Business Details
Custom Steel Water Tanks and Raised Garden Beds in Sydney
At gmTANKS, we specialise in manufacturing high-quality corrugated steel water tanks and raised garden beds tailored to meet diverse residential and commercial needs. Established with a commitment to innovation and sustainability, our products are crafted using Bluescope Aquaplate Steel, ensuring durability, safety, and environmental responsibility. Our water tanks are available in round, slimline, and squareline designs, with capacities up to 20,000 litres, while our raised garden beds offer customisable solutions for gardens, schools, and public spaces.We prioritise direct customer engagement, enabling bespoke designs that optimise space and functionality. Backed by a 10-year manufacturing warranty and a 20-year material warranty from Bluescope, our products are engineered to withstand harsh Australian conditions, including bushfire risks. With a focus on local production and Australian materials, we deliver across NSW and the ACT, supporting sustainable practices through recyclable steel and energy-efficient manufacturing processes.
Services
Steel Water Tanks
Raised Garden Beds
Custom Carports
Curved Roofing
Awnings
Highlights and features
- We manufacture tanks locally using high-quality Bluescope Aquaplate Steel for longevity.
- Custom designs ensure optimal space utilisation and aesthetic integration with properties.
- Products backed by a 10-year warranty and Bluescope's 20-year material warranty.
- Eco-friendly solutions with recyclable materials and low environmental impact.
- Specialist expertise in curved steel structures for unique architectural applications.
Associations and certifications
- Bluescope Aquaplate
Services
Steel Water Tanks
Our steel water tanks are custom-manufactured using Bluescope Aquaplate Steel, offering durable storage solutions for residential and commercial properties. Available in round, slimline, and squareline designs, they support potable water storage, greywater reuse, and stormwater detention. Backed by industry-leading warranties, these tanks combine strength, safety, and environmental efficiency.
Raised Garden Beds
Custom-designed raised garden beds made from Colorbond or galvanised steel provide long-lasting, low-maintenance gardening solutions. Ideal for homes, schools, and public spaces, they enhance drainage, deter pests, and allow tailored soil conditions. Available in multiple sizes and shapes, including decorative options.
Curved Roofing
Innovative curved roofing solutions crafted from Colorbond steel deliver structural integrity and modern aesthetics. Suitable for carports, awnings, and pergolas, these custom designs add architectural flair while withstanding Australian climate challenges.
Questions
What types of water tanks do you offer?
We offer round, slimline, and squareline steel water tanks made from Bluescope Aquaplate Steel, with capacities up to 20,000 litres.
Can I customise my water tank or garden bed?
Yes, all tanks and garden beds are made to order, allowing custom sizes, colours, and configurations to fit your space.
Are your products environmentally friendly?
Yes, our steel tanks and beds are fully recyclable, and we use sustainable manufacturing practices to minimise environmental impact.
Do you deliver outside Sydney?
We deliver across NSW and the ACT, including Newcastle, Central Coast, and Canberra.
What warranties apply to your products?
Our water tanks include a 10-year manufacturing warranty and a 20-year Bluescope Aquaplate material warranty.
Reviews (5)
Bob M.
Sep 28, 2019
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I found out about GM Tanks via google and their website. Despite the distance (Maitland to Canberra area) they were both the cheapest, and because they are manufacturers rather than agents, also the most flexible (we needed a non-standard tank size to replace an existing one). Michael delivered it himself, and due to his smarts and ingenious lifting gear, it was by far the easiest tank placement I've done (out of somewhere around 10 all up).
Dani Szikszai
Jan 18, 2019
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Ive bought several raised garden beds from GM tanks the staff were friendly and the service was great. Quality of the beds was also excellent, will buy again!
Nerida Regent
Aug 19, 2018
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I have been involved with this company for many years and have found them to be exceptional quality and service every time. I would have no hesitation in recommending this company to anyone looking for a quality tank and exceptional service
Nik Robertson
Jul 09, 2018
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Our experience with gmTanks has been excellent. They have a quality product backed with friendly and prompt service. We have recommended you to our family and friends.
Anthony Tumeth
Jan 15, 2018
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Gm tanks would be the worst place to purchase a water tank they won't honor warranties they won't reply to emails,text or phone messages if you're looking to purchase a water tank take my advice go elsewhere.