Trench drains and plastic injection molded trench drains

Posted On: February 9, 2025
Posted By: admin

Trench Drains: An Overview

Trench drains are surface drainage systems designed to efficiently channel water away from surfaces, collect debris, balance surface loads, and more.

Types of Trench Drains

A. Pre-Sloped Trench Drains
Pre-sloped trench drains feature a built-in gradient, typically ranging from 0.5% to 1%, to naturally guide water flow toward the drainage outlet. These systems are commonly installed in commercial environments such as industrial facilities, sidewalks, and parking lots, where they help minimize debris accumulation.

B. Neutral (Non-Sloped) Trench Drains
Neutral trench drains have a consistent, uniform depth and lack an internal slope. Water flow is directed by external grading and gravity. These drains are ideal for custom installations and are frequently used in residential driveways, pool decks, and warehouse settings.

C. Slot Drains
Slot drains consist of a narrow surface opening rather than a wide grate. Constructed primarily from polymer concrete or stainless steel, they are popular in areas where cleanliness is a priority. Their design reduces clogging and enables easy cleaning via high-pressure flushing. Typical applications include breweries, airports, landscaping, golf courses, and foundation protection, where they also assist in lowering hydrostatic pressure and enhancing basement waterproofing.

D. Catch Basin Integrated Trench Drains
This type of system incorporates catch basins at strategic intervals to collect sediment and debris, preventing blockages in the underground drainage network. This feature extends the system’s service life and enhances performance, making it well-suited for high-traffic areas such as roads, loading docks, and logistics hubs.

E. Polymer Concrete Trench Drains
Made from a composite of resin binders and mineral aggregates, these modular pre-formed systems offer excellent chemical resistance, superior load-bearing capabilities, and enhanced durability. They are widely used in heavy-duty environments like chemical plants, manufacturing sites, and industrial zones.

F. Plastic (HDPE/Polypropylene) Trench Drains
Manufactured from high-density polyethylene (HDPE) or polypropylene, these trench drains are lightweight, corrosion-resistant, and easy to handle. They are especially suitable for patios, pool decks, water parks, and residential driveways.

G. Stainless Steel Trench Drains
Stainless steel trench drains are designed for industries where hygiene and durability are crucial, such as food and beverage processing, pharmaceuticals, and laboratories. These systems offer excellent rust and corrosion resistance and can be sterilized to prevent bacterial or viral contamination.

H. Cast Iron Trench Drains
Known for their superior strength and impact resistance, cast iron trench drains are best suited for heavy-load applications like industrial plants, warehouses, loading docks, airports, bridges, petrol stations, and other public infrastructure projects.

Trench Drains by Application

Residential Trench Drains
Commercial Trench Drains
Industrial Trench Drains
Public Infrastructure Trench Drains

Quality Parameters for Trench Drains

Compressive Strength: Resistance to compression loads.
Corrosion Resistance: Durability against corrosion from moisture or chemicals.
Abrasion Resistance: Ability to withstand wear and tear.
Load Class: Classification based on load-bearing capacity.
Fire Resistance: Capacity to endure high temperatures.
Chemical Resistance: Performance against chemical exposure.
UV Resistance: Protection from ultraviolet radiation damage.
Proof Load: Maximum load a drain can withstand.
Slope Percentage: The incline rate facilitating water flow.
Impact Resistance: Strength to absorb sudden shocks or impacts.
Thermal Resistance: Ability to handle temperature-induced expansion.
Electrical Conductivity: Capability to prevent or control electrical flow.

Our Plastic Trench Drains

At Bindal Technopolymer Pvt. Ltd. (BTPL), we manufacture a diverse range of plastic trench drains using advanced plastic injection molding techniques, ensuring quality and durability for industrial applications.

Production Process of Injection-Molded Plastic Trench Drains

Material Preparation
- Selection of high-quality plastics (polypropylene, polyethylene).
- Drying and blending for uniform consistency.
Mold Design & Preparation
- Custom mold design based on client specifications.
- Precision fabrication and inspection.
Injection Molding
- Molten plastic is injected into the mold at high pressure.
- Ensures precise formation of the trench drain’s shape.
Cooling & Solidification
- Controlled cooling to maintain dimensional accuracy and prevent defects.
Trimming & Finishing
- Removal of excess material.
- Polishing for a smooth, professional finish.
Quality Inspection
- Rigorous testing for strength, dimension, and surface quality.
- Compliance with industry standards.
Packaging & Distribution
- Carefully packaged for safe transport and timely delivery.

Advantages of Our Injection-Molded Plastic Trench Drains

✔ Lightweight and easy to install.
✔ Corrosion-resistant and highly durable.
✔ More cost-effective than fiber-based alternatives.
✔ Excellent crack and chip resistance in freeze-thaw conditions.
✔ Customizable in terms of shape, size, and configuration.
✔ Smooth surface finish minimizes debris accumulation and optimizes flow.
✔ Reinforced ribbing for enhanced strength and stability.
✔ High tolerance to thermal expansion and shrinkage.
✔ Superior oil and grease runoff capacity.

Product Highlight: 6” Wide Precast Trench Drain System

Our 6-inch wide precast trench drain system is engineered for high performance, especially in areas prone to heavy rainfall and water accumulation. Constructed with durable polypropylene and reinforced with a heavy-duty frame, this system excels in strength, load capacity, and longevity.

Precast Trench Drains

Precast trench drains are manufactured in controlled environments based on industry requirements. Their advantages include faster installation, exceptional strength, and long-lasting durability, making them ideal for industrial, commercial, and residential applications.

Trench Drain Gate
A trench drain gate serves as a secure enclosure installed at the inlet or outlet of a trench drain to regulate water flow and control access.

For more information on our trench drain products, please refer to our brochure:

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