HBzhan Content Introduction: Rolling plastic storage tanks (tanks, tanks) are made of pure polyethylene or modified plastics (a mixture of different grades of the same plastic), metal materials, using rolling molding technology (also known as rotary molding technology, aerial molding technology), that is, using gravity and three-dimensional motion to apply plastic to the mold, which is cooled and demolded to make a full plastic storage tank, or coated on the inner side of the steel tank body to make a steel lined plastic composite tank with an embedded mesh structure.
　　
　　Rolling plastic storage tankThe properties of storage tanks and tanks depend on the anti-corrosion materials used. The most commonly used corrosion-resistant material for rotational plastic storage tanks (tanks, tanks) is polyethylene (linear low-density polyethylene). The specific characteristics of the rotational molding polyethylene storage tank are the sum of the characteristics of linear low-density polyethylene and the overall molding characteristics of the rotational molding process (i.e. the anti-corrosion performance of the tank and the integrity of the tank without any welds).
　　
Introduction to the characteristics of rotational molding storage tanks (tanks, tanks)
　　
① Rotational molding storage tanks (tanks, tanks) with solvent resistance and antioxidant properties
　　
Rotational plastic storage tanks (tanks, tanks) are capable of withstanding the vast majority of chemicals, particularly inorganic and organic strong acids, strong bases, salts, and most organic solvents. Polyethylene is not resistant to a few organic solvents, such as acetone, chloroform, benzene, toluene, * * *, ethyl acetate, and other solvents. It is not resistant to a few highly reinforcing oxidizing or reducing substances, but can still be used at specific thicknesses (forming a protective layer on the surface). In addition, due to the antioxidant properties of polyethylene, it can withstand weak oxidizing solvents and the tank wall can resist light oxidation, making the tank less prone to brittleness and having a long service life.
　　
②Rolling plastic storage tankTemperature resistance performance of storage tanks and tanks
　　
The temperature resistance performance of all plastic polyethylene storage tanks (tanks, tanks) depends on polyethylene (linear low-density polyethylene). Based on experience, small volume storage tanks can withstand temperatures below 70 degrees Celsius, large volume storage tanks can withstand temperatures below 60 degrees Celsius, steel lined plastic storage tanks can withstand temperatures below 90 degrees Celsius, and gap use tanks can withstand temperatures below 100 degrees Celsius. Polyethylene plastic storage tanks have excellent low-temperature performance and can withstand temperatures as low as -30 degrees Celsius. In addition, polyethylene is a poor heat transfer conductor, so all plastic polyethylene storage tanks (tanks, troughs) have good insulation performance and cannot use jacket type heating or cooling devices. If heating or cooling is required, coil type devices can be used.
　　
③ Rigid strength, specific gravity of the solution contained, and operating pressure of rotational molding storage tanks (tanks, tanks)
　　
All plastic polyethylene storage tanks have a certain degree of rigidity and strength due to their thick walls, arch crown, circular and elliptical vertical and horizontal structures, as well as external reinforcement structures on the tank body. Generally, the vertical top has a higher rigidity and strength than the horizontal top, and the horizontal can hold a higher specific gravity than the vertical. Small volume storage tanks can hold a higher specific gravity than large volumes. All plastic polyethylene storage tanks (tanks, troughs) are generally only used as atmospheric pressure vessels and are not resistant to vacuum and pressure. Steel lined polyethylene storage tanks (tanks, tanks), due to their steel shell and integral plastic inner side, are embedded with steel mesh structures. The rigid strength of steel plastic polyethylene storage tanks is significantly improved compared to polyethylene full plastic storage tanks. Its strength comes from the outer steel and inner plastic layers, and it is a composite rigid strength material that combines soft and hard materials. The strength also depends on the thickness of the steel shell, the thickness of the lining plastic, and the shape of the storage tank. If the outer tank body is a pressure vessel, such as a steel plastic polyethylene storage tank, it can also be used as a pressure vessel, but thicker steel tanks can still withstand certain hydraulic pressures (2-4KG/CM2) and small volumes can withstand certain vacuum pressures (less than 0.8KG/CM2)
　　
④ Integrity of anti-corrosion layer of rotational plastic storage tank (tank, tank)
　　
Due to the integrated molding of the corrosion-resistant layer in polyethylene all plastic storage tanks and steel plastic composite tanks, there are no plastic welds (plastic welds are the weakest point of plastic storage tanks), which demonstrates the characteristics of non leakage and long service life of rotational plastic storage tanks.
　　
⑤ Specifications and models of rotational molding storage tanks (tanks, tanks)
　　
Rolling plastic all plastic polyethylene storage tanks, like general storage tanks, can be divided into vertical, horizontal, and special-shaped storage tanks. As a mold product, our company has designed relatively fixed standard products. The standard varieties mainly consider the size of commonly used volume storage tanks (1-50M3) and the convenient and beautiful installation and use styles. Vertical (flat bottom arch, flat bottom cover), horizontal (circular elliptical shape), and special-shaped tanks (conical bottom type). Also, consider the convenience of transportation. The design thickness of the all plastic polyethylene storage tank is the economic thickness that ensures the rigidity and strength. Steel lined plastic storage tanks are non-standard products that can be designed into various forms of storage tanks (1-150M3) for users. However, due to limitations in rotational molding equipment, processes, and transportation conditions, tank design also has certain limitations. If the maximum diameter does not exceed 4.5 meters, the maximum length does not exceed 13 meters, the maximum design volume is less than 150M3, and the diameter to height ratio cannot be too large (less than 0.8).
　　
⑥ Rolling plastic storage tanks (tanks, tanks) meet hygiene standards
　　
Due to polyethylene being a non-toxic material and the smooth inner wall of the formed storage tank, it can replace stainless steel containers that meet food and hygiene standards at low temperature requirements. Its acid and alkali resistance is much stronger than stainless steel materials, and it can be used to hold various types of food, beverages, alcohol, vinegar, etc.
　　
⑦ Steel lined plastic car tank
　　
As an extension product of steel plastic composite storage tanks, it is currently an ideal anti-corrosion automotive tank. The tank body is designed as a horizontal elliptical, circular, or square circular tank structure with steel beam frame supports, equipped with special devices such as anti wave plates (internally welded plastic plates), composite manholes, fence slots, and discharge outlets.
　　
⑧ Plastic steel lined plastic mixing tank
　　
As an extension product of steel plastic composite storage tanks, it is a reaction equipment for extremely strong acidic substances, capable of withstanding temperatures below 90 ℃, and can be heated or cooled using coil methods. The shape can adopt flat bottomed flat cover, arch bottom arch cover, flat covered arch bottom, flat covered cone bottom and other shapes, and can be equipped with a reducer and anti-corrosion mixing slurry.
　　
⑨ Other characteristics of rotational molding storage tanks (tanks, tanks)
　　
All plastic internal and external anti-corrosion, lightweight, easy to install.
　　
The inner wall of the steel lined plastic storage tank is anti-corrosion, and the outer surface needs to be coated with anti-corrosion paint for easy installation.