Galvanized sheet tank

Hot-dip galvanized corrugated steel panels are bolted into a rigid wall that carries the full water load, while a food-grade PVC / TPU inner liner keeps it watertight — it ships flat and assembles on site without concrete or excavation.

The steel wall takes the hydrostatic load instead of relying on the tarpaulin to self-support, so it stays stable at large diameters; one large tank can replace many small tarpaulin units.

Yes — the liner is replaceable independently of the steel frame, so the galvanized wall stays in use and only the inner membrane is swapped, lowering long-term cost.

It is widely used for tilapia, catfish and shrimp grow-out, biofloc and farm reservoirs, especially where a relocatable, semi-permanent large tank is preferred.

Yes — a galvanized stock tank fish pond is a proven format for commercial tilapia, catfish and shrimp grow-out. The corrugated galvanized steel wall carries the hydrostatic load at large diameters where a tarpaulin alone would deform, and the food-grade PVC or TPU inner liner isolates the fish from the steel. SIGMA's galvanised fish pond tanks ship flat and assemble on site without concrete, from ~5 m³ (Ø 2.4 m) up to ~1,060 m³ (Ø 30 m). A galvanized tub fish pond at Ø 3.6–5 m is a common entry-scale choice for biofloc or RAS nursery work.

Yes — a galvanized water trough fish pond is essentially a smaller version of our galvanized sheet tank, built the same way: bolted galvanized panels with a food-grade liner. For small-scale or backyard fish keeping, a trough-sized tank (Ø2.4–3.6 m) is the practical entry point; for commercial grow-out, step up to the larger-diameter models.