Streamline tanks are oval tanks (equivalent to the Australian slimline corrugated tank). Space saving and less conspicuous as their long straight sides allow them to fit flush against a wall and will even tuck under the eaves of a home. The height can be chosen so as to even fit beneath a window. Streamline tanks have a modern, appealing look to them and fit in with most new house designs. 




  • Streamline tanks have additional bracing to stop the long walls bowing with water pressure. These braces are stainless steel (to prevent corrosion).
  • Tank sides – galvanised corrugated steel.
  • Thickness of steel – in most cases 0.8mm. The sections are joined using stainless steel rivets.
  • Base – underside coated with a rubberised bitumen paint that prevents corrosion.
  • Roof – made of flat sheeting with a 400mm manhole and a lid. The gutter down pipe normally enters the tank through a hole in the lid. This should be a close fit to stop light entering the tank and is normally done on site by the customer so as to ensure the correct position.
  • Outlets and overflows – standard fittings include a 40mm threaded outlet and a 40mm threaded overflow and two eye bolts (to fasten the tank to its stand).



  • A leaf trap that fits into the manhole. This consists of a stainless steel mosquito-proof mesh that prevents leaves and other debris from entering the tank.
  • Additional outlets / overflows can be fitted according to the customers requirements.




Please Note: Not all roof/gutter combinations are an ideal match for a corrugated steel tank. To ensure the long-term longevity of your tank please click here to check tank compatibility. The alternative option is to have your tank painted internally with a food grade polyurethane paint.



Litres Width Length Height Price without coating Price with coating
700 800mm 1300mm 800mm R 3 305.00 R4 055.00
920 550mm  1300mm  1500mm  R 4 020.00 R5 020.00
1080 800mm 1800mm 800mm  R 4 070.00 R5 170.00
1300 800mm  1300mm 1500mm  R 4 450.00 R5 650.00
2000  875mm  1300mm 2200mm  R 7 120.00 R8 720.00
2000  875mm  1800mm 1500mm  R 7 120.00 R8 720.00
2600  875mm  1600mm  2200mm  R 8 070.00 R9 970.00
3000  875mm 1825mm  2200mm  R 10 450.00 R12 550.00