HDPE · LLDPE · Smooth · Textured — Sourced From China
HDPE Geomembrane,
Tiered GM13 To GB/T.
2% of project cost. 100% of the risk. The liner is the cheapest layer in a pond, landfill or reservoir — and the only one that cannot be allowed to fail. We source HDPE and LLDPE membrane by application: the right thickness, the right surface, virgin resin proven by lab test, and the welding plan thought through before the first roll ships.
Orders shipped
Countries served
Product categories
Years sourcing China
The Build Selector
Your Application Decides Thickness, Surface And Grade
Find your job on the left — this is the build we'd put in front of you, with an honest ex-works number to anchor the budget. GM13-grade virgin resin unless your engineer signs off on less.
| Application | Thickness | Surface | Grade to insist on | Indicative ex-works |
|---|---|---|---|---|
| Aquaculture / shrimp & fish ponds | 0.5–0.75 mm | Smooth | GB/T virgin | $0.66–1.10/m² |
| Irrigation reservoirs & farm dams | 0.75–1.0 mm | Smooth | GB/T or GM13 | $1.00–1.47/m² |
| Landfill cells & caps | 1.5–2.0 mm | Textured on slopes | GM13, always | $2.20–2.94/m² |
| Mining: heap leach & tailings | 1.5–2.5 mm | Double textured | GM13, always | $2.20–3.67/m² |
| Biogas digesters & covers | 1.0–1.5 mm | Smooth, black | GM13 (UV/heat) | $1.47–2.20/m² |
| Canals & channel lining | 0.75–1.5 mm | Smooth + geotextile cushion | GB/T or GM13 | $1.00–2.20/m² |
| Evaporation & brine ponds | 1.5–2.0 mm | Smooth | GM13 (chemistry) | $2.20–2.94/m² |
Indicative 2024–25 levels, resin-linked — anchors for budgeting, not today's quote. Textured surface adds roughly $0.20/m² per side. LLDPE for high-deformation duties priced on request.
Send your application — get the buildProducer Knowledge
Three Ways To Make "The Same" Sheet
Mills don't volunteer which line your membrane comes off, or what goes in the hopper. The tonne-price index below (blown virgin = 100) is why the question matters.
Blown film · virgin resin
The GM13 build
Extruded as a rising bubble — even thickness, tight quality control, the process behind membrane that passes GRI-GM13 and long OIT numbers. This is what a landfill or tailings engineer is assuming.
Calendered · virgin resin
The honest budget build
Rolled between calenders — a fine sheet for ponds and canals at a friendlier price. Passes GB/T when the resin is virgin. Ask for the production method; an honest mill answers instantly.
Recycled resin
The one that finds you
Reclaimed polymer, often calendered, dyed a confident black. Two-thirds the price of the GM13 build — and it ages in the sun in seasons, not decades. It never announces itself; a lab test finds it.
The OIT test — how a lab exposes recycled resin in 200 minutes
Grades & Specifications
HDPE, LLDPE & LDPE Geomembrane: Every Thickness, Every Number
Five tables — smooth and textured HDPE to GRI-GM13 (ASTM methods), smooth HDPE to GB/T 17643-2011 GH-2S, and LLDPE / LDPE to GB/T 17643 — with density, tensile, tear, puncture, stress-crack, carbon black and OIT for every thickness from 0.3 to 3.0 mm. GM13 is what a landfill or tailings engineer is assuming when the drawing says "HDPE liner"; GB/T is the honest grade for ponds, reservoirs and canals.
Every quote names the standard and thickness from these tables; every batch ships with the mill certificate plus the OIT and carbon-black dispersion sheet — the two tests that expose recycled resin. Rolls up to 7 m wide; the 40'HQ loading plan is run before we quote.
