Home » Products » Geomembrane » HDPE Geomembrane » HDPE Geomembrane Liner
  • HDPE GM13

  • Lianxiang

Product Description

HDPE Geomembrane is a kind of waterproofing obstructing material produced with High Density PolyEthylene as the basic raw material.

Classified by smoothness of the surface, it can be divided into smooth geomembrane with double flat and smooth layers and textured

geomembrane with one or two textured surface;

Classified by raw material, it can be divided into HDPE geomembrane, LDPE geomembrane, EVA geomembrane.



Anti-seepage,Water proof,Impermeable

Barrier for environmetnal containment



Our service

1, Quality stable

2, Shipment in time

3, Quickly response

4, Many years supplying experience.

5, Installation guide

6, Related accessaries and installation machine can be provided---welding machine, welding seam testing tool


Geomembranes have been used in the following environmental, geotechnical, hydraulic, transportation, and private development applications:


As liner


As covers

· As liners for potable water

· As liners for reserve water (e.g., safe shutdown of nuclear facilities)

· As liners for waste liquids (e.g., sewage sludge)

· Liners for radioactive or hazardous waste liquid

· As liners for secondary containment of underground storage tanks

· As liners for solar ponds

· As liners for brine solutions

· As liners for the agriculture industry

· As liners for the aquiculture industry, such as fish/shrimp pond

· As liners for golf course water holes and sand bunkers

· As liners for all types of decorative and architectural ponds

· As liners for water conveyance canals

· As liners for various waste conveyance canals

· As liners for primary, secondary, and/or tertiary solid-waste landfills and waste piles

· As liners for heap leach pads

· As covers (caps) for solid-waste landfills

· As covers for aerobic and anaerobic manure digesters in the agriculture industry

· As covers for power plant coal ash

· As liners for vertical walls: single or double with leak detection

· As cutoffs within zoned earth dams for seepage control

· As linings for emergency spillways

· As waterproofing liners within tunnels and pipelines

· As waterproof facing of earth and rockfill dams

· As waterproof facing for roller compacted concrete dams

· As waterproof facing for masonry and concrete dams

· Within cofferdams for seepage control

· As floating reservoirs for seepage control

· As floating reservoir covers for preventing pollution

· To contain and transport liquids in trucks

· To contain and transport potable water and other liquids in the ocean

· As a barrier to odors from landfills

· As a barrier to vapors (radon, hydrocarbons, etc.) beneath buildings

· To control expansive soils

· To control frost-susceptible soils

· To shield sinkhole-susceptible areas from flowing water

· To prevent infiltration of water in sensitive areas

· To form barrier tubes as dams

· To face structural supports as temporary cofferdams

· To conduct water flow into preferred paths

· Beneath highways to prevent pollution from deicing salts

· Beneath and adjacent to highways to capture hazardous liquid spills

· As containment structures for temporary surcharges

· To aid in establishing uniformity of subsurface compressibility and subsidence

· Beneath asphalt overlays as a waterproofing layer

· To contain seepage losses in existing above-ground tanks

· As flexible forms where loss of material cannot be allowed.

Product Parameters

GRI-GM13 standard



Test Value 


Company name

Shandong Lianxiang Engineering Materials Co.,Ltd.


Thickness, mm

lowest individual of 10 values - %









Density, g/cm3



Yield strength, N/mm









Break strength, N/mm









Break elongation, %



Yield elongation, %



Tear resistance, N









Puncture resistance, N









Stress crack resistance, hr



Carbon black content, %



Carbon black dispersion, Category

9 in Categories 1 or 2 and 1 in Category 3


Oxidative Induction Time (OIT) (min. ave.) (5)

(a) Standard OIT - min.

— or —

(b) High Pressure OIT - min




Oven Aging at 85°C

(a) Standard OIT (min. ave.) - % retained after 90 days

— or —

(b) High Pressure OIT (min. ave.) - % retained after 90 days




UV Resistance (7)

(a) Standard OIT (min. ave.)

