Underground galvanized water tank has special double anti-corrosion treatment on the outer wall to meet underground soil corrosion environment requirements, mainly used for urban underground water supply regulation pools, industrial underground fire protection pools, and industrial park underground production water storage.

【Double Anti-corrosion Solution】First: hot-dip galvanizing base layer (≥275g/m²), basic anti-corrosion protection; Second: outer wall epoxy asphalt anti-corrosion paint (dry film ≥400μm, 2 coats), enhanced underground corrosion resistance; Optional third reinforced: glass cloth winding (hot-melt asphalt + glass cloth, 3 layers), for strongly corrosive soil or high groundwater areas.

【Underground Installation Key Points】Foundation: graded gravel pad (300mm) + C20 concrete (200mm); Backfill: non-corrosive sand or original soil (removing large stones and construction waste); Top inspection well (600×600mm, with RC cover); Vent pipe (extended above ground, with rain cap and insect mesh); Liquid level sensor detection tube (with protective casing to ground).

【Specifications】Capacity: 10-2000m³; Max burial depth: 2.5m (standard)/3.5m (reinforced); Anti-corrosion life: 20-30 years; Working temperature: 0-40°C; Service life: 20-30 years.