HDPE Geomembrane for Hydraulic Engineering

We make HDPE liners for dams, reservoirs, canals and ponds in our own factory in Guangdong, China. Every roll is tested to GRI-GM13 and shipped directly to buyers in 50+ countries.

Email Us for a Quote WhatsApp +65 8426 5294

The Factory Behind the Liner

15+Years making geomembrane
30M m²Sold every year
50+Countries served
20,000 tYearly HDPE capacity

Water Stays Where You Put It

An unlined canal or pond loses water into the ground every day. An HDPE liner stops that. The sheet does not react with the water, does not crack in the sun, and does not care about frost or heat.

  • Almost zero seepage — permeability below 10⁻¹² cm/s
  • Works from -60°C winters to 60°C summer surfaces
  • Handles fresh, salt and process water across pH 1–13
  • Keeps over 60% of its strength after 1,600 hours of UV testing (ASTM D7238)
A lined pond holding irrigation water on a farm

Six Places This Liner Earns Its Keep

Workers laying HDPE geomembrane on a dam slope

Dams and Levees

Sealing for earth dams and embankments. Textured faces grip steep slopes.

See application
An irrigation canal lined with black HDPE geomembrane

Irrigation Canals

8 m wide panels line canals fast and stop seepage on the way to the fields.

Read about canal lining
A floating geomembrane cover on a water reservoir

Water Reservoirs

Raw water and drinking water storage. Floating covers cut evaporation and algae.

Read about covers
Installing a geomembrane liner in a farm pond

Farm and Storm Ponds

Irrigation ponds, fire-water ponds and stormwater basins that hold water year-round.

Read about farm liners
An industrial evaporation pond lined with HDPE geomembrane

Industrial Wastewater

Cooling basins, effluent ponds and evaporation ponds, stable across pH 1–13.

Read about pond lining
Lined shrimp farming ponds with geomembrane banks

Fish and Shrimp Ponds

Smooth, non-toxic liners that are easy to clean between crop cycles.

See application

The Numbers Behind the Promise

<10⁻¹² cm/s

Permeability

Water passes through at a rate too small to measure in the field.

>2,000 h

Stress-Crack Resistance

Tested per ASTM D5397 — the sheet resists cracking under constant load.

>600 min

Oxidation Resistance

HPOIT per ASTM D5885, so the material ages slowly in sun and warm water.

±3%

Thickness Tolerance

Held edge to edge across the full roll width — the industry standard allows ±10%.

How Thick Should Your Liner Be?

It comes down to water depth and how rough the ground is. These are the starting points we see in most projects.

Irrigation canals and farm ponds1.0–1.5 mmModerate water depth on a smooth, well-prepared base
Water reservoirs1.5 mmThe standard specification we ship for storage projects
Dams and high-head containment2.0 mmHigher water pressure calls for a thicker safety margin
Rocky ground and heavy-duty sites2.5–3.0 mmMaximum puncture resistance, paired with a geotextile cushion

Send us your design and we will confirm the thickness in writing.Ask an engineer

One Email Gets You All of This

A Written Specification

Thickness, surface type, roll width and cushion layer — matched to your water depth and soil, not a guess.

A Price With Lead Time

Factory-direct price per square meter, the production date, and the freight plan to your port.

Free Samples

Real cuttings mailed to your office, so your team can feel the sheet and test a weld before you commit.

Papers for Your File

Data sheet, batch test reports and certificates — ready to drop into your engineering submittals.

HDPE Against the Alternatives

HDPE (ours)PVC linerCompacted clay
Service lifeHDPE · 50+ yearsPVC · 20–30 yearsClay · 10–20 years
PermeabilityHDPE · <10⁻¹² cm/sPVC · 10⁻¹⁰ cm/sClay · 10⁻⁷ cm/s
Chemical resistanceHDPE · pH 1–13PVC · GoodClay · Poor
UV resistanceHDPE · Carbon black protectedPVC · ModerateClay · Not applicable
UpkeepHDPE · LowPVC · MediumClay · High

A detailed material comparison is on our blog.GCL vs compacted clay

Water Projects We Have Supplied

A technician testing a welded geomembrane seam on a lined canal site
-95%water seepage loss after lining

50 km Irrigation Canal, Central Asia

A 50 km canal lined with 2.0 mm HDPE. After lining, seepage loss dropped by 95% and irrigation water now reaches 15,000 hectares of farmland.

