Engineer-specified alum (aluminium sulphate) dosing tanks for water treatment plants and industrial process water.
Industrial Plastics fabricates custom alum dosing tanks in HDPE (PE100) and polypropylene (PP-H) for liquid alum (aluminium sulphate, Al2(SO4)3) coagulant dosing in potable water treatment, wastewater treatment and industrial coagulation. From 2,000 L. Veolia and Aquatec Maxcon trusted supply.
Brisbane workshop, since 1971. ISO 9001:2015 certified by SGS. Tanks designed to DVS 2205 and welded to DVS 2207 by qualified welders. Potable applications fabricated to AS/NZS 4020.
Standard configurations
- Bulk storage, 5,000 L to 50,000 L. Tank-truck top-fill, atmospheric vent, bottom drain. PE100 with sediment-management baffles.
- Day & dosing tanks, 200 to 5,000 L. Calibrated graduations, level-indicator, pump-mount platforms.
- Bunded & containment, 110% bund. Integrated or stand-alone. Outdoor-rated UV-stabilised lids.
- Twin-tank changeover, Duty/standby skid arrangements with isolation valves and shared bund, common on council water treatment plant builds.
Standards we build to
Sectors we serve
We fabricate for mining, water treatment, food processing, energy and galvanising and powder coating. Each industry page sets out the scope we deliver, the standards that apply and named project examples. For the full list, see Industries we serve.
Frequently asked questions
Bulk storage from 5,000 to 50,000 litres with tank truck top fill and bottom drain, and day and dosing tanks from 200 to 5,000 litres with calibrated graduations and pump mount platforms.
HDPE (PE100) and polypropylene (PP-H), with sediment management baffles in bulk storage tanks.
Potable applications are fabricated to AS/NZS 4020, with design to DVS 2205 and AS/NZS 4766 and welding to DVS 2207.
110 percent bunds, integrated or stand alone, with outdoor rated UV stabilised lids.
Yes. Twin tank changeover skids with isolation valves and a shared bund are common on council water treatment plant builds.
Trusted across the industries we serve







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Considering a rotomoulded alternative? Read comparing fabricated and rotomoulded tanks for alum dosing, our full engineer-grade comparison.