Trench Cover Grating: Durable and Efficient Drainage Solutions
Steel grating trench covers, also known as steel drainage covers or cable trench covers, are fabricated by welding flat bearing bars and twisted cross bars at fixed intervals. After edging and framing, the product serves as a secure, anti-slip, and high-drainage cover for various trench systems. Widely used in municipal infrastructure, industrial plants, underground facilities, ports, and other high-load, high-traffic areas, this cover provides excellent corrosion resistance and long-term durability thanks to hot-dip galvanizing.
Specifications of Trench Cover Grating
Load-Bearing Flat Bars: Standard dimensions include 25×3 mm, 30×5 mm, 40×5 mm, etc.
Cross Bars: Typically 5×5 mm or 6×6 mm twisted square steel to form a rigid grid.
Edging Frame: Angle steel or flat steel welded on all sides for enhanced structural integrity.
Optional Accessories: Hinge mechanisms, lifting handles, anti-theft bolts or locking systems for security and convenience.
Manufactured through resistance pressure welding or manual arc welding, our trench covers deliver high structural strength, precise dimensions, and long service life.
We offer various specifications for trench covers and well covers to meet different needs. Below are some common model dimensions:
Model | A (Clear Opening) | B (Cover Width) | C (Frame Width) | D (Frame Width) | E (Grating) |
CSG/L | 380 × 680 | 440 × 745 | 460 × 770 | 25 | G253/30/100 |
CSG/H | 380 × 680 | 460 × 755 | 480 × 780 | 40 | G405/30/100 |
CSG/XH | 380 × 680 | 480 × 765 | 500 × 790 | 50 | G505/30/100 |
Galvanized Sidewalk Trench Grating Dimensions:
Description | A (mm) | B (mm) |
GPTG-1 | 700 | 850 |
GPTG-2 | 850 | 1000 |
Key Advantages of Trench Cover Grating
✅ Superior Corrosion Resistance:
Hot-dip galvanized surface prevents rust and ensures long-term outdoor durability, with a service life of over 20 years even in harsh environments.
✅ Efficient Drainage:
High open area ratio (over 80%) ensures rapid drainage, effectively preventing water accumulation and flooding.
✅ Anti-Slip & Safety Design:
Optional serrated flat bars enhance surface grip, reducing slip risks in wet or oily environments.
✅ Modular & Easy Installation:
Prefabricated modular design supports fast installation, simple maintenance, and easy replacement.
✅ Full Customization Available:
Dimensions, materials, bar spacing, and surface treatments can be tailored to meet project-specific requirements.
Types of Trench Cover Grating
1. Heavy Duty Steel Plate Grating Trench Cover
Material: Carbon Steel / Hot-Dip Galvanized
Surface Treatment: Hot-dip galvanizing, anti-rust oil, or industrial painting
Key Features:
High load-bearing capacity
Corrosion and acid/alkali resistance
Slip-resistant surface
Easy to install and maintain
Excellent drainage and ventilation performance
Applications:
Ideal for industrial facilities, urban drainage systems, ports, airports, and high-traffic car parks requiring heavy load support.
2. 304 Stainless Steel Wedge Wire Linear Drain Cover
Material: SUS 304 Stainless Steel
Structure: Composed of wedge wire grate and matching trough/channel
Grate Specifications:
Wedge wire: 3x4.2 mm
Spacing: 3.2 mm
Support wire: 3x6 mm, 25 mm spacing
Frame: 22.8x5 mm
Width options: 63 mm / 75 mm / 98 mm / 100 mm
Length options: 100 mm to 1000 mm (custom sizes available)
Trough Specifications:
Plate thickness: 1.2 mm
Width: 70 mm or 100 mm
Length: 300 mm / 500 mm / 800 mm / 1000 mm
Outlet: 40 mm horizontal drain with deodorization trap
Frame: Integrated flange for improved waterproofing
Key Features:
Modern and hygienic design
Anti-odor drainage
Customizable to client drawings
Applications:
Widely used in bathrooms, kitchens, public showers, commercial laundry rooms, and hotels requiring sanitary drainage.
3. Serrated Metal Slot Drain Grating Cover
Material: Carbon Steel / Galvanized Steel
Surface Treatment: Serrated top for anti-slip performance
Key Features:
Enhanced safety with serrated surface
Self-cleaning, anti-slip, and cost-effective
Welded construction for strength and stability
Applications:
Ideal for walkways, production floors, machine shops, and areas where extra grip is required under wet or oily conditions.
4. Stainless Steel / Galvanized Floor Drain Grate
Material: Stainless Steel Sheet / Galvanized Steel Plate
Structure Options: Serrated, smooth-surface, or press-locked type
Key Features:
Durable and pressure-resistant
Excellent drainage capacity
Versatile for both industrial and commercial use
Applications:
Suitable for flooring, walkways, stair treads, maintenance platforms, equipment rooms, and high foot traffic zones.
5. Outdoor Bar Grating Drain Cover
Material: Stainless Steel / Carbon Steel
Surface Treatment:
Hot-dip galvanizing, cold galvanizing, painting, anti-rust oil, or untreated
Key Features:
Weather-resistant and anti-slip
Supports light and air ventilation
Explosion-proof and oxidation-resistant properties
Applications:
Used in municipal stormwater management, landscaping, pedestrian walkways, and public plaza drainage.
6. Cold Rolled Steel Drain Grating for Indoor Use
Material: Cold Rolled Steel
Key Features:
Lightweight with high strength
Cost-effective and easy to install
Clean and uniform finish
Applications:
Suitable for indoor drainage in commercial buildings, factory channels, service tunnels, and utility zones.
Technical Support & Custom Services
We provide end-to-end technical support including selection consulting, drawing optimization, sample development, batch production, and installation guidance. Products are subject to rigorous mechanical testing, corrosion resistance evaluation, and dimensional control. Third-party inspection reports and international certifications (ISO, CE) can be provided upon request.
For design assistance, project quotes, or customization inquiries, please feel free to contact our engineering team. We are committed to delivering high-performance trench cover solutions for your infrastructure needs.
Package and Ship
For secure transportation, we offer the following packaging options:
Strap Packing: Ideal for small-sized press-locked grating.
Pallet Packing: Suitable for large orders and container loading.
Screw Rod Fixation: Secures the grating in place for safe transit.
Our products are carefully inspected and packaged to meet international shipping standards.
Why Choose Hebei Hengchen Technology Co., Ltd.?
Hebei Hengchen Technology Co., Ltd. has over 10 years of experience in the production of high-quality steel grating. We are dedicated to delivering top-tier products tailored to meet the specific needs of our global clients.
Quality Assurance
Over a decade of industry expertise and innovation in manufacturing steel grating.
Fast Delivery
Daily Production Of 8,000 Square Meters, Fast Delivery From Powerful Manufacturers
Experience & Expertise
We Use Advanced Technology And Premium Materials To Ensure Consistent Product Quality.
Customization
We Offer Tailor-Made Solutions Based On Your Unique Project Requirements, Including Customized Sizes And Finishes.
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