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Help CenterGalvanized Steel Bar Grating for Drainage Cover, Press Lock Design, 30x30mm Opening, Anti-Slip, Easy Installation
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Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer in the metal grating industry, exporting US$5–10 million annually to markets across North America, South America, Europe, Asia, Africa, and Oceania. Our Galvanized Steel Bar Grating for Drainage Cover with Press Lock Design represents a perfect balance of strength, durability, and ease of use. Crafted from high-quality galvanized steel and featuring a precise 30x30mm opening, this grating is engineered to handle heavy loads while providing excellent drainage and slip resistance. Whether you need a reliable cover for municipal drainage systems, industrial walkways, or commercial trenches, our press lock design ensures a secure, rattle-free fit without welding, making installation quick and cost-effective.
Key Features & Benefits
- Press Lock Construction – Each bearing bar is mechanically locked into the cross bars under high pressure, creating a rigid, monolithic panel that resists shifting and loosening over time. No welding means no weak points and a smoother surface.
- 30x30mm Square Opening – Optimized for drainage efficiency while preventing debris buildup. The moderate gap size allows water and small particles to pass through freely, yet keeps larger objects and foot traffic safe.
- Anti-Slip Surface – The flat top bar design with a slightly raised cross bar pattern provides excellent traction even in wet or oily conditions, reducing the risk of slips and falls.
- Hot-Dip Galvanized Finish – A thick zinc coating protects the steel from corrosion, rust, and chemical exposure, ensuring a long service life in harsh outdoor or industrial environments.
- Lightweight & Easy Installation – Compared to traditional cast iron or concrete covers, our steel grating is significantly lighter, reducing transportation and handling costs. The panels can be easily cut to size on-site or ordered customized to your exact dimensions.
- Customizable Options – Available in various thicknesses, bar spacing, and panel sizes to meet specific load requirements. We also offer serrated bars for extra grip, or plain bars for easier cleaning.
| Parameter | Specification |
|---|---|
| Material | Q235 / Q345 Galvanized Steel |
| Surface Treatment | Hot-dip Galvanized (avg. 85μm) |
| Opening Size | 30mm x 30mm (center-to-center) |
| Bearing Bar Thickness | 3mm / 4mm / 5mm (customizable) |
| Bearing Bar Height | 25mm / 30mm / 40mm (customizable) |
| Cross Bar Spacing | 50mm / 100mm (standard) |
| Panel Size | Up to 6000mm x 1500mm, custom sizes available |
| Load Capacity | Certified per client specification (e.g., 5 kN/m²) |
Why Choose Our Galvanized Steel Bar Grating?
Our press lock grating is manufactured using advanced automated machinery, ensuring consistent quality and tight tolerances. The galvanized coating provides superior corrosion resistance, making it ideal for wastewater treatment plants, chemical facilities, parking garages, and outdoor drainage channels. The open area of roughly 56% (based on 30x30mm spacing) allows for rapid water evacuation, reducing ponding and flood risks. Additionally, the grating is 100% recyclable at end of life, supporting sustainable construction practices.
Trust & Credentials
With over 25 years of manufacturing experience, Anping County Boli Hardware Wiremesh Products Factory has supplied millions of square meters of grating to clients in more than 50 countries. Our annual export value of US$5–10 million reflects the confidence our customers place in our products. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, with efficient logistics to any destination. Every order is inspected before shipment to ensure dimensional accuracy, coating thickness, and structural integrity. Our team is ready to assist with technical drawings, load calculations, and custom fabrication to meet your project requirements.
Frequently Asked Questions
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Q: What is the difference between press lock and welded grating?
A: Press lock grating uses mechanical interlocking without welding, creating a smoother surface and eliminating potential weld corrosion. It is also lighter and more cost-effective for many applications. -
Q: Can the grating be cut to size on-site?
A: Yes, the panels can be easily cut with a standard angle grinder or abrasive saw. We can also supply pre-cut panels to your exact dimensions. -
Q: Is the anti-slip surface suitable for heavy vehicle traffic?
A: For vehicle traffic, we recommend using serrated bars or a thicker bearing bar. Please consult our technical team for load rating recommendations. -
Q: How long does the galvanized coating last?
A: Under normal outdoor conditions, hot-dip galvanizing provides 20–50 years of corrosion protection, depending on environment. In industrial or coastal areas, the lifespan may be shorter. -
Q: Do you offer samples before bulk order?
A: Absolutely. We can provide a small sample panel (e.g., 300x300mm) for evaluation. Shipping cost is at customer's expense, but we will refund it upon placing a formal order. -
Q: What is the minimum order quantity?
A: MOQ is typically 50 square meters for standard sizes. Custom sizes may require a higher minimum. Please contact us for details. -
Q: Can I get a certificate of material or galvanizing?
A: Yes, we can provide mill test certificates and galvanizing thickness reports upon request, as part of our quality control process. -
Q: How do I install the grating in a drainage channel?
A: The grating can be set into a concrete frame with anchor bolts or simply placed on a ledge. We recommend using a rubber or steel seating strip to minimize vibration. Detailed installation instructions are available.
Contact us today for a quote or technical advice. Our team at Anping County Boli Hardware Wiremesh Products Factory is committed to providing high-quality, durable galvanized steel bar grating that meets your drainage and safety needs. With our global shipping network and flexible customization, we are your ideal partner for infrastructure and industrial projects.
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