Wooden pallets, protective covers, and enhanced packaging can be provided for sensitive surface requirements or long-distance shipment.


Request Your Free Quote Today!
Whether you need ASTM A36 Carbon Steel Gratings for industrial flooring, walkways, drainage systems, or heavy-duty platforms, GNEE Steel is your trusted manufacturing partner.
Simply send us your drawings, dimensions, or project specifications. Our experienced sales and engineering team will provide:
1.Fast quotations within 24 hours
2.Competitive factory-direct pricing
3.Customized manufacturing solutions
4.Professional export packaging
5.On-time global delivery
6.Dedicated technical support throughout your project

Request a Free Quote Within 24 Hours.
Frequently Asked Questions
1.What is ASTM A36 steel grating?
ASTM A36 steel grating is a structural flooring product manufactured from ASTM A36 carbon steel flat bars and cross bars, offering excellent strength, weldability, and cost efficiency.
2.Can ASTM A36 steel grating be galvanized?
Yes. Hot-dip galvanizing is the most common surface treatment, providing excellent corrosion resistance for outdoor and industrial environments.
3.What is the difference between plain and serrated steel grating?
Plain grating is suitable for general applications, while serrated grating provides improved slip resistance in wet or oily conditions.
4.Can you manufacture according to our drawings?
Yes. We provide customized production based on CAD drawings, technical specifications, and project requirements.
5.Which industries commonly use ASTM A36 steel grating?
It is widely used in oil & gas, petrochemical plants, power stations, municipal drainage, mining, ports, warehouses, manufacturing facilities, and renewable energy projects.
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