Underground stainless steel water tank uses SUS304 stainless steel as the main material, with special anti-corrosion treatment on the outer wall (hot-melt epoxy powder coating or FRP winding anti-corrosion layer), meeting the anti-corrosion requirements for underground burial while maintaining the hygiene performance of stainless steel inner wall.

【Anti-corrosion Treatment】Hot-melt epoxy powder coating on outer wall (thickness ≥350μm), dry film adhesion ≥8MPa; Or FRP composite wrapping (thickness 3-5mm), dual protection, service life over 50 years; Cathodic protection device (optional) can further extend service life.

【Installation Features】Factory-made as a whole unit, directly lifted into pit at site; No special waterproofing needed, fast installation; Small footprint without affecting surface use.

【Specifications】Diameter: DN600-DN3000; Capacity: 1-1000m³; Max burial depth: 3-5m; Working temperature: 0°C to +40°C; Anti-corrosion life: ≥50 years.