1. Introduction to Press-Locked Steel Grating

Press-locked steel grating is a type of metal grating that is manufactured by pressing crossbars into bearing bars at high pressure. Unlike welded grating, which is joined by fusion welding, press-locked grating features mechanically locked connections, resulting in a smooth, clean, and aesthetically pleasing appearance. This type of grating is widely used in industrial, commercial, and architectural applications due to its durability, strength, and versatility.

2. Manufacturing Process

The production of press-locked steel grating involves the following steps:

1. Material Selection: Carbon steel, stainless steel, or aluminum is selected based on the application.

2. Bearing Bar Preparation: Bearing bars are cut and prepared to the required dimensions.

3. Crossbar Insertion: Pre-punched bearing bars receive perpendicular crossbars, which are then locked in place through hydraulic pressing.

4. Final Processing: The grating undergoes surface treatments such as galvanization, painting, or powder coating for corrosion resistance.

3. Key Features and Advantages

• Enhanced Aesthetics: The press-locked design creates a uniform, sleek appearance suitable for architectural applications.

• High Load-Bearing Capacity: Strong structural integrity makes it ideal for heavy-duty use.

• Precision and Accuracy: The press-locking process ensures precise spacing and alignment.

• Smooth Surface: Unlike welded grating, it does not have welding projections, making it safer for foot traffic.

• ปรับแต่งได้: Available in various materials, bar thicknesses, and spacing configurations to meet diverse requirements.

4. Material Specifications

Press-locked grating is available in different materials, each offering unique benefits:

• Carbon Steel: Cost-effective and strong, usually hot-dip galvanized for corrosion protection.

• Stainless Steel (304, 316): Offers excellent corrosion resistance, suitable for marine and chemical environments.

• Aluminum: Lightweight, corrosion-resistant, and ideal for environments requiring minimal weight load.

5. Load-Bearing Bar Specifications

• ความหนา: Typically ranges from 2 mm to 8 mm.

• ความลึก: Common depths include 20 mm, 25 mm, 30 mm, 40 mm, and 50 mm.

• ระยะห่าง: Standard spacing between bearing bars ranges from 30 mm to 50 mm, depending on load requirements.

6. Crossbar Specifications

• วัสดุ: Same as bearing bars (carbon steel, stainless steel, or aluminum).

• รูปร่าง: Usually rectangular or square bars.

• ระยะห่าง: Commonly 50 mm or 100 mm apart, based on design requirements.

7. Standard Press-Locked Steel Grating Models

Grating models are categorized based on bearing bar spacing, crossbar spacing, and bar thickness. Some common models include:

• PLS30/50: Bearing bar spacing of 30 mm, crossbar spacing of 50 mm.

• PLS40/50: Bearing bar spacing of 40 mm, crossbar spacing of 50 mm.

• PLS30/100: Bearing bar spacing of 30 mm, crossbar spacing of 100 mm.

• PLS40/100: Bearing bar spacing of 40 mm, crossbar spacing of 100 mm.

8. Surface Treatments

To enhance durability and corrosion resistance, press-locked steel grating can undergo different surface treatments:

• Hot-Dip Galvanization: Provides excellent rust resistance and extends the lifespan of the grating.

• Electro-Galvanization: A thinner protective coating, suitable for indoor applications.

• Powder Coating: Available in various colors for aesthetic appeal and additional protection.

• Mill Finish: Untreated surface, often used when corrosion resistance is not a concern.

9. Dimensions and Standard Panel Sizes

Standard panel sizes vary based on regional and industry requirements. Common panel sizes include:

• 1000 mm × 6000 mm (most common for industrial applications)

• 1000 mm × 3000 mm

• 1200 mm × 2400 mm

• Custom sizes available upon request

10. Applications of Press-Locked Steel Grating

Press-locked steel grating is used in various industries due to its strength, durability, and aesthetic appeal. Common applications include:

• Industrial Flooring: Used in factories, warehouses, and power plants for safe, non-slip surfaces.

• Walkways and Platforms: Provides sturdy walking surfaces in high-traffic areas.

• Stair Treads: Installed as stair treads for industrial and commercial buildings.

• Drainage Covers: Allows efficient water drainage while maintaining strength.

• Architectural Facades: Used in building exteriors for modern, industrial aesthetics.

• Security Fencing: Offers strength and visibility for high-security enclosures.

• Bridge Decking: Provides lightweight yet strong support for pedestrian and vehicular bridges.

11. Customization Options

• Different Bar Spacing: Available in custom spacing configurations based on load requirements.

• Material Selection: Carbon steel, stainless steel, or aluminum.

• Surface Finish: Galvanized, powder-coated, painted, or untreated.

• Panel Size: Tailored dimensions to fit specific project needs.

• Pattern Design: Custom patterns for architectural applications.

12. Load and Deflection Data

The load-bearing capacity of press-locked grating is determined by several factors:

• Material Strength: Carbon steel offers the highest strength, while aluminum is lighter.

• Bar Thickness and Depth: Thicker and deeper bars increase the load capacity.

• Spacing Configuration: Closer spacing results in better load distribution.

Typical load-bearing values:

• โหลดคนเดินเท้า: 4 kN/m² to 7 kN/m²

• น้ำหนักบรรทุกยานพาหนะ: 10 kN/m² to 30 kN/m² (depending on bar thickness and spacing)

13. Installation and Maintenance

Installation Methods:

• Welded Installation: Direct welding to the support structure.

• Clamping System: Uses fasteners or clips to attach the grating to the framework.

• Bolted Installation: Suitable for removable sections.

Maintenance Requirements:

• Regular Cleaning: Remove debris and dirt to prevent buildup.

• Corrosion Inspection: Check for signs of rust and apply protective coatings as needed.

• Structural Integrity Checks: Inspect for bending or damage, especially in high-load areas.

14. Compliance and Standards

Press-locked steel grating is manufactured according to international standards:

• ANSI/National Association of Architectural Metal Manufacturers (NAAMM) MBG 531-09

• BS 4592-0:2006 (British Standard for Industrial Flooring)

• DIN 24537 (German Standard for Steel Grating)

• AS 1657-2018 (Australian Standard for Fixed Platforms, Walkways, Stairways, and Ladders)

• ISO 14122 (Safety of Machinery – Permanent Means of Access to Machinery)

15. Conclusion

Press-locked steel grating is an essential material in industrial, commercial, and architectural applications. Its strength, durability, and aesthetic versatility make it ideal for flooring, walkways, stair treads, and structural facades. With various customization options, surface treatments, and compliance with global safety standards, press-locked steel grating is a reliable and long-lasting solution for a wide range of projects.