Download the geomembrane TDS (PDF, 4 pages)
HDPE geomembrane · smooth · GRI-GM13
Thickness 0.75 – 3.0 mm · ASTM test methods · landfill cells and caps, heap-leach, tailings, biogas covers, international tenders
Swipe sideways for all grades →
| Property | Test method | Unit | 0.75 | 1.00 | 1.25 | 1.50 | 2.00 | 2.50 | 3.00 |
|---|---|---|---|---|---|---|---|---|---|
| Thickness (min. ave.) · lowest of 10 values | ASTM D5199 | mm | nom. −10 % | ||||||
| Formulated density (min. ave.) | ASTM D1505 / D792 | g/cc | ≥ 0.94 | ||||||
| Tensile yield strength (min. ave.) | ASTM D6693 Type IV | kN/m | 11 | 15 | 18 | 22 | 29 | 37 | 44 |
| Tensile break strength (min. ave.) | ASTM D6693 Type IV | kN/m | 20 | 27 | 33 | 40 | 53 | 67 | 80 |
| Yield elongation / break elongation (min. ave.) | ASTM D6693 Type IV | % | 12 / 700 | ||||||
| Tear resistance (min. ave.) | ASTM D1004 | N | 93 | 125 | 156 | 187 | 249 | 311 | 374 |
| Puncture resistance (min. ave.) | ASTM D4833 | N | 240 | 320 | 400 | 480 | 640 | 800 | 960 |
| Stress crack resistance | ASTM D5397 (App.) | hr | 500 | ||||||
| Carbon black content (range) · dispersion | ASTM D4218 · D5596 | % | 2.0 – 3.0 · 10 views: 9 in Cat. 1–2, 1 in Cat. 3 | ||||||
| Standard OIT / high-pressure OIT (min. ave.) | ASTM D8117 / D5885 | min | 100 / 400 | ||||||
| Oven aging 85 °C 90 d — Std-OIT / HP-OIT retained | ASTM D5721 + D8117 / D5885 | % | 55 / 80 | ||||||
| UV resistance 1600 h — HP-OIT retained | ASTM D7238 + D5885 | % | 50 (Std-OIT not recommended after UV) | ||||||
HDPE geomembrane · textured · GRI-GM13
Thickness 0.75 – 3.0 mm · ASTM test methods · slopes and caps: floors smooth, slopes textured, aggressive slopes double-textured
Swipe sideways for all grades →
| Property | Test method | Unit | 0.75 | 1.00 | 1.25 | 1.50 | 2.00 | 2.50 | 3.00 |
|---|---|---|---|---|---|---|---|---|---|
| Thickness (min. ave.) · lowest individual values | ASTM D5199 | mm | nom. −5 % · lowest of 8 of 10: −10 % · lowest of any 10: −15 % | ||||||
| Asperity height (min. ave.) | ASTM D7466 | mm | 0.4 | ||||||
| Formulated density (min. ave.) | ASTM D1505 / D792 | g/cc | 0.94 | ||||||
| Tensile yield strength (min. ave.) | ASTM D6693 Type IV | kN/m | 11 | 15 | 18 | 22 | 29 | 37 | 44 |
| Tensile break strength (min. ave.) | ASTM D6693 Type IV | kN/m | 8 | 10 | 13 | 16 | 21 | 26 | 32 |
| Yield elongation / break elongation (min. ave.) | ASTM D6693 Type IV | % | 12 / 100 | ||||||
| Tear resistance (min. ave.) | ASTM D1004 | N | 93 | 125 | 156 | 187 | 249 | 311 | 374 |
| Puncture resistance (min. ave.) | ASTM D4833 | N | 200 | 267 | 333 | 400 | 534 | 667 | 800 |
| Stress crack resistance | ASTM D5397 (App.) | hr | 500 | ||||||
| Carbon black content (range) · dispersion | ASTM D4218 · D5596 | % | 2.0 – 3.0 · 10 views: 9 in Cat. 1–2, 1 in Cat. 3 | ||||||
| Standard OIT / high-pressure OIT (min. ave.) | ASTM D8117 / D5885 | min | 100 / 400 | ||||||
| Oven aging 85 °C 90 d — Std-OIT / HP-OIT retained | ASTM D5721 + D8117 / D5885 | % | 55 / 80 | ||||||
| UV resistance 1600 h — HP-OIT retained | ASTM D7238 + D5885 | % | 50 | ||||||
HDPE geomembrane · smooth · GB/T 17643-2011 GH-2S
Thickness 0.75 – 3.0 mm · N/mm = kN/m · aquaculture ponds, irrigation reservoirs, farm dams, canal lining
Swipe sideways for all grades →
| Property | Unit | 0.75 | 1 | 1.25 | 1.5 | 2 | 2.5 | 3 |
