Advantages of GFS tanks: Short construction period : we install tank with jack and assemble the steel sheet with bolts and sealant one by one , it is fast and easy to do it . Superior corrosion resistance , service life is more than 30 years : The PH of the steel sheet from 3 – 11 , special steel sheet from 1 -14. Have great corrosion resistantance . Low project cost : Once the tank is installed , the maintance cost is low and easy and convenient to clean , the manhole will be designed to help cleaning . Comparing with traditional tanks , the glass fused to steel tank is in lower cost . Tank volume can be easily expanded : If it is specified before the tank manufacturing that a future expansion is needed, engineer will make the structure suitable for future enlarged capacity. It can be realized by simply adding another rings Beautiful appearance, color can be customized : The tank looks glossy , smooth , and the color can be in white , dark blue , cobalt blue ect.