... Detailed Product Description Vertical water tankWater Tank description: 1) Capacity: 100, 150, 200, 250, 300L 400L 500L 1000L2) Water tank inner diameter: ... 400, 400, 520, 520, 520mm 3) Water tank outer diameter: 480, 480, ... 610, 610, 610mm 4) Thickness of inner tank: 1.5,1.5,2, 2, 3, 3, 3mm ... steel, overcome the disadvantage of porcelain inner tank