— or —

(b) High Pressure OIT (min. ave.) - % retained after 1600 hrs (9)

N.R. (8)





ISO9001 2015 LX





1,Is it Fish Safe as pond liner?

HDPE is fish safe and can be left exposed.

2,What is the UV (ultraviolet) Resistance?

It’s a measure of how long the geomembrane lining will last in exposed conditions to the sun. HDPE have excellent UV resistance and will expand the uselife under the sunshine. 

3,Do I need a Geotextile cushion underneath the geomembrane?

You need a geotextile cushion under the lining if you have any sharp angular rocks or round rocks bigger than ¾”. Commonly you will use 150g/sqm nonwoven fabric as a cushion geotextile up to 1” minus rock.  A 4 -6” lift of sand or select soil can also be used for a proper sub grade cushion as well. 

On small decorative pond you could use carpet remnants as a cushion.

4,How to Secure your pond liner?

The simplest method for securing your pond liner is an anchor trench. This runs around the outside of your pond, approximately 500mm from the edge, and should be dug to about 300mm deep by 300mm wide. The liner should lap into the trench, be covered by a layer of matting, then the soil replaced over the liner. Grass can then be laid up to the edge of the pond. Pls contact us to get more methods.

How to install HDPE geomembrane and inspect weld seam

A. Site foundation treatment

1, Before laying HDPE geomembrane should be laid substrate for a comprehensive inspection, laying substrate should be solid, flat, vertical depth of 25mm can not have roots, rubble, stones, concrete particles, steelhead, glass chips and other debris that may damage the geomembrane. Compaction with wheel compactor to remove the car marks, footprints and ground bumps. In addition, ground bumps larger than 12mm should also be shoveled or compacted.

2, When HDPE geomembrane is laid on the backfill, the compaction of the backfill should not be less than 95%.

3, the site foundation should be free of seepage, silt, water, organic residues and harmful substances that may cause environmental pollution, the corner of the foundation should be rounded and smooth, in general, the radius of its arc should not be less than 500 mm

B, HDPE geomembrane installation technical requirements.

1, The laying and welding of HDPE geomembrane should be carried out at a temperature above 5°C and wind force below level 4 without rain or snow.

2、Construction process: Geomembrane laying → lap welding seam → welding → site inspection → repair → re-inspection → backfill (fish ponds backfill or not according to need).

3、The lap width of the seam between the membrane and the film is not less than 80mm, and usually the seam should be arranged in a direction equal to the maximum slope line, that is, along the slope direction.

4, When laying, should try to avoid the production of artificial folding. When laying, the amount of expansion and deformation caused by temperature change should be reserved according to the magnitude of local temperature change and the performance requirements of HDPE geomembrane, in addition, the amount of expansion and contraction of geomembrane should be reserved according to the topography of the site and geomembrane laying to adapt to the uneven settlement of the foundation.

5, After laying, should minimize walking on the membrane surface, handling tools, etc. Any objects that can cause harm to the HDPE geomembrane should not be placed on the geomembrane or carried on the geomembrane to avoid accidental damage to the HDPE membrane.

6, HDPE membrane construction site of all personnel are not allowed to smoke, do not wear shoes with iron nails or high-heeled hard-soled shoes to walk on the film surface, not allowed to engage in all activities that may damage the impermeable membrane.

7, HDPE geomembrane laying is completed,  before not covered with a protective layer, one 20-40Kg heavy sandbag should be placed in the corners of the membrane every 2m-5m distance to prevent the geomembrane is scraped up by the wind.

8, HDPE geomembrane should be affixed with the support layer and should not be folded or overhung.

9, When the geomembrane is constructed in sections, the upper layer should be covered in time after laying, and the exposure time in the air should not exceed 30 days

10, The HDPE geomembrane anchoring must be constructed according to the design. In places where the terrain is more complex in the project, the construction unit proposes other anchoring methods, which should be approved by the design unit and the supervision unit.

