What Is a Slot Drain?
A slot drain is a linear drainage system with a narrow, continuous slot opening instead of a traditional grating. Also called brickslot drain or paved slot drain, it sits flush with the surrounding pavement, creating a nearly invisible drainage line that collects surface water efficiently without disrupting the visual continuity of the landscape. We need slot drain system.
Unlike wide-grated trench drains, the slot opening typically measures only 7–20 mm wide, making it heel-friendly, safe for pedestrians and bicycles, and extremely difficult to clog with debris. The hidden channel body below carries water away through standard drainage connections, matching the hydraulic capacity of conventional trench drains while delivering a cleaner aesthetic, It require linear slot drain.
How Slot Drain Systems Work
Slot drains consist of four core components:
Channel body(slot drainage channel): The main water-carrying trench, most commonly manufactured from polymer concrete (resin concrete), PP plastic, or stainless steel. Polymer concrete offers the highest strength-to-weight ratio, with a service life exceeding 50 years, zero water absorption, and excellent resistance to frost, UV, and chemical corrosion.
Slot cover: The narrow opening strip, formed from galvanized steel, ductile cast iron, or stainless steel (304/316/316L), available as single-slot or dual-slot configuration.
End caps & couplings: Modular 1-meter units connect with sealed joints, end caps close terminal runs, and inspection ports allow maintenance access at intervals.
Outlet connections: Standard bottom or side outlets connect directly to underground stormwater piping.
Water enters through the narrow slot, drops into the wider U-shaped channel below, and flows to discharge points via the smooth interior profile designed for self-cleaning velocity.
Key Specifications
Material of channel body: Polymer concrere and PP
Channel inside width: 100–500 mm
Standard unit length: 1000 mm
Total Width of Cover: Customized
The height of Upstand: Customized
Slot width: 7–20 mm
Materials of Slot Drain Cover: Pregalvanized Steel, stainless steel 201/304/316/316L
Load classes: A15 (15 kN) up to D400 (400 kN) per EN 1433 and EN124
Load Classes & Applications
Slot drains are classified to EN 1433 slot drain (European standard for linear drainage channels) with CE marking, while covers comply with EN 124:
A15 (15 kN): Pedestrian zones, sidewalks, plazas, parks, residential landscapes
B125 (125 kN): Parking lots, commercial driveways, school campuses
C250 (250 kN): Municipal roads, loading zones, commercial areas
D400 (400 kN): Highways, logistics yards, industrial facilities
The hidden design makes slot drains especially popular for architectural plazas, historic districts, brick-paved pedestrian streets, luxury residential developments, food processing plants, and airport terminals where visible grating would compromise the design intent.
Why Choose Slot Drains Over Traditional Trench Drains?
1.Aesthetic superiority: Virtually invisible once paved, preserving design continuity, called it hidden linear drainage.
2.Safety: No wide grating gaps for high heels, bicycle wheels, or small children's feet
3.Low maintenance: The narrow slot blocks large debris while channel velocity prevents sediment buildup
4.High hydraulic capacity: The U-shaped smooth interior delivers flow rates equal to conventional grated channels
5.Installation efficiency: Modular 1-meter units with pre-formed connections reduce field labor and fitting errors
About Fujian Winwin Group
FUJIAN WINWIN GROUP (established 2006, Fuzhou, China) is a specialized manufacturer of drainage channel systems and cable management solutions with over 20 years of export experience. We produce polymer concrete( polymer concrete slot drain) and PP plastic slot drains .Winwin Slot Drain is the best choise(slot drain supplier China).
All products are available in OEM/ODM configurations with custom slot widths, heights, and finishes to match project specifications. Standard sizes are available for fast shipment, with custom drawings quoted within 24 hours.We are a slot drain manufacturer.
Contact us for your slot drain project requirements:
Email: mebbo@winwinbloc.com
WhatsApp: +86 1588 0013 967
Published by Fujian Winwin Group | Professional EN1433 Drainage System Manufacturer
Keywords
Primary Keywords
slot drain, slot drain system, linear slot drain, slot drainage channel, polymer concrete slot drain, stainless steel slot drain, slot drain manufacturer, EN 1433 slot drain, hidden linear drainage,brickslot drain, slotted drain
Long-tail Keywords
stainless steel slot drain, slot drain manufacturer, slot drain supplier China, polymer concrete slot drain, PP plastic slot drain, hidden linear drainage, slot drain cover, slot drain vs trench drain, slot drain installation
Standards & Certification Keywords
EN 1433 slot drain, EN 124 slot drain cover, CE certified slot drain, load class A15 B125 C250 D400 slot drain
Application Keywords
slot drain for driveway, slot drain for commercial plaza, slot drain for food processing plant, slot drain for landscape paving, linear drainage channel manufacturer
Send Email
WhatsApp