Relatively easy to maintain:
*Regular inspection (recommended every six months to one year): Check for any obvious deformation or rust spots on the appearance? Is there any leakage in the weld seam? Internal cleanliness?
*Regular cleaning (recommended 1-2 years, or depending on water quality): Drain the water, manually or mechanically clean the sludge and impurities on the inner wall, and disinfect (necessary for domestic water tanks).
*Check if valves, floating balls, and other accessories are functioning properly.