HDPE Spiral Tanks

HDPE spiral tanks are storage vessels manufactured by spirally winding HDPE or PP strips on a mandrel using automated, computer-controlled spiral-winding technology, creating a seamless and homogeneous wall structure. Unlike standard rotationally molded HDPE tanks, spiral tanks can be designed for much higher wall thickness, larger diameters, and greater capacities with precise mechanical properties. Compared to MS tanks, HDPE spiral tanks offer complete corrosion resistance to a broad range of acids, alkalis, and salts, eliminating the need for internal linings and frequent repainting. The construction method also provides excellent impact strength and crack resistance, making them suitable for aggressive industrial environments and outdoor exposure. For chemical, pharma, ETP, and agrochemical units in Gujarat, these tanks combine structural reliability with chemical compatibility and low maintenance, giving a strong lifecycle advantage.

Reconsky manufactures HDPE spiral tanks from about 100 litres up to 100,000 litres (100 KL), covering a wide spectrum of storage needs from small chemical day tanks to large process or effluent tanks. Common configurations include vertical cylindrical tanks, horizontal cylindrical tanks, rectangular tanks, and square tanks, allowing flexibility in plant layout and space utilisation. Wall thickness is engineered based on design pressure, chemical properties, and safety factors, ensuring adequate resistance to hydrostatic loads and handling stresses. Standard HDPE spiral tanks are suitable for temperatures from around -40 °C to +90 °C, while PP spiral tanks can operate up to approximately +110 °C. Tanks are generally supplied in UV-stabilised black or other colours on request for outdoor service in hot, high-UV climates like Gujarat’s industrial belts.

HDPE spiral tanks are ideal for storing a wide range of corrosive chemicals such as mineral acids, caustic solutions, saline solutions, plating chemicals, and many industrial effluents. Because HDPE has excellent chemical resistance and low permeability, these tanks are frequently used in chemical processing plants, ETPs, water treatment plants, fertilizer units, and metal pickling applications. Food-grade and hygienic variants with smooth, non-toxic internal surfaces can be used for certain food, beverage, and pharmaceutical liquids where HDPE compatibility is confirmed. In agriculture and agrochemicals, HDPE spiral tanks store fertilisers, pesticides, and micronutrient solutions safely without corrosion or contamination. For users in Gujarat, they are particularly attractive in coastal or highly corrosive environments where MS tanks deteriorate quickly under chemical and atmospheric attack.

Reconsky uses imported, virgin-grade HDPE and PP resins along with specialised spiral-winding and extrusion-welding equipment to produce structurally sound, seamless tank shells. The design process typically uses established calculation tools such as RITA software to optimise wall thickness and geometry for given loads and operating conditions. During manufacturing, strict process controls on heating, winding speed, and welding parameters ensure consistent fusion between spirally wound strips and fittings. Finished tanks undergo visual inspection, dimensional checks, and leak testing (often hydrotesting) to verify water-tightness and confirm there are no cracks, pinholes, or weak welds. This rigorous approach gives end users confidence in long-term leak-proof service even under demanding duty cycles and dynamic filling or emptying conditions.

HDPE spiral tanks are lightweight compared to equivalent-capacity MS tanks, reducing lifting equipment requirements and simplifying handling, especially on congested or elevated sites. They do not require internal rubber lining, periodic repainting, or corrosion monitoring, which significantly lowers maintenance effort and cost. The smooth internal surface reduces sludge adhesion and simplifies cleaning, resulting in less downtime during product changeover or preventive maintenance. Because the tanks are corrosion-free and highly durable, the effective service life is long, translating into a lower cost per year of operation despite a potentially higher initial investment. For industries in Gujarat focusing on reliability, compliance, and reduced lifecycle cost, Reconsky HDPE spiral tanks provide a strong value proposition and can be integrated seamlessly with scrubbers, ETPs, and process lines as part of a complete fluid handling solution.