50 kmCanal length
2.0 mmSmooth HDPE liner
15,000 haFarmland served
Municipal Water Reservoir, Southeast Asia50,000 m³Drinking water storage for a city of 200,000 residents, lined with 1.5 mm NSF 61 certified HDPE

Made in Our Own Factory, Not Traded

Resin comes in, finished rolls go out, and every step in between happens under one roof in Zhaoqing, Guangdong.

55K

55,000 m² plant — extrusion, testing and packing on one site

8 m

German flat-die lines — rolls up to 8.0 m wide, so your site needs fewer seams

COA

Named resin suppliers — Sabic, Chevron Phillips, Borealis, with a certificate for every batch

100%

Virgin HDPE only — no recycled material in any roll

Aerial view of the Jinseed geomembrane factory in Zhaoqing, Guangdong

Tested Before It Leaves the Building

A geomembrane production line with a technician checking the sheet

Watched While It Runs

Ultrasonic and laser scanners track thickness as the sheet runs, and a spark test finds pinholes too small to see.

The Jinseed in-house geomembrane testing laboratory

Our In-House Laboratory

Every batch is tested for tensile strength, stress-crack resistance and oxidation resistance in our Certified in-house lab.

A tensile testing machine pulling a material sample

Third-Party Checks Welcome

Appoint BTTG or TRI Environmental to sample and seal your goods before loading.

Tested to the Standards Engineers Cite

GRI-GM13The main international specification for HDPE geomembrane
ASTM D3350Material specification for the polyethylene resin itself
>2,000 hStress-crack resistance, ASTM D5397
>600 minHPOIT oxidative resistance, ASTM D5885
2.0–3.0%Carbon black content, ASTM D4218
ISO 9001Certified quality management across production

How a Lined Water Project Comes Together

Preparing and compacting the ground before laying the geomembrane

Prepare the Base

Level and compacted, free of sharp stones and roots. A geotextile cushion goes under the liner on rough ground.

Aligning overlapping edges between two geomembrane panels

Lay the Panels

Panels are deployed to the layout plan with a 100–150 mm overlap along every seam.

Dual-track hot wedge welding of a geomembrane seam

Weld the Seams

Dual-track hot wedge welding for the long seams; extrusion welding for corners, pipes and repairs.

Air pressure test on a welded geomembrane seam

Test Every Seam

Air test at 0.25 MPa for 5 minutes on dual-track welds; vacuum box testing on extrusion welds.

The full procedure is in our installation guide.Download the guide

White non-woven geotextile laid under a black HDPE geomembrane

A Cheap Layer That Protects the Expensive One

Stones in the soil are the main reason liners get punctured. A non-woven geotextile cushion — 100 to 830 g/m² — sits under the liner and takes that abuse instead.

  • Costs a fraction of the liner it protects
  • Also works as a drainage and separation layer
  • Made in the same factory, shipped in the same container

See the geotextile range

Send Your Project Details, Get a Full Answer

Tell us the application, water type, thickness, quantity and destination port. We reply with a suggested specification, a price, a lead time and a container loading plan.

Email Your Specification Chat on WhatsApp

The Full Lining System, From One Factory

Smooth HDPE geomembrane liner roll for canal beds and reservoir floors

Smooth HDPE Liner

The standard face for canal beds, reservoir floors and level areas, 1.0–3.0 mm.

View product
Textured HDPE geomembrane roll with a surface close-up

Textured HDPE Liner

A rough, studded face that grips dam slopes and embankments instead of sliding.

View product
LLDPE geomembrane for ponds with uneven or settling ground

LLDPE Liner

A more flexible sheet for ponds with uneven ground or many corners and fittings.

View product
PET non-woven geotextile roll used as a cushion under the geomembrane

PET Non-woven Geotextile

The cushion and protection fabric, 100–830 g/m², for under or over the liner.

View product

Packed to Survive the Sea Journey

Wrapped geomembrane rolls strapped and stacked in the Jinseed warehouse
Finished geomembrane rolls lined up in the factory yard before container loading

Heavy Cores

Rolls are wound on cores with walls over 10 mm thick, so they do not collapse when stacked.

