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  1. Is the polythene inner liner liable to puncture or other damage ?

    No, the liner will not puncture, since it is 1000 microns thick, and is not a single sheet. It is fabricated from multiple layers of PE, also has a woven scrim fabric reinforcement layer, and is backed by an additional layer of Metallocene.

    Metallocene is a special metallized grade of LDPE, with high impact resistance and tear resistance. Metallocene is tougher than Kevlar. Kevlar is the material used to make bullet-proof vests made for politicians and VVIPs.

  2. What about cleaning ? Will the liner get damaged during the cleaning process ?

    The liner surface is plain and smooth, unlike RCC, and does not promote the growth of algae or other micro-organic flora or fauna. No hard brushing is required for cleaning it.

    Cleaning is a simple process, using cloth, to remove sediment. There is no likelihood of damage to the liner surface.

    The liner itself has a backing layer of Metallocene, which has high abrasion resistance, tear resistance and impact resistance, and is immune to mechanical damage.

  3. What about corrosion of the tank ?

    The steel shell is isolated from the liquid or water contents. Therefore, corrosion by water or liquid contents is ruled out, because the water is never in contact with the steel.

  4. What about external corrosion ?

    The shell is of special ZincAlume steel from BlueScope of Australia -- this is steel with a process coating of Zincalume alloy, composed of Zinc, Aluminium and Silicon.

    Both Zinc and Aluminium have exceptional corrosion protection properties – Zinc by sacrificial action, aluminium by barrier action.

    ZincAlume coated steel has been seen to have four times the life of GI sheet steel, under field conditions, because of high corrosion resistance.

  5. What about deterioration of the liner ?

    The Metallocene-backed polyethylene liner is immune attack by water and most other chenicals.

    No visible deterioration has been seen to occur over extended periods. We claim a design life of 50 years, based on properties of polyethylene, for all water applications and most other applications, if the pH is restricted to a range from 4 to 11.

  6. Do you offer a warranty for the tank ?

    Yes, Rhino offers a ten-years warranty for all water storage applications. In Australia, Rhino offers a 20 year warranty for the same tanks, because the performance standards in Australia are more stringent than in India.

    The warranty covers both the liner and the ZincAlume steel shell.

    For applications involving acids, chemicals and other corrosive agents, special terms apply

  7. What is the corrosion allowance in Rhino tanks, as in the case of steel tanks or GI tanks ?

    As explained above, corrosion is zero in the Rhino tank, hence there is no need for a corrosion allowance.

  8. Is the Rhino tank suitable for potable or drinking water storage ?

    Yes. The Metallocene inner surface of the HydraShield liner is resistant to the formation and growth of algae and fungus. It neither contaminates the water, nor is it affected chemically by the water.

    The HydraShield liner is certified as fit for potable water according to Australian Standards…….American Standards ANSI NSF 61 and AWWAI…..

    We can provide you attested and notarised copies of the certificates.

  9. What is the life of the tank ?

    The design life is 50 years. We offer a ten-year warranty.

    Rhino tanks have high scrap value at the end of their design lives,as the corrugated sheets can be re-used for . Unlike RCC tanks or welded steel tanks, which have either nil scrap value or limited scrap value.

    Further, Rhino tanks can be dismantled, shiofted, re-located and re-assembled easily at another location. Therefore, they have good re-sale value at any time.

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