The plastic rainwater tank has been around for over a decade now and has become the most accepted water tank of its type in Australia. Their popularity is due to several key factors with the main ones being competitive pricing, corrosion resistance and durability as well as the large variety of shapes and sizes. There have been many plastic water tank manufactures start up in the last five years due to the huge demand for urban style rainwater tanks.

What are plastic rainwater tanks used for mainly?
Plastic rainwater tanks are used in urban areas to store rainwater for the purposes of watering gardens, washing cars, flushing toilets and providing for a drinking supply. In rural areas plastic rainwater tanks are the main supply for all of their water usage needs including providing rainwater or river water storage for stock watering.

How are plastic rainwater tanks made?
Plastic rain water tanks are made by moulding or the less common welding process. Plastic tank moulding including rotational moulding and injection moulding and involves using a model shape to form the tank. Plastic tank welding is a process in which two pieces of heat-softened plastic are joined through the application of heat. Examples of this process are hot air and extrusion welding.

What sizes do plastic rainwater tanks come in and are there any other shapes available?
Plastic rainwater tanks differ in size and volume, ranging from small tanks holding a one hundred litres to plastic water tanks as large as 45,000 litres.

Common uses for plastic tanks include rainwater tanks, molasses storage tanks, septic tanks, chemical tanks. The structure of the plastic tank can vary allot. Common plastic tank shapes include cylindrical, square and rectangular.
What sort of plastics are used to make a plastic water tank? Rainwater tanks used for storage are made from a wide variety of plastic chemicals. Polyethylene (PE), a light, chemically- resistant thermoplastic, is the most commonly used plastic resin. Polyethylene resins include linear high density (HDLPE), cross-linked high density (XLPE) and linear low density (LLDPE) resins. Polypropylene (PP) is a light, durable thermoplastic that is denser, stiffer and stronger than polyethylene and has a high melting point. Polyvinyl chloride (PVC) is a durable, transparent thermoplastic that is resistant to non-essential oils but cannot be exposed to some solvents. Polyvinylidene fluoride (PVDF) is a durable thermoplastic that has high resistance to chemicals and abrasion.

What are the benefits of a plastic tank compared to steel tanks?
Plastic rain water tanks have several advantages over the traditional galvanized steel water tanks. Their seamless construction provides them with greater impact strength and superior resistance to corrosion.

These virtually indestructible tanks have a longer lifespan than steel tanks, which can corrode through and leak. Plastic rainwater tanks can easily to handle, and are simple to install. This characteristic provides savings in size, weight and cost. Plastic tanks also cost less overall than steel tanks.

Plastic rainwater tanks are the most conventional, economical, most widely chosen rainwater tank bought these days.

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