Manufacturer of polypropylene pipes. Production of polypropylene pipes and necessary equipment for production

Consider manufacturing polypropylene pipes   and fittings for pipelines of water supply and heating, it is necessary with a preliminary detailed description of the materials used for production.

Polypropylene pipes and fittings have a lot of advantagesthat distinguish them from steel analogues:

• they are much easier;
• do not give in to influence of corrosion;
• do not overgrow inside during use;
• do not create vibration and rumbling, as well as other noise;
• do not burst when the water in the system freezes;
• do not carry out an electric charge;
• do not need painting;
• very easy to use.

Polypropylene pipes and fittings can work for more than a dozen years. This is an environmentally friendly product that is successfully used for pipelines of any level of complexity. Therefore, their production and manufacture is widely established throughout the world.

The use of fittings with chrome and brass inserts allows combine these blanks with steel pipes.

The construction of these materials comes out very tight, and this application brings tangible economic benefits.

Polypropylene is the starting material for the polymerization of propylene and ethylene in specific quantities. The resulting material is called a random copolymer PPRC.

On the domestic market today there is no worthy analogue of foreign polymers. We use Finnish RA 130E BOREALIS and Hungarian TIPPLEN CS4-8000 TVK for the manufacture of polypropylene pipes.

The essence of the pipe manufacturing process is simple, and it is not very time-consuming. Speaking about it, the following features should be highlighted:

• low energy costs in the manufacture;
• environmental friendliness;
• for the production, installation and use of one complete line for the production of polypropylene pipes and fittings do not need much space (this is approximately 100 m 2);

Polypropylene pipe rolling extrusion line is a complete cycle of extrusion, calibration, cooling, hoods, etc.

Raw material for work

They are of the following types:

1. Polymers of low and high pressure.
2. Polyvinyl chloride;
3. Polypropylene;
4. Polybutylene.

Types of equipment for manufacturing

Equipment for the production of polypropylene pipes (extruders) are machines of the following types:

• Auger. They function like a juicer or a meat grinder.
• Screwless. They are used to produce billets from mixed materials. The main detail in these mechanisms is the disk.
• Combined. In these mechanisms, the screw part is combined with a disk.

IMPORTANT! The auger type of machines is considered the most common equipment for the production of plastic products.

Lines for the manufacture of plastic pipes, in addition to the extruder, have the following equipment:

1. Feed system.
2. A machine that cuts workpieces.
3. Capacity for calibration and cooling.
4. Pulling mechanism.
5. Mixer.
6. Conveyor belt.
7. Vacuum forming.
8. The accumulating mechanism that performs the laying of blanks.

Raw material selection

When choosing raw materials, the choice is made on granular polymer, but one must carefully look at its expiration date.

And polypropylene and polyethylene practically do not limit these indicators, which makes it more convenient to use.

From an economical point of view, an advantageous copolymer and HDPE.

IMPORTANT! When you open your own production for the manufacture of polypropylene pipes and fittings, it is advised to maintain cooperation with one supplier. Because the change of raw materials requires a change of equipment for the production of polypropylene products.

Manufacturing process

The main equipment that processes raw materials and turns it into a polypropylene pipe or fitting is called an extruder. And directly the manufacture itself takes place in the following sequence:

• Raw materials for the manufacture of pipes and fittings are fed into a special chamber. It is small granules or comes in the form of chips. Also, secondary raw materials that have undergone preliminary processing (grinding) are often taken into operation. Recycled materials are mixed with the main.
• Using electric or gas heating, the poured mass is melted. Temperature indicators in this case range from 230 to 250 degrees. But he does not turn into a liquid, but only becomes viscous. To prevent this viscous heated mass from sticking to the walls of the apparatus, they are coated with Teflon.
• Next, the extruder from the thick mixture extrudes the workpiece to the set size. Usually the length of the workpiece is two and a half meters. The equipment performs all these actions very quickly and absolutely offline. Human intervention is only required to set the right parameters for the job. The best equipment for the production of polypropylene pipes and fittings is capable of producing up to 200 kg of products per hour of work.
• The next step is the cooling of the workpieces. To do this, they are placed in a container for cooling. The cooling process takes place in a couple of minutes. Then it excellently holds the set dimensions. In the cooling tank, plastic lends itself to the formation process, during the process the material is thoroughly rounded and takes on the necessary shapes.
• At the end of the technological process of production, marking is applied to the products, which displays the parameters of the operation of the products, here they affix the batch number and the date of production of the product. Then the blanks are packaged, packaged and sent to storage facilities or to consumers.