|---|---|---|---|---|---|---|---|---|
| Density | g/cm³ | ≥ 0.940 | ||||||
| Tensile yield strength (MD / CD) | N/mm | ≥ 11 | ≥ 15 | ≥ 18 | ≥ 22 | ≥ 29 | ≥ 37 | ≥ 44 |
| Tensile break strength (MD / CD) | N/mm | ≥ 20 | ≥ 27 | ≥ 33 | ≥ 40 | ≥ 53 | ≥ 67 | ≥ 80 |
| Elongation at yield / at break (MD / CD) | % | ≥ 12 / ≥ 700 | ||||||
| Tear resistance (MD / CD) | N | ≥ 93 | ≥ 125 | ≥ 160 | ≥ 190 | ≥ 250 | ≥ 315 | ≥ 375 |
| Puncture resistance | N | ≥ 240 | ≥ 320 | ≥ 400 | ≥ 480 | ≥ 640 | ≥ 800 | ≥ 960 |
| Tensile load stress crack resistance (NCTL) | h | ≥ 300 | ||||||
| Carbon black content · dispersion | % | 2.0 – 3.0 · ≤ 1 view in Cat. 3; none in Cat. 4–5 | ||||||
| Oxidative induction time (OIT) | min | Standard OIT ≥ 100 · High-pressure OIT ≥ 400 | ||||||
| OIT retained after oven aging 85 °C 90 d / after UV 1600 h | % | ≥ 55 / ≥ 50 | ||||||
LLDPE geomembrane · GL-2 · GB/T 17643-2011
Thickness 0.5 – 3.0 mm · settling subgrades, irregular shapes, covers that must stretch rather than tear
Swipe sideways for all grades →
| Property | Unit | 0.5 | 0.75 | 1 | 1.25 | 1.5 | 2 | 2.5 | 3 |
|---|---|---|---|---|---|---|---|---|---|
| Density | g/cm³ | ≤ 0.939 | |||||||
| Tensile break strength (MD / CD) | N/mm | ≥ 13 | ≥ 20 | ≥ 27 | ≥ 33 | ≥ 40 | ≥ 53 | ≥ 66 | ≥ 80 |
| Elongation at break (MD / CD) | % | ≥ 860 | |||||||
| 2 % secant modulus | N/mm | ≤ 210 | ≤ 370 | ≤ 420 | ≤ 520 | ≤ 630 | ≤ 840 | ≤ 1050 | ≤ 1260 |
| Tear resistance (MD / CD) | N | ≥ 50 | ≥ 70 | ≥ 100 | ≥ 120 | ≥ 150 | ≥ 200 | ≥ 250 | ≥ 300 |
| Puncture resistance | N | ≥ 120 | ≥ 190 | ≥ 250 | ≥ 310 | ≥ 370 | ≥ 500 | ≥ 620 | ≥ 750 |
| Carbon black content · dispersion | % | 2.0 – 3.0 · ≤ 1 view in Cat. 3; none in Cat. 4–5 | |||||||
| Oxidative induction time (OIT) | min | Standard OIT ≥ 100 · High-pressure OIT ≥ 400 | |||||||
| OIT retained — after oven aging 85 °C 90 d · after UV 1600 h | % | ≥ 35 · ≥ 35 | |||||||
LDPE geomembrane · GL-1 · GB/T 17643-2011
Thickness 0.3 – 3.0 mm · temporary covers, construction-phase ponds, light containment · black or natural
Swipe sideways for all grades →
| Property | Unit | 0.3 | 0.5 | 0.75 | 1 | 1.25 | 1.5 | 2 | 2.5 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|
| Density | g/cm³ | ≤ 0.939 | ||||||||
| Tensile break strength (MD / CD) | N/mm | ≥ 6 | ≥ 9 | ≥ 14 | ≥ 19 | ≥ 23 | ≥ 28 | ≥ 37 | ≥ 47 | ≥ 56 |
| Elongation at break (MD / CD) | % | ≥ 560 | ||||||||
| Tear resistance (MD / CD) | N | ≥ 27 | ≥ 45 | ≥ 63 | ≥ 90 | ≥ 108 | ≥ 135 | ≥ 180 | ≥ 225 | ≥ 270 |
| Puncture resistance | N | ≥ 52 | ≥ 84 | ≥ 135 | ≥ 175 | ≥ 220 | ≥ 260 | ≥ 350 | ≥ 435 | ≥ 525 |
| Carbon black content · dispersion (black only) | % | 2.0 – 3.0 · ≤ 1 view in Cat. 3; none in Cat. 4–5 | ||||||||
| Oxidative induction time (OIT) | min | ≥ 60 | ||||||||
| Low-temperature impact brittleness · dimensional stability | Passed · ± 2.0 % | |||||||||
| Water vapour permeability | g·cm/(cm²·s·Pa) | ≤ 1.0 × 10⁻¹³ | ||||||||
Min. ave. = minimum average value. MD = machine direction, CD = cross direction. GM13 values are the GSI specification the mill certifies to; GB/T values are the national-standard minimums (≥) or maximums (≤). OIT — the mill selects standard (D8117) or high-pressure (D5885) OIT to prove antioxidant content. We run OIT and carbon-black dispersion on your batch before the balance payment.
