Technical requirements for water tan

1. After the water tank is welded, the solid parts must not be loose, and the connecting parts must not have missing welding or missing parts;

2. The welding seam of the water tank should be full, and the outer welding surface of the water tank should be smooth, beautiful, free of slag, no welds, no pores, no cracks, no dents, separation, or cut hands at the welding joints. Bile welds need to be polished;

3. The flat bottom plate of the water tank should be kept flat;

4. The top of the water tank and the manhole must be fully welded;

5. The connection port of the water tank must be well welded, and at the same time try to keep it vertical, at least the inclination is not more than 1°;

6. The insulation layer is firmly combined with the surface of the water tank, and the appearance is flat. The thermal insulation layer is made of polyurethane foamed plastic or better thermal insulation material; the outer decorative shell is made of stainless steel or other suitable materials, and the surface must not be uneven, scratched or rusty;

7. The water tank is filled with water, and there should be no seepage or leakage, and there should be no obvious deformation. It should be carried out in accordance with the relevant full water test clauses for steel welded atmospheric pressure vessels;

8. When the water tank is erected, it should be kept vertical;

9. The actual water volume of the water tank should not be less than the nominal volume;

10. The stainless steel plate used in the water tank should meet the requirements of GB/T3280. The plate used for the water tank must be 304 stainless steel plate. The thickness tolerance of the inner and outer plates is less than 10%;

11. The carbon steel used in the water tank should meet the requirements of GB/T 700. All iron parts of the water tank must be treated with anti-corrosion treatment, anti-rust paint must be used for two anti-rust treatments, and the exposed parts must be painted twice with silver paint;

12. The protruding parts inside and outside the water tank inlet hole should be flanged or other protective treatments to avoid cutting people.

13. After cleaning, the water tank should be filled with water that meets the requirements of GB5749, and let it stand for 1 hour. The water at the outlet of the water tank should meet the requirements of GB5749.