C. HDPE geomembrane welding requirements:

1, The lap surface of HDPE geomembrane welds shall not have impurities such as dirt, sand, accumulated water (including dew) that affect the welding quality, and should be cleaned up during welding.

2, At the beginning of welding every day (early morning and after lunch break), trial welding must be carried out on-site first, and then formal welding must be carried out after passing the test.

3, The welding of HDPE geomembrane should be welded by double-track hot-melt welding machine. Extrusion welding or hot-air gun welding should only be used in places where repair, covering or hot-melt welding machine cannot reach.

4, During welding, the working temperature and speed of the welding machine should be adjusted and controlled at any time according to the temperature and material properties.

5, The HDPE film at the welding seam should be fused as a whole, and there should be no virtual welding, missing welding or excessive welding. The joined two layers of HDPE geomembrane must be lapped flat and soothed.

D, Welding seam quality control

1, With the progress of construction, it is required to check the quality of HDPE film welding in time, and to make up the welding with a hot air gun or plastic welding gun at any time for leakage and false welding parts. The inspection is carried out in three steps, namely visual inspection, inflation inspection and damage test.

2, Visual inspection: see if the two welds are flat, clear, wrinkle-free, transparent without slag, bubbles, leaks, melting points or weld set wraps, etc. Visual inspection is mainly for detailed inspection of the appearance of the laid geomembrane, weld quality, T-welding, substrate debris, etc. All constructors should carry out this work in the whole construction process.

3, In addition to visual inspection of the tightness of all welds, vacuum testing should also be used, and the parts that cannot be vacuum tested should be strengthened self-inspection.

4, Inflatable inspection: inflation strength is 0.25Mpa, no air leakage for 2 minutes, considering that the coil is soft and easy to deform, the allowable pressure drop by 20%

5, When the samples taken on the double-track weld are subjected to the tensile test, the standard is that the weld is not torn apart and the mother is torn and damaged during the peeling and shearing tests. At this time, the welding is qualified. If the sample is unqualified, a second piece should be taken from the original weld, and if three pieces are unqualified in a row, the entire weld should be reworked

6, The samples that pass the test will be archived.

7, Defects found in visual inspection, inflatable inspection, and damage test should be repaired in time, and those that cannot be repaired immediately should be marked to prevent omission during repair.

8, In the visual inspection, it is found that there are defects such as holes on the film surface, and if there are missing welding, virtual welding, or damage in the welding process, it should be repaired with fresh base metal in time, and each side of the repair scar exceeds the damaged part by 10-20cm. and keep records.

9, For the repaired weld, a detailed visual inspection is generally required to confirm that the repair is reliable before releasing.

Company Profile

Shandong Lianxiang Engineering Materials Co., Ltd. is a trade subsidiary belonging to Lianxiang group. The group are founded in 2009 owns several trade branches and production lines.

Shandong Lianxiang Engineering Materials Co., Ltd. is registered in 2014, 40 employees with sales, technical and construction teams, focus on domestic and foreign trade, products research 

and  design. Supply self-produced and externally sourced products, various geosynthetics and other related products, such as geomembrane, geocell, geotextile, GCL, 

geocomposite, accessories and so on. Total annual sales is more than 100 million dollars in 2020. Relying on our strong sales and trading capabilities, as well as supply chain control ability,

 we keep expanding more quality products and assist local factories without export teams to go out of China to the world, connecting foreign customers with quality factories.

The production lines focus on production and development all kinds of geosynthetics, such as geomembrane, geocell, geonet, woven and nonwoven geotextile, GCL, geocomposite and so on.

Our products are widely used in basic construction fields such as highways, railways, airports, coal mines, water conservancy, electric power, soil and water conservation, and green environment.

We have passed the ISO9001 quality management system and SGS audit, has a complete production and quality control system, sales, service and warehouse management system to ensure 

product quality and supply ability.

We are aiming to provide customers with the most satisfactory products and services, and are working on protecting our global environment.