Modular layouts
Configure the array around the available footprint and required capacity.
Rainwater modules
Build underground capacity around your site. A modular PP system for rainwater storage, stormwater attenuation and infiltration projects.
Share your drawings. Let’s define the right supply scope.
01 / PRODUCT OVERVIEW
The module is the starting point. The system comes together through the right layout, envelope and supporting components.
PP modules form the core of an underground rainwater system. Depending on the surrounding envelope and hydraulic design, a module array may be configured for collection and storage, temporary attenuation or infiltration.
Start with the required volume, available footprint, installation depth and proposed surface use. These inputs help define the appropriate module layout and supply scope.
Configure the array around the available footprint and required capacity.
Coordinate the envelope for storage, attenuation or infiltration.
Specify modules, liners, filters and inspection access together.
02 / TECHNICAL INFORMATION
Use this checklist to prepare your enquiry. Model-specific dimensions, capacity and performance are confirmed against technical documentation.
View product catalogue| Product family | PP modular rainwater harvesting system |
|---|---|
| Material | Polypropylene (PP) |
| Colour options | Blue / Black — confirm model availability |
| System function | Storage / Attenuation / Infiltration |
| Dimensions & unit capacity | Confirm with the selected model drawing |
| Loading & burial depth | Subject to structural design and verified test documents |
| Connections & access | Configured to the approved project layout |
| Supply scope | Modules and project-specific supporting components |

A COMPLETE SYSTEM VIEW
Coordinate the module array with pretreatment, the surrounding envelope, pipe connections and inspection access.
Explore supporting components03 / PROJECT APPLICATIONS

Coordinate storage beneath offices, retail and mixed-use sites.

Integrate rainwater management into parks and green spaces.

Plan capacity alongside roads and public facilities.
Installation references from supplied materials; shown as system examples.
04 / INSTALLATION PLANNING
Coordinate each stage with the selected model’s installation instructions and the approved site design.
Read the planning guideReview ground conditions, loading, capacity and access.
Follow the approved excavation, base and lining details.
Coordinate module assembly, pipework and inspection points.
Verify the system before approved backfill and surface work.
05 / DOWNLOAD CENTRE
Original HONGLIANG rainwater system catalogue · PDF
06 / YOUR QUESTIONS
Clear answers for your next project conversation.
Share your required volume, site layout, installation depth and surface use. These help establish the selected model and the documents needed for review.
Suitability depends on the selected model, ground conditions, cover depth and structural design. Confirm the loading criteria and supporting test documentation before specifying.
Storage normally uses a watertight envelope. Infiltration uses an interface appropriate to the surrounding ground. The final arrangement depends on the approved hydraulic and ground-condition assessment.
Discuss liners, geotextiles, filters, inspection access and connecting components as part of the project supply scope.
Include your country, project drawings, required system function, volume if known, preferred colour and timing.
LET’S PLAN YOUR SYSTEM
Tell us where you’re building and what your system needs to achieve.
harris@hongliangglobal.comPrepare your requirements using our local enquiry preview.