Roto Moulded Plastic Water Storage Tanks are made from Linear Low Density Polyethylene/Low Density Polyethylene. These tanks are light in weight therefore, it is easy to fix them at the place of choice. These tanks require no painting, no rotational moulding, product is formed inside a closed mould rotating biaxial in two plains perpendicular to each other. In batch type-rock-N-Roll type Rotational Moulding machines, frame of the machine is turned in a primary axis while mould is rotated in secondary axis. As rotational moulding does not involve any injection pressure and high shear rates, this process offers certain basic advantages over other processes and techniques of plastic processing