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Often they are produced in those enterprises, as pipes.

Only for the production of polypropylene fittings have to install additional equipment (machine).

It does not occupy a large amount of space, but it makes it possible to increase the range of products. For companies, this becomes an important factor, especially in conditions of high competition.

The main problems and difficulties of production

Almost all countries of the world produce building materials. This also applies to polypropylene pipes and other plastic products, the manufacture of which has been excellently established in Russia.

The main problem of the industry lies in the fact that domestic investors are not very actively financing the purchase of new modern equipment.

Many enterprises have to act on old technologies that are losing their relevance at the moment.

One-time capital expenditures could be a guarantee of high profits in the future. But, they do not. Therefore, they cannot create worthy competition to foreign analogues.

There are no external differences when comparing our and foreign polypropylene products. But, practical use shows different results.

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Domestic blanks do not tolerate wear so much, are not so durable, and often have surprises in the form of marriage, which cause a breakthrough.

For the reasons stated above, consumers often prefer more expensive, but high-quality products from German and Turkish manufacturers.

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And in the end it must be added that the manufacture of polypropylene pipes was turned into an automated production, which does not require huge energy and labor costs. Also, this production has almost no waste and does not harm the environment.

In recent years, the number of manufacturers engaged in the supply of polypropylene pipes to the Russian market has grown significantly.

The reason for this is several factors, but only two are of particular importance:

• Increasing consumer demand for products of this type.
• Simple technology for the production of polypropylene pipes.

Many modern Russian entrepreneurs strive to become manufacturers of polypropylene pipes. However, in many enterprises, these tubular products are produced in parallel with other products.

  The main manufacturers of polypropylene pipes in Russia

Production of PP pipes in the Russian Federation is carried out by hundreds of enterprises. However, only a few have popularity.

• The largest Moscow company Sinikon produces plastic products for the installation of hot and cold water supply systems, as well as for sewer systems.
• Two large plants of the YarInterPlast company, one of which is located in the south of Russia, and the other in Yaroslavl, specialize in the production of reinforced plastic pipes, various connecting elements for water supply and sewage systems.
• For 10 years, the Russian company Ikaplast has been supplying components to the Russian market, through which water, gas and chemical pipelines are installed. These systems require high-quality plastic products, so before delivery, all parts undergo various tests in modern laboratories owned by the enterprise.
• The largest Russian company is Politron. The introduction of modern technology allows the manufacture of high quality polypropylene pipes. In addition, the company launched the production of fittings and systems made of polypropylene, which is not subject to rapid fire.
• The Almetyevsk Pipe Plant has launched the production of pipes from both propylene and stainless steel.
• Cosmoplast is the largest supplier of fittings to the Russian market. In addition, the production of sewer and water systems, as well as polypropylene parts, is carried out here.

The list of the main enterprises for the production of polypropylene tubular products and related parts does not end there. In Russia, a huge number of companies working in this area.

  Distinctive features of polypropylene products

The popularity of such products is explained by many reasons, among which the main characteristics are the positive characteristics of polypropylene:

• Polypropylene parts are highly durable.
• The material does not rust and does not rot.
• Polypropylene withstands large temperature differences.
• It does not affect the quality and taste of the water.
• It has a very long life.
• It has a significantly lower weight compared to metal counterparts.
• Lower cost due to simple manufacturing method.

  Manufacturing technology

The main work on the production of polypropylene products is carried out on a special machine for the production of polypropylene pipes, which is called an extruder. Such equipment performs multi-stage processing of the material, which subsequently becomes a pipe.

The production technology of polypropylene pipes involves the following stages of work:

1. Procurement of raw materials in the required quantities.
2. Placing polypropylene in the form of granules or shavings in a special chamber. In some cases, secondary material is added to the main feed.
3. At a temperature of 250 0 C, the raw material melts to form a viscous substance of plastic. Due to the Teflon coating on the inner surface of the chamber, the molten plastic does not stick to the walls.
4. In the extrusion process, products up to 2.5 meters long come out of the extruder.
5. The blanks are placed in special cooling baths. Due to this, the shape of the products lasts a long time.
6. At the last stage, polypropylene pipes are marked, packed and stored.

The equipment for the production of polypropylene pipes works autonomously, and the whole process takes place in a short period of time. The machine is monitored by the operator. He sets the necessary parameters and eliminates the problems that have arisen. The average productivity of the best Russian machines is about 200 kg per hour. An ordinary factory manufacturing plastic products in Russia can produce more than 1000 meters of pipe.

