Rotational extrusion tankse They are produced through a helical winding of plastic material (HDPE polyethylene or PP polypropylene) transformed through a process of melting the granule (200°) and deposited in bands of variable dimensions on a mandrel of predefined sizes established by the storage capacity of the reservoir.
The processing of material subjected to the fusion process allows the interpenetration of the windings thus creating a homogeneous cylinder structure (ferrule). procedure of the polyfusion allows you to obtain a single-block product without welding.
Subsequently, suAccessories (nozzles of various sizes, loading pipes, level indicators, manhole, etc.) can be installed on the cylinder (ferrule) according to the customer's needs.
At the end of the accessories installation process, the primer is appliedo (conical, internally sloped, externally sloped) and the roof (conical, flat, flat split into two parts, bolted).
- Duration certified tank life up to 25 years
- The diameters of the tanks vary from 600 to 4.900 mm
- Capacity up to 200.000 litres (on-site installations)
- Seismic certifications according to current regulations
- Suitable for aggressive and dangerous chemical liquids and acids
- Tank construction based on DVS standards 2205 - EN 12573
- The low thermal conductivity allows the omission of any thermal insulation around the ferrule
| VOLUME | DN 1 | D 1 | H 1 | H 2 | DN 2 | D 2 |
|---|---|---|---|---|---|---|
| m3 | mm | mm | mm | mm | Ø mm | h mm |
| 2 | 1.200 | 1.300 | 1.860 | 2.100 | 1.350 | 1.500 |
| 3 | 1.500 | 1.600 | 1.780 | 2.150 | 1.600 | 1.650 |
| 4 | 1.500 | 1.600 | 2.380 | 2.600 | 1.650 | 1.750 |
| 4 | 1.700 | 1.800 | 1.850 | 2.100 | 1.900 | 2.000 |
| 5 | 1.600 | 1.700 | 2.600 | 2.800 | 1.800 | 1.950 |
| 5 | 1.850 | 1.950 | 2.000 | 2.200 | 2.050 | 2.200 |
| 8 | 2.000 | 2.100 | 2.700 | 3.000 | 2.235 | 2.400 |
| 8 | 2.235 | 2.300 | 2.050 | 2.350 | 2.500 | 2.650 |
| 10 | 2.000 | 2.150 | 3.350 | 3.650 | 2.235 | 2.400 |
| 10 | 2.235 | 2.300 | 2.680 | 2.950 | 2.500 | 2.650 |
| 10 | 2.500 | 2.650 | 2.150 | 2.500 | 2.650 | 2.800 |
| 12 | 2.000 | 2.150 | 4.000 | 4.300 | 2.235 | 2.400 |
| 12 | 2.235 | 2.300 | 3.200 | 3.550 | 2.500 | 2.650 |
| 12 | 2.500 | 2.650 | 2.570 | 2.950 | 2.750 | 2.850 |
| 15 | 2.500 | 2.650 | 3.210 | 3.560 | 2.750 | 2.850 |
| 15 | 2.350 | 2.500 | 3.650 | 4.000 | 2.600 | 2.750 |
| 15 | 2.700 | 2.850 | 2.800 | 3.150 | 3.045 | 3.200 |
| 20 | 2.500 | 2.650 | 4.300 | 4.650 | 3.045 | 3.200 |
| 20 | 2.800 | 2.950 | 3.450 | 3.800 | 3.045 | 3.200 |
| 20 | 3.045 | 3.200 | 2.900 | 3.300 | 3.300 | 3.450 |
| 25 | 2.800 | 2.950 | 4.270 | 4.700 | 3.045 | 3.200 |
| 25 | 3.045 | 3.200 | 3.600 | 4.000 | 3.550 | 3.700 |
| 25 | 3.200 | 3.350 | 3.270 | 3.700 | 3.550 | 3.700 |
| 30 | 3.045 | 3.210 | 4.330 | 4.780 | 3.300 | 3.550 |
| 30 | 3.200 | 3.370 | 3.920 | 4.370 | 3.550 | 3.800 |
| 30 | 3.400 | 3.550 | 3.470 | 3.920 | 3.750 | 4.000 |
| 50 | 3.550 | 3.750 | 5.300 | 5.800 | 3.950 | 4.200 |
| 50 | 3.950 | 4.110 | 4.290 | 4.800 | 4.400 | 4.600 |
| 75 | 3.550 | 3.800 | 7.900 | 8.400 | 4.100 | 4.350 |
| 75 | 3.950 | 4.120 | 6.400 | 6.900 | 4.450 | 4.700 |
| 100 | 3.950 | 4.200 | 8.600 | 9.100 | 4.500 | 4.750 |
| 120 | 3.950 | 4.200 | 10.000 | 10.500 | 4.500 | 4.750 |
| 150 | 4.150 | 4.400 | 11.000 | 11.800 | 4.650 | 4.900 |
| 180 | 4.500 | 4.900 | 11.350 | 12.200 | - | - |
Large capacity vertical tanks
