introduction spiel

Welcome to Steely Dam Water Tanks, made by Ark Sheetmetal.

We are a small business located in the picturesque hills of Mt Evelyn specializing in manufacture of custom rainwater tanks, garden beds and sheetmetal products.

We also offer rainwater tank lid and base repair/replacement and a full tank installation service.

We are friendly, supportive, professional and committed to providing robust designs, engineered solutions and accurate manufacture in all that we do.

Ark Sheetmetal (formerly Lilydale & District Tankmakers) have been making quality rainwater tanks and custom sheetmetal products for over 30 years. We are passionate about caring for the environment and providing complimentary products for a sustainable future.



Our Products


Water Tanks:
Made from quality Australian steel-refer our General Tank Information page for material options and details. Standard catalogue or custom sizes are welcomed. Unique customer requirements in terms of colour, size, fittings detail, flat or conical lids, removeable lids, slimline shape or round can be accommodated
Round tank sizes range from diameter 800mm up to max diameter 3,250mm. Height range from around 600mm up to 3100mm, subject to the selected diameter.  
Slimline tank minimum width is approx 600mm. Maximum length recommended is approx 3000mm. We use our own Engineered design of external beams and rods to reinforce the slab sides of the slimline tanks. This ensures the tank is accessible and serviceable. The beams are 25mm deep and therefore add 50mm to the total width. Height range typically 600mm to 3100mm, subject to the selected width. 
Typically the material used is corrugated iron, but small water tanks (caravans/header tanks for cooling applications for example) can be made from heavier gauge flat sheet.
Other products include:
- Various rainwater goods such as flashings, fence/timber/roof cappings, rainheads, box gutters, gutter pops, stop ends. Custom or oddball flashings can be manufactured, for example tapered-end flashings to aid assembly, Super Six profile repair patches, roofing duct/vent covers, ornamental pieces (cock houses) to fit over roof ridges/peaks.
- Ducting transition pieces, square/conical etc. Custom diameter pipe offsets/angles.
- Cappings 20/80/100/80/20 profile for A/C. Custom size cappings, typically heavier gauge steel for electric cable protection. Corner cappings.
- Ant caps.
- Custom brackets, either folded or fabricated.
- Raised garden beds, in round or slimline configuration. Optional fitment of stiffening rods to prevent bulging/buckling.
- Nameplates/marker pegs for signwriters/local nurseries.
- Bay window canopies.
- Fireplace covers for external use and fireplace surrounds for internal use.

Our Inventions:
We've come up with our own ideas to solve problems, listed below. You can check these out on our gallery page.
1) Steel sheet carrier/lifter.
2) Adjustable props to aid slimline tank assembly.
3) Corrugations alignment tool to aid slimline tank assembly.
4) Corrugated bracket (patent pending)-great for neat assembly of flat fittings on corrugated surfaces.
5) Ledgie bed (veggie bed with ledge!).