  Equipment for the production of polypropylene pipes

The manufacture of each type of pipe is carried out on its own production line. Each line consists of special units.

Russian enterprises for the production of polypropylene pipes use the following machines and devices:

• Different sized dispensers measuring and supplying raw materials.
• Machine for polypropylene pipes, as the main tool for the manufacture of material.
• Device for pulling and feeding the pipe into the cooling chamber.
• Bathtubs of the cooling system.
• Machines that calibrate finished pipe products.
• A device that measures and cuts finished goods.
• Devices for marking and packaging.

  Raw material

The main types of raw materials that are used in Russia are:

• The homopolymer is propylene. It is suitable for the production of polypropylene pipes and fittings for the sewage system.
• Random propylene copolymer is a foreign raw material that is necessary in the manufacture of pipe products for heating and water supply systems.

The production process of polypropylene occurs automatically from the operation of filling in the hopper of granules, to the release of finished products. All extrusion line equipment is controlled from a single command unit. You just need to download the program for heating the material, transferring it from one mechanism to another, and all other operations will take place automatically. The accuracy of the specified pipe diameter dimensions occurs in a vacuum calibrator. The principle of setting the accuracy of the geometric dimensions is as follows: the pipe enters the device. It is fixed by the outer diameter and locked on both sides in a vacuum calibrator. Since the two covers of the device are connected using rubber gaskets, the coolant cannot leak out. After that, cold water is supplied from the nozzles to the device from the nozzles, the final cooling and solidification of the material takes place.

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Firms

Production of polypropylene pipes.

In the sphere of market relations, the main principle of which is based on a competitive price / quality ratio, the output of products, which, compared to analogues, is a unique offer for the consumer, naturally leads to high and stable profits. Among the areas that are currently profitable for capital investment include the production of polypropylene pipes. This statement is true based on two factors. The presence of growing demand for tubular products and the high quality of polypropylene pipes at a relatively low cost.

High demand for pipes is determined by the construction of new facilities, both residential and industrial, and the need, which will become acute in the next decade, in replacing old metal pipe systems with new ones. The fact is that most of the water and sewage systems of the countries of the former Union, due to corrosion wear, have long been replaced. Polypropylene pipes are not only a more cost-effective alternative to metal pipes, but in many respects they benefit in quality, since due to their flexibility they can withstand significant overloads associated with the most extreme temperature condition   and plus to everything - are more convenient for installation.

Pipe Production Line

Main devices:

SJ-65/30 extruder - 2 pcs.
   SJ-50/30 extruder - 1 pc.
   SJ-25/25 extruder - 1 pc.
   Set of extrusion heads and calibrators.
   Vacuum calibration chamber.
   Cooling chamber
   Pulling device.
   Cutting device.
   Stacker

The main advantages of PP fiberglass reinforced pipes compared to standard PP pipes:

linear expansion coefficient is 75% less (compared to conventional polypropylene pipes);
   no obligatory stripping is required (for pipes reinforced with aluminum foil);
   due to the small linear expansion, the distance between the fasteners increases, which allows to reduce the total number of supports and reduce the cost of installation;
   a fiberglass layer provides pipe strength with a smaller wall thickness;
   18% increased conditional pass;
   simple and quick pipe installation.

Do it yourself

Lines for PP-R pipes

The rapid development of the plastic pipe market is due to the moral and physical deterioration of pipes made of cast iron and steel. Polymer pipes are an optimal replacement for most metal piping networks. Polypropylene pipes are used in heating and water supply systems. For the production of pipes, high-quality heat-resistant polypropylene is used. Polypropylene is the most competitive material in comparison with copper, steel, etc.
  Polypropylene pipes:

   wear resistant
   resistant to aggressive environments,
   environmentally friendly
   not subject to corrosion
   Do not overgrow with carbonate and other deposits.

The service life of PP-R pipes is up to 50 years in cold water systems and up to 25 years in hot water systems. In addition, the ease, simplicity and reliability of installation can reduce labor costs by several times compared with the installation of metal pipes.

The lines are equipped with:

Single screw extruder
   High speed tube heads
   Vacuum calibrator
   Water cooling section
   Haul device
   Cutting device
   Markirator
   Storage device

Polymer pipes are widely used in various fields. They are used in the transportation of drinking water, technical fluids (solutions of acids, alkalis, salts, mineral fertilizers); gas transportation and gas mixtures; when laying various types of sewers; in the protection of power cables; in heating and land reclamation systems; as waterproofing shells for heating mains; as well as forming in monolithic housing construction.