The Surface Question
Smooth Is For Floors. Textured Is For Slopes.
A smooth liner on a steep slope is a slide: the soil cover, the protection geotextile, sometimes the whole lining sandwich creeps downhill. Texturing — a rough spray-on surface — locks friction into the interface. The rule of thumb we quote by: floors smooth, slopes textured on the soil side, aggressive slopes double-textured.
The cost logic is mercifully simple: texturing adds roughly $0.20/m² per side at current levels, and double-texturing behaves like adding about half a millimetre of material. Cheaper than re-laying a slipped slope — we've seen that invoice.
The Seam Is The Weak Point
Buy Wide Rolls. Weld Fewer Metres.
Liners don't leak in the middle of the sheet — they leak at seams. Chinese mills roll HDPE up to 7 m wide, and every extra metre of width is metres of field weld you never have to make or test. On a hectare of pond, 7 m rolls versus 5.8 m rolls remove kilometres of seam over the project's life.
The seams you do make need a proper wedge welder — dual hot wedges, an air test channel down the middle, and spare parts on site. We ship the welder and its spares in the same container as the liner, because a crew waiting on a heating element burns money faster than any material saving.
One 40'HQ by thickness · 7 m rolls · real loading data
41–82 rolls per container depending on thickness; ~27 t per 40'HQ. Protection geotextile or a welder rides along in the same box when space allows.
Plan my containerBefore It Ships
The Lab Sheet Arrives Before The Balance Payment
Our standard membrane inspection: thickness micrometering across the roll (thin spots hide at the edges), density and melt-flow checks against the resin certificate, and the decisive one — an OIT oxidative induction test that separates virgin resin from recycled in a single lab afternoon. For GM13 tenders we align the full test battery (tensile, tear, puncture, stress-crack, carbon black content and dispersion) to what your engineer's checklist actually requires.
Photos, lab sheets and roll numbers reach you while the goods sit at the mill — leverage you don't have once they're on the water.
Straight Answers
Geomembrane Sourcing FAQ
What thickness of HDPE liner do I need?
By application: fish and shrimp ponds run 0.5–0.75 mm, irrigation reservoirs 0.75–1.0 mm, landfills and tailings 1.5–2.5 mm with texturing on slopes, biogas 1.0–1.5 mm. If a seller quotes thickness without asking what the pond holds and how steep the slopes are, they're quoting a number, not a liner.
What's the difference between GM13 and GB/T membrane?
GRI-GM13 is the international benchmark — it pins down OIT (antioxidant life), stress-crack resistance, carbon black content and dispersion, batch by batch. GB/T is the Chinese national standard, honest and adequate for ponds and canals at virgin resin. The danger isn't GB/T — it's recycled resin sold as either. That's what the OIT test catches.
How do I know I'm not getting recycled resin?
You can't by eye — recycled sheet is dyed black and looks factory-fresh. A lab OIT test settles it in an afternoon: virgin GM13 resin holds out past 100 minutes standard OIT; recycled collapses early. We commission the test on your actual batch and send the sheet before you pay the balance.
Do you supply the welding equipment too?
Yes — wedge welders and extrusion guns, with the heating elements, rollers and consumables that actually stop a crew mid-job, shipped in the same container as the liner. One shipment, one set of documents, and the site can start welding the day the container opens.
Can you deliver inland — sites far from a port?
Yes. Beyond the classic sea routes we run overland road and rail deliveries for inland projects — real truck-by-truck costings from the mill to the site, not an FOB price that ends at a port you can't use. Send the site location and we quote the whole chain.
Build-Matched Quote
Liner, Grade
& Lab Proof
Tell us what the liner holds, the area, and the slopes. We come back with thickness, surface, grade, the welding plan — and a landed price with the lab tests built in. Usually within one business day.
OIT lab test on your batch before balance payment
Production method & resin tier named on the quote
Prefer chat? Message us on WhatsApp
Request received
Thank you — we'll come back within one business day with the build, the grade and a landed quote.
Something went wrong
Please message us on WhatsApp and we'll pick it up right away.