What raw materials does Radmehrplast company use to produce its tanks?

The raw materials used in the production of polyethylene tanks are related to HDPE and MDPE polymers. The grade used in making Radmehrplast tankers is heavy polyethylene 3840 of Tabriz. These materials have good processability, hardness and resistance, and also have the property of being hygienic and food grade.

How are Radmehrplast tanks produced?

The construction and production of polyethylene tanks is generally based on rotational molding technology. Rotational molding or rotomolding in short is one of the processes of forming plastic materials in the form of hollow hollows.

In general, in this method, a certain amount of the raw material of the tank (plastic) is introduced in the form of powder into a mold that is designed in the shape of the final product. This mold is rotated around axes and as a result of the heat applied to it, the polyethylene inside sticks to the walls of the mold and creates a layer on the inner surface of the mold.

The rotation of the mold continues during the cooling phase so that the plastic takes its desired shape and solidifies. When the plastic hardens enough, cooling and spinning are stopped to remove the plastic part from the mold. At this point, the process cycle is repeated again.

How to make sure your tanks are standard?

The engraving of the standard logo on all Radmehrplast tanks confirms the authenticity of this item, however, you can inquire about the code "p. 898465599" from the National Standard Organization.

What are the conditions of warranty and after-sales service of Radmehrplast products and how long does the company guarantee its tanks?

Radmehrplast company guarantees its tanks for up to 10 years and provides after-sales service for its customers for up to 12 years.

Which type of tank is anti-algae?

Multi-layer tanks do not allow sunlight to pass into the tank due to the black middle layer. Radmehrplast company uses raw materials called masterbatch to produce this dark layer, which makes water tankers anti-algae and antibacterial.

Can polyethylene tanks be used to store drinking water and food?

Yes, Radmehrplast tanks are produced from high-quality and sanitary grade raw materials. Single-layer tanks are suitable for use in indoor spaces. Three-layer and four-layer tanks can be used in tropical areas and open spaces and are resistant to sunlight due to having a colored layer. These tanks have the ability to store water for a long time, without changing color, smell and taste. Polyethylene tanks can be recycled at the end of their life, but recycled tanks are not suitable for storing and using drinking water because recycled plastic cannot protect water from the sun and heat. Also, drinking water regulations only allow the use of new plastics, and Radmehrplast has complied with this.

Does the color, smell and taste of the water in the polyethylene tank change?

Algae after decomposition by anaerobic bacteria can cause bad smell, bad taste and change the color of water. Algae growth is also accelerated by the penetration of more light into the tank. Therefore, by placing single-layer tanks in darker and less light environments or using multi-layer tanks, you can prevent the growth of algae in the tank as well as changing the color, smell and taste of water.

What is the difference between horizontal and vertical tanks in terms of quality?

Radmehrplast's horizontal and vertical tanks have differences in terms of design, weight and price, but in terms of quality and production process, they are not different from our other products.

What is the difference between metal tanks and polyethylene tanks?

One of the differences between metal tanks (galvanized) and plastic tanks (polyethylene) is that in metal tanks, due to the continuous contact of water with the tank, especially its welded points, it causes the materials to decompose and poison the water or liquid inside the tank. But due to the hygiene of the raw materials used in the construction and production of plastic tanks, this is not the case and the water is not poisoned.

Why are horizontal tanks more expensive than vertical tanks?

Horizontal tanks are more expensive than vertical tanks due to having a base, more weight and using more raw materials.

How to distinguish a single-layer tank from a multi-layer tank?

One of the ways to identify single-layer tanks from multi-layer tanks can be investigated according to the light transmission. For this, three methods are suggested, which we will discuss further:

  1. In the three-layer tank, it is not possible to see the shadow due to the absence of light. Therefore, you can place your hand on the outer surface of the tank to distinguish whether it is single-layer or three-layer. If the tank is single-layered, you can see the shadow of your hand from the inside due to the light passing through, but if the tank is multi-layered, it is not possible to see the shadow of your hand.
  2. If the inside of the tank becomes dark when closing the tank lid, it means that the only source of light is the tank lid and the tank is multi-layered. But if it remains lit inside the tank after closing the tank door, it means that the light enters through the walls of the tank and the tank is single layer.

    3. We see something when light from it reaches our eyes and if there is no light inside the tank, we cannot see the water level inside the tank. Therefore, if the water level inside the tank is visible, it means that the tank is single-layered, but if it is not possible to detect the water level inside the tank, it means that the tank is multi-layered.

  3. What is the difference between single-layer and multi-layer tanks (three-layer, four-layer, extruded, etc.)?

    The main reason for the difference between a single-layer tank and three-layer tanks, which are sometimes called single-wall and three-wall tanks, is the passage of light or the lack of light passing through the wall of the tank. In a single-layer tank, light enters the tank by passing through the outer layer, while this is not possible in a three-layer tank.

    Single-layer tanks are produced from a white layer, while three-layer tanks are produced from two white layers and a black layer in between, and this black layer does not allow the passage of light and algae to the water. Also, four-layer tanks, in addition to the black layer in the middle, there is a blue layer in the inner wall of the tank, which increases the thickness and strength of the tank and has more antibacterial substances than the rest of the layers. Extruded tanks are also single-layer tanks that are three-layer thick.

    Does freezing water damage the tank? What action is necessary to maintain the resistance of the tank in extreme cold?

    Radmehrplast tanks tolerate cold up to less than 40°C and heat up to over 70°C. In general, polyethylene tanks have more thermal resistance due to their lower transfer coefficient than metal tanks, so at temperatures below zero degrees Celsius when water or liquids freeze, the tank itself is not damaged due to the use of polyethylene materials. to be However, the important thing is that due to the increase in the volume of water or liquids when they freeze, it is necessary to have enough space for the expansion of the liquid in the tank in the cold seasons of the year and in cold geographical areas where it is possible for the liquid in the tank to freeze. would have existed.

    Which tank of Radmehrplast company is suitable for storing acid and chemicals?

    The tanks of Radmehrplast company are also suitable for storing acid and chemicals, but before buying, be sure to consult with the company's experts to make a safe purchase.

    Can Radmehrplast tanks be used as pressure tanks?

    No, the tanks produced in the Radmehrplast factory are storage tanks and can only be used for fluid storage. These tanks are produced for atmospheric pressure and are not suitable for use as pressure tanks.

    What is the reason for installing an overflow in the tank?

    When the floater does not perform its task completely and correctly, the presence of overflow in the tank causes water to exit from the overflow and does not allow water to exit from the tank door, therefore the possibility of breaking the top of the tank is reduced.

    Considering the installation of the floater, is it still necessary to install the overflow on the tank?

    Yes, if the floater also does its job correctly, when the pump is on and has suction, the absence of overflow causes the absence of air inside the tank, and this causes pressure on the pump and eventually burns the pump.