A wide range of applications of polymer pipes is explained by durability, corrosion resistance, low thermal conductivity, environmental friendliness, new laying possibilities.
  Polymer pipes are made from HDPE, LDPE, cross-linked polyethylene, polypropylene and copolymers of propylene, polybutene, PVC.

Pipes from polymeric materials are mainly manufactured by continuous extrusion. The main element of the pipe line is a screw extruder (single screw for HDPE, LDPE and PPS, twin screw for PVC). In the production of pipes from polyethylene and polypropylene, granular polymer compositions are used.

Today, around the world, especially in developed countries, in the construction of water supply, sewage and heating systems, polymer pipes occupy a leading position.

The main consumers of polymer pipes are construction and installation organizations, housing and communal services departments, as well as private developers and construction crews.

Based on world experience, we can conclude that in the near future the growth rate of consumption of polymer pipes will not be lower than in recent years, and the trend of replacing metal pipes with non-metal ones will continue.

Implementation of the project is possible at OJSC Malorita Rayagropromtekhnika (Brest Region, Malorita).

Equipment

Polypropylene (PPR) Pipe Extrusion Line

Reliability and durability of pipeline systems directly depend on the quality and properties of the source material and, of course, on the machine itself on which the tube was produced. The company "Global Group" is engaged in the supply of equipment for the production of polypropylene pipes (PPR). Our company’s machines will help to significantly increase manufacturing efficiency due to high productivity and efficiency. We offer reliable extrusion lines made of high-quality materials, which, if properly used, will last for a long time.

The appearance in the last decade of new polymer materials has led to revolutionary changes in industrial and residential construction, in the installation and maintenance of communal systems. Polypropylene is a colorless thermoplastic polymer material. Along with many other products from this material, pipes and fittings (connecting part) made of polypropylene (PPR) are widely distributed, which have a number of advantages, which makes them ideal for creating pressure head water supply and heating systems.

The advantages of products manufactured using a machine for the production of PPR pipes and fittings

Compared to metal products, PPR tubes have a number of advantages that have caused such a high demand for them recently:

Easy to carry, transported, which reduces the cost of loading and unloading;

Easy to install;

Safe for health;

Low installation cost due to high weldability of propylene;

The service life is 3-4 times higher than the same characteristic of metal analogues;

Unlike steel, plastic is a material resistant to corrosion (does not rust and does not deform);

Easily withstand sharp temperature fluctuations, they are reliable in the winter and never undergo tearing;

Excellent cross-country ability and resistance to various chemical environments;

Polypropylene pipes for heating and other communication plastic systems have excellent sound insulation.

Short description:

The production process of polypropylene occurs automatically from the operation of filling in the hopper of granules, to the release of finished products. All extrusion line equipment is controlled from a single command unit. You just need to download the program for heating the material, transferring it from one mechanism to another, and all other operations will take place automatically.

Fabrication of material for polypropylene   pipes. Any production of polypropylene pipes begins with filling granular polypropylene into a special hopper. Here, the material is melted, the entire cylindrical device is divided into sectors, in each of these departments a certain, strictly controlled temperature is set. Since the auger of the device is constantly rotating, the granules of the substance are mixed and melted. A polypropylene pipe is formed at the outlet of the device by means of special forms under high pressure.

Product shaping takes place in an extrusion die. It is here that forms are established to limit the inner and outer diameter of the product. The head itself is attached to the cylinder of the hopper using a flange.

  The production process of polypropylene occurs automatically from the operation of filling in the hopper of granules, to the release of finished products. All extrusion line equipment is controlled from a single command unit. You just need to download the program for heating the material, transferring it from one mechanism to another, and all other operations will take place automatically.

The accuracy of the specified pipe diameter dimensions occurs in a vacuum calibrator. The principle of setting the accuracy of the geometric dimensions is as follows: the pipe enters the device. It is fixed by the outer diameter and locked on both sides in a vacuum calibrator. Since the two covers of the device are connected using rubber gaskets, the coolant cannot leak out. After that, cold water is supplied from the nozzles to the device from the nozzles, the final cooling and solidification of the material takes place.

In addition to the cooling bath, the pipe is calibrated by a pulling device. In addition to the accuracy of the outer diameter, polypropylene pipes have exact wall thicknesses, so by pulling the part, the guarantee of its inner diameter is also controlled.