The market tanks for the storage and handling of liquids, powders and granules It represents a key component in modern industrial supply chains, thanks to its ability to combine efficiency, safety, and operational versatility. These specialized containers must guarantee the chemical integrity of their contents, mechanical resistance, compatibility with the stored substances, ease of maintenance, and regulatory compliance, especially when dealing with sensitive storage such as chemicals or food products.
The production of such tanks often involves the use of advanced polymeric or composite materials and the adoption of sophisticated molding technologies, including rotational molding (rotomoulding). This process allows for the production of hollow bodies without welded joints, reducing critical points and internal stresses, with excellent consistency and flexibility in formats. Roplast
In the typical rotational molding process, a quantity of plastic material (powder or granules) is inserted into a hollow mold that rotates on one or two axes. During the heating phase, the material gradually adheres to the mold walls, forming a uniform layer. After cooling, the piece solidifies and is extracted, ready for use. A popular feature is that, being free of welds, the finished piece has greater structural uniformity and fewer weak points. Roplast
The advantages of this technology include:
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the production of manufactured goods in small batches at acceptable costs;
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reducing the need for manual finishing;
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minimizing material waste;
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the simplification of molds compared to other complex processes. Roplast
A wide range of industrial sectors exploit these reservoirs and related technologies:
| Sector | Typical applications |
|---|---|
| Chemical | Tanks for storing reagents, corrosive substances, aggressive liquids, acidic or alkaline solutions |
| Food / Drinks | Containers for liquid ingredients, food powders, mixtures, temporary storage of raw materials |
| Industry | Tanks for solvents, industrial oils, washing systems, process liquids |
| Waste / Ecology | Temporary tanks for wastewater, storage of residual liquids, modular containers for separate waste collection or for liquid waste |
| Agriculture | Tanks for fertilizers, pesticides, nutrient solutions, liquid mixtures for irrigation, storage of powders or granules (fertilizers, seeds) |
| Construction / Building Sites | Mobile containers for liquid solutions (water, chemical mixtures), construction site tanks for process fluids, temporary water reserves |
The adoption of these modular and industrially printed tanks allows for scalable and customizable solutions: variable dimensions, adapted thickness, chemical and mechanical compatibility, and the possibility of adding accessories (caps, valves, nozzles, control systems).
In an environment where environmental and safety regulations are becoming increasingly stringent, it is essential that tanks are designed with compatible materials, appropriate certifications, and rigorous quality control. The product life cycle must be considered from the outset: recyclable materials, the ability to repair and disassemble, and a reduction in overall environmental impact.
Large capacity vertical tanks
In short, the production of tanks for liquids, powders, and granules represents a meeting point between materials engineering, advanced molding technologies, and real-world application needs in various sectors. Thanks to modular solutions, well-designed molds, and attention to the chemical and physical characteristics of the final products, it is possible to effectively respond to the growing demands of the industrial and environmental markets..
