Zhonglong’s Three-Dimensional Composite Drainage Net For Sale

Zhonglong ʼs Three-Dimensional Composite Drainage Net For Sale

The three-dimensional composite drainage net is a new type of geosynthetic drainage material. It is made by thermally bonding one or both sides of a three-dimensional drainage core with needle-punched nonwoven geotextiles.

The drainage core is mainly composed of high-density polyethylene (HDPE), with added anti-ultraviolet and antioxidant agents. It is produced through a special extrusion molding process to form a three-dimensional structure with drainage grooves.
The central HDPE ribs are larger and arranged longitudinally, creating straight drainage channels in the flow direction, while the lateral ribs are arranged in a crisscross pattern to enhance stability. This design ensures high drainage efficiency even under heavy loads.
When combined with geotextiles, the composite system forms an integrated structure that provides filtration, drainage, and protection functions—making it one of the most advanced and ideal drainage geosynthetic materials available today.

3D Composite Drainage Board Core Features

Innovative Material:

Three-dimensional composite drainage net is a new type of drainage geosynthetics, formed from a HDPE core layer between two needle-punched non-woven geotextiles.

Advanced Structure:

Three-dimensional thick vertical ribs enh ance durability. Inclined ribs on the top and bottom improve drainage efficiency. Moreover, it can endure high tensile strength, able to withstand

high-pressure loads for a long time (able to withstand compression loads greater than

3000kPa), and it features great corrosion resistance, acid and alkali resistance, long service life, low cost, and convenient construction.

Efficient Water Management:

Three-dimensional composite drainage net can rapidly drain underground water, block

capillary water under high construction loads and maintain optimal thickness for enhanced water conductivity, delivering strong drainage capacity (equivalent to one meter thick gravel drainage), effectively replace traditional sand and gravel systems.

Comprehensive Performance:

Three-dimensional composite drainage net has functions of filtration, drainage, ventilation, and protection. Meanwhile, it provides isolation for foundations and reinforces structural

integrity, which reduce the probability of geotextile embedding and maintain long-term stable hydraulic conductivity.

Product Size

Thickness	5mm ，6mm ，8mm
Length/Roll	30m ，40m ，50m
Width	4m ，4.6m ，6m

Technical Parameters

GB/T 19470-2004

No.	Item	Index
		Geotextile Drainage Net	Composite Drainage Net
1	Density (g/m³)	≥0.939	--
2	Content of carbon black ( %)	2~3	--
3	Longitudinal tensile strength (kN/m²)	≥8.0	≥16.0
4	Longitudinal hydraulic conductivity (Normal load 500kPa, hydraulic gradient 0.1) (m/s)	≥3.0 ×10-3	≥3.0 ×10-4
5	Peel strength (kN/m²)	--	≥0.17
6	Mass of Geotextile per unit area (g/m²)	--	≥200
Note: Technical indexes of geotextile shall meet the requirements of GB / T 17639

Thickness and Deviation

No.	Item	Index
1	Width (mm)	5.0	6.0	7.0	8.0
2	Deviation ( %)	≥0

Application Scopes of 3D Composite Drainage Net

1. Landscape & Recreational:

Gardens, artificial lakes, golf courses, ponds.

2. Municipal Infrastructure:

Buildings, subways, tunnels, roofs, roadbeds, foundations.

3. Environmental Containment:

Hazardous material warehouses, industrial waste sites, garbage landfills.

4. Agricultural:

Animal husbandry facilities.

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Sichuan Zhonglong Environmental Protection Co., Ltd.

One-stop Geosynthetics supply and service

Sichuan Zhonglong Environmental Protection Co.,Ltd. is engaged in geosynthetics manufacture, sale, welding, installation, Remote auxiliary service. Sichuan Zhonglong Environmental Protection Co.,Ltd. located in the hometown of giant panda Chengdu, Sichuan, China. Zhonglong Team focuses on manufacturing, marketing, installation, application and R&D of geosynthetics such as HDPE geomembrane, composite geomembrane, geosynthetic clay liner （GCL）, filament geotextile, biaxial stretch geogrid, etc. We now have 120+ experienced staff and operate 13+ advanced production lines and exported our product and service over 20 countries.