Triple Wrapping

Two layers of UV-stabilized PE film, plus a tear-resistant woven jacket on the outside.

Container Planning

Roll lengths are planned around 20GP and 40HQ containers to cut the freight cost per square meter.

Loading Report

Photos, checks and seal numbers are sent to you before the container leaves.

Certifications and Third-Party Verification

ISO 9001:2015 certificate held by Jinseed IGS corporate membership certificate of Jinseed Geosynthetics

ISO 9001:2015 Quality System

Covers production of our geomembranes and non-woven geotextiles, with regular audits by accredited bodies.

IGS Corporate Member

We follow the technical work of the International Geosynthetics Society and its current specifications.

In-House Laboratory

Our in-house test methods line up with third-party laboratories, so results stay consistent.

Independent Inspection Welcome

Buyers can appoint BTTG or TRI Environmental to sample and seal goods before shipment.

Files for Your Project Folder

HDPE Geomembrane Technical Data Sheet
PDF · about 217 KB · values for every thickness
Download
Geomembrane Installation Guide
PDF · about 8.6 MB · site preparation, welding and seam testing
Download
HDPE Geomembrane Brochure
PDF · about 672 KB · product overview and applications
Download

Engineering Notes From Our Blog

A lined water channel carrying water through a dry landscape
Service Life

HDPE Geomembrane Lifespan: UV Exposure, Environment and Maintenance

Read article
Hot wedge and extrusion welding techniques for geomembrane seams
Installation

Geomembrane Welding and Seaming: Hot Wedge, Extrusion Welding, Quality Testing

Read article
Workers checking a newly installed geomembrane liner on a slope
Testing

Leak Location and Integrity Testing After Installation

Read article

Questions Water Project Buyers Ask

What thickness of HDPE liner do water projects usually need?

For most reservoirs and canals, 1.5 mm is the standard specification we ship. Irrigation canals and farm ponds with a smooth, well-prepared base often use 1.0 mm. Dams with high water pressure, or sites with rocky ground, usually take 2.0 mm or more. Send us your design and we will confirm the thickness in writing.

How long does an HDPE liner last in a reservoir or canal?

The material carries an expected service life of 50 years and more in exposed conditions, and longer when the liner is buried or covered. The carbon black in the sheet (2.0-3.0%) protects it against UV, and its stress-crack resistance is tested above 2,000 hours per ASTM D5397.

Can the liner be used for drinking water storage?

Yes. NSF 61 certified material is available for potable water projects, so the liner does not add taste, odor or toxicity to the stored water. Please state the NSF 61 requirement when you ask for a quote, and we will confirm it on the technical data sheet for your order.

What temperatures can the liner handle?

HDPE geomembrane keeps its properties from -60°C to 60°C. It is used from cold mountain reservoirs to tropical irrigation canals without becoming brittle or soft.

What ground preparation is needed before laying the liner?

The base must be smooth, compacted, and free of sharp stones, roots and organic material. On rocky or abrasive ground we recommend a protective geotextile layer under the liner. We provide detailed installation specifications with every project quote.

How are the seams between panels joined and checked?

Long seams are joined by dual-track hot wedge welding; corners, pipes and repairs use extrusion welding. Every seam is then tested: air pressure testing for dual-track welds and vacuum box testing for extrusion welds, with destructive peel and shear tests on sample welds.

What is the minimum order and the production time?

Trial orders start from 1-3 tons for regular specifications. Standard products are usually produced within 7-15 days after the specification and deposit are confirmed; custom sizes or peak-season schedules typically take 15-25 days. We confirm the delivery date before mass production starts.

What warranty do you offer?

Quality warranty agreements of 10-20 years are available, depending on the application environment and the thickness selected. The warranty terms for your project are confirmed in writing with the quotation.

Get a Quote for Your Water Project

Email us your specification or drawings, or message us on WhatsApp. We will come back with a price, a lead time and a loading plan.

Application Water type Thickness Roll size Quantity Destination port

Six details are enough for a full quotation. Drawings or tender documents help us quote faster.

info@jinseed-geo.com WhatsApp +65 8426 5294

Head Office — Singapore

182 Cecil Street, Frasers Tower Level 17, Singapore 069547

Factory — Guangdong, China

No. 1 Fenggang North Road, Zhaoqing High-tech Industrial Development Zone

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