HDPE, polypropylene and PVDF chemical storage tanks, custom fabricated to AS/NZS 4766 and DVS 2207. ISO 9001 certified by SGS. Brisbane workshop, building since 1971.
Industrial Plastics fabricates custom plastic chemical tanks for water treatment, mining, food processing, energy and industrial chemical clients across Australia. Our welders are qualified to the German DVS 2207 standard, significantly more stringent than the minimum AS/NZS welder qualification, and every tank is fabricated under our ISO 9001:2015 quality system, certified by SGS. Material certificates, weld records and pressure test certificates are issued with every job.
Our chemical tank range typically starts at 2,000 L and runs to 110,000 L and beyond. Larger vessels are field fabricated or modular built and welded on site. For standard products and stock items, download our product catalogue (PDF).
Chemicals we routinely store
We fabricate chemical storage and dosing tanks for the full range of industrial reagents. Material is matched to each duty, with UV stabilised grades for outdoor installation.
- Sodium hypochlorite (bleach): PVC, with UV stabilised HDPE for milder duty, typically 5,000 to 30,000 L for water treatment dosing
- Hydrochloric acid (HCl): PP or PVDF, vented or sealed
- Sulphuric acid: PP or PVDF for concentrated, HDPE for dilute
- Caustic soda (NaOH): HDPE or PP, PP for hot duty
- Ferric chloride and ferric sulphate: HDPE for water treatment coagulant dosing
- Alum (aluminium sulphate): HDPE day tanks for council and industrial water plants
- Ammonia and ammoniated solutions: PP construction, full DVS 2207 weld records
- Glycol (HVAC and process cooling): HDPE expansion and storage tanks
- Polymer dosing solutions: HDPE day tanks with mixer mounts and calibrated draw off
- Process water, brine and condensate: HDPE storage and balance tanks
Material selection
Chemical service usually rules in one of three thermoplastics, chosen by chemical, concentration and temperature.
HDPE (high density polyethylene)
Workhorse for chemical storage. Excellent resistance to most acids, alkalis and oxidisers at ambient temperature. Service range minus 40 °C to plus 60 °C. UV stabilised grades for outdoor installation.
Polypropylene (PP)
Specified where service temperature exceeds the comfort zone of HDPE or where chemical compatibility favours PP. Continuous service to around 95 °C. Standard choice for hot caustic, ammonia and many organic chemicals.
PVDF (polyvinylidene fluoride)
For aggressive chemicals where HDPE and PP cannot meet the duty, including concentrated acids, hot bleach and ultrapure water. Premium cost, specified by chemical and temperature.
Standards we build to
Every tank carries documented design and weld records. Manways, nozzles and flanges are built to the drawing and signed off before dispatch.
| DVS 2205 | German thermoplastic tank design standard: static design calculations, wall thickness, chemical resistance and structural verification. |
| AS/NZS 4766 | Polyethylene storage tanks for water and chemicals: design, construction and testing. |
| AS/NZS 4020 | Products in contact with drinking water, used on potable applications. |
| DVS 2207 | German plastic welding standard, significantly more stringent than the minimum AS/NZS welder qualification. |
| AS 1940 | Storage and handling of flammable and combustible liquids, informs bund and venting design. |
| ISO 9001:2015 | Quality management, certified by SGS since 2008. Documented inspection and weld record sign off on every tank. |
Tank options and configurations
- Vented or sealed: sized to chemical, temperature and fill rate
- Bunded or double walled: for AS 1940 and EPA secondary containment compliance
- Custom geometries: cylindrical, rectangular, conical, sloped base and stepped
- Integrated nozzles and instrumentation: level sensors, agitator mounts, sample ports, manways and vents
- Insulation and lagging: for outdoor or high and low temperature service
Industries we supply chemical tanks to
Chemical tanks from our Hemmant workshop are in service across water treatment, mining, food processing and energy plants Australia wide.
- Water treatment: alum, hypochlorite, ferric and polymer dosing
- Mining: slurry, dosing and process chemical storage
- Food processing: compliant ingredient and process tanks
- Energy: caustic, ammonia and hydrogen ready polyethylene
Selected chemical tank projects
Frequently asked questions
We select HDPE, polypropylene or PVDF by the chemical, its concentration and the service temperature. HDPE suits most acids and alkalis at ambient temperature, polypropylene handles hotter duty such as hot caustic and ammonia, and PVDF is specified for aggressive service such as concentrated acids and hot bleach.
Design follows DVS 2205 and AS/NZS 4766, welding follows the German DVS 2207 standard, potable applications add AS/NZS 4020, and bund and venting design references AS 1940. Every tank is built under our ISO 9001:2015 system, certified by SGS.
Our chemical tanks typically run from about 2,000 litres to 110,000 litres and beyond. Larger vessels are field fabricated or modular built and welded on site. We do not take on small bench scale tanks.
Yes. We build bunded and double walled tanks for AS 1940 and EPA secondary containment, sized to the chemical, temperature and fill rate.
Material certificates, weld records and hydrostatic or leak test certificates are issued with every job, with inspection and test plan sign off recorded against critical orders.
Trusted across the industries we serve
Get an engineered quote
Send drawings, a sketch, or a description of the duty. An engineer reviews every enquiry and confirms receipt within one business day.