Custom HDPE tanks engineered to DVS 2205, welded by DVS qualified tradesmen, and built to the exact geometry your installation needs.
Industrial Plastics fabricates custom HDPE tanks (high density polyethylene, also specified as polyethylene, PE or PE100) from certified virgin sheet, butt and extrusion welded to DVS 2207 and designed to DVS 2205. These are not rotomoulded commodity tanks: fabrication delivers rectangular, conical, sloped base and open top formats, custom nozzle placement, and wall constructions that moulding cannot produce. Every tank is specified by our technical team against your chemical, temperature and installation envelope.
HDPE properties for tank duty
HDPE is the workhorse of fabricated plastic tanks. It combines a broad chemical resistance envelope with high impact strength, excellent weldability and proven long term creep behaviour, which is why DVS 2205 publishes full design curves for it. UV stabilised black PE100 is the standard specification for outdoor service in the Australian climate.
| Property | Value | Basis |
|---|---|---|
| Material | PE100 certified virgin sheet, UV stabilised grades for outdoor duty | Supplier certificate with every job |
| Density | approx. 0.96 g/cm3 | ISO 1183 |
| Yield strength | approx. 23 to 25 MPa | ISO 527 |
| Continuous service temperature | minus 40 to plus 60 degrees C, duty specific: chemical service derates | DVS 2205 design curves |
| Chemical envelope | Dilute and moderate acids, caustics to 50 percent, sodium hypochlorite, alum, effluent and potable water at ambient temperature. Not suited to strong oxidisers or hot concentrated acids | SDS review on every quote |
| Welding | Butt and extrusion welding to DVS 2207 by DVS qualified welders | Weld records issued with every job |
| Design life | 25 year design basis per DVS 2205 creep data at 20 degrees C | DVS 2205 |
Where the duty sits outside this envelope, hotter service points to polypropylene and aggressive concentrated chemistry points to PVDF. Our technical team confirms the selection from your SDS, or run your chemistry through the Chemical Compatibility Checker first.
What HDPE tanks are used for
Most of the chemical storage we build is HDPE. Water treatment plants run it for sodium hypochlorite, alum and hydrochloric acid storage and dosing. Mining operations use it for reagent storage and hydrometallurgy duty. Food processors use FSANZ compliant grades for washdown and ingredient service, and councils and contractors specify it for effluent, stormwater detention and truck mounted water cartage.
The same material carries our dipping tank and tank liner work: HDPE is the industry standard for hydrochloric acid pickling baths in galvanising, and for relining concrete and steel vessels.
Designed to DVS 2205, welded to DVS 2207
Every fabricated tank is designed to DVS 2205, the German engineering standard for thermoplastic tank design, with wall thickness calculated from the actual chemical, concentration, temperature and service life rather than a generic water rating. Welds are executed to DVS 2207 by qualified welders, with weld records, material certificates and drawings issued under our ISO 9001:2015 quality system certified by SGS.
If you are weighing a fabricated tank against a rotomoulded AS/NZS 4766 tank, our comparison of the two standards explains where each belongs. Potable water applications are fabricated to AS/NZS 4020.
Sizes and geometry
Fabrication frees the geometry. We build HDPE tanks from 2,000 litres to 110,000 litres plus, in rectangular, cylindrical, conical, sloped base and integrally stiffened forms, sized around your installation envelope rather than a mould catalogue. Open tops, baffles, dished ends, custom nozzle and manway placement, integrated bunds sized to 110 percent of primary volume, and double walled construction are all standard scope. Tanks are supplied with lifting points and holding down details designed for the installed location.
Frequently asked questions
A tank made from high density polyethylene. Ours are fabricated from certified virgin PE100 sheet, butt and extrusion welded to DVS 2207 and engineered to DVS 2205, rather than rotationally moulded. That construction allows rectangular, conical and open top geometries and engineered wall thickness matched to the duty.
Fabricated HDPE tanks are designed on a 25 year basis using the DVS 2205 creep curves at 20 degrees C. Actual life depends on the chemical, concentration and temperature, which is why every tank is specified from the SDS rather than a generic water rating.
HDPE suits ambient temperature service; above about 60 degrees C continuous, polypropylene is the better selection, and strong oxidisers or hot concentrated acids call for PVDF. We confirm the right material for your duty, and say plainly when plastic is not the answer.
Yes. Polyethylene, PE, PE100 and HDPE all describe the same material family. PE100 is the pressure rated resin classification we fabricate from.
Every tank is custom engineered, so price follows the specification: size, geometry, chemical duty, wall thickness and fittings. Send the duty and dimensions through the quote form and an engineer prices the actual tank rather than a catalogue item.
Rotomoulded tanks are moulded in fixed catalogue shapes and rated to AS/NZS 4766, typically for water. Fabricated tanks are welded from flat certified sheet to DVS 2205, so geometry, wall thickness and fittings are engineered to your specification. Our comparison resource covers when each is the right buy.
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Send drawings, a sketch, or a description of the duty. An engineer reviews every enquiry and confirms receipt within one business day.