The final stage of the production of PP pipes. Full production of polypropylene pipes implies the receipt of a product of a marketable appearance, that is, the required technical parameters and geometric dimensions.

After specifying the exact dimensions to the pipe diameters, the process of cutting them into measured lengths begins. This operation occurs using either guillotine shears (product diameter up to 50 mm) or using circular saws.

An advantage of the second cutting method is the high quality of the pipe end obtained during the cutting process. When using the guillotine, the end of the product PP becomes substandard (slightly flattened).

Technology and raw materials for pipe production

For the manufacture of plastic pipes, various raw materials are used: high and low pressure polymers, polypropylene, polybutene, polyvinyl chloride, etc. Their production is environmentally friendly and uncomplicated; it is based on extrusion. Extrusion is the extrusion of pipes from molten plastic using a special machine (extruder). There are several types of extruders: screw, screwless and combined. The principle of operation of a screw extruder resembles a meat grinder, or juicer. For screwless, the main working part is the disk; they are used, if necessary, to produce pipes from mixed materials. The combined extruder combines both a screw part and a disk. Screw extruders are most commonly used. They are single and two-stage, specialized and universal, single and twin-screw, equipped with a degassing chamber and without it, with screws rotating in one or in opposite directions, etc.

The production of plastic pipes is as follows. The raw materials in granules are filled up with the hopper-receiver of the extruder, where it melts under high temperature. Next, the mass is extruded through the forming head of the extruder, which determines the parameters of the future pipe. After the initial molding, the pulling machine pulls the workpiece into the bath for primary cooling, where, under the influence of pressure, it is finally formed using a calibrating mold. Then there is a cutting and either laying the pipe in stacks (pipes of large diameter), or winding into bays (pipes of small diameter).

Equipment and raw materials

  The full-cycle plastic pipe production line, in addition to the extruder, includes a pipe-cutting machine, a feed system, a bath for calibration and cooling, a mixer, a haul-off device, a conveyor belt, a vacuum moulder and a pipe stacker.

Productivity depends on the size of the pipe: pipe diameter - 20.25, - 80 kg / h, pipe diameter - 32.40.50 - 100 kg / h, pipe diameter - 63.75.90, 110 - 130 kg / h. A line can produce about 1000 meters of pipes per day, depending on the diameter. Lines have different parameters, so you can order machines for your business, and you can save and buy used equipment. The lowest cost of such a set is about 400 thousand rubles.

Granular polymers are purchased for raw materials. It is important to be demanding on its quality and shelf life. Polyethylene and polypropylene are very beneficial materials due to their almost unlimited shelf life. Polypropylene copolymer is one of the best materials for the manufacture of pipes. Its cost is about 50-70 rubles per kg. Low pressure polyethylene (HDPE) is also often used for production, its cost is lower - about 32 rubles per kg and above. The best option would be to arrange delivery from one plant, because a change in raw materials will require a change in the characteristics of the equipment.

Room and staff

For the production of plastic pipes, any room outside the city that has a convenient entrance, where you can locate a workshop, a large warehouse, a bathroom, premises for staff, is suitable. All equipment can be located in the workshop area from 40 sq. M to 200 sq. M. For its maintenance you will need from 3 people per shift. It is necessary to hire technologists, operators on machines, auxiliary workers. The average salary of a technologist is about 50 thousand rubles, workers - about 25-30 thousand rubles.

Requirements

To start production, you will need to obtain permits from the gas service, fire inspectorate, sanitary and epidemiological station, the local department of the State Supervision Service, local executive authorities, etc.

According to GOST 18599-2001, the conditions for the transportation and storage of plastic pipes are as follows.

It is allowed to transport pipes by any type of transport in covered bodies (wagons). To protect the pipes from dust and external influences, they must be closed with plugs and placed in the package. The weight of the pipe coils together with the package should not exceed 1.25 tons, the pipe length should not exceed 5.5 m.

They store pipes in warehouses in a horizontal position far from sunlight and heating appliances. The stack height when storing pipes over 2 months should not exceed 2m. When stored for up to 2 months, the height of the stack should be no more than 3m. Pipe storage is possible for no more than 12 months. Shelf life - 2 years from the date of manufacture.

The main advantages of polypropylene pipes

Longevity of operation

The service life of the pipeline is 25-50 years, depending on the temperature and pressure during operation. Polypropylene pipelines meet the functional requirements of SNiPs and can be used for transportation cold water   under pressure up to 2.0 MPa (20 atm), while ensuring the service life of the pipeline at least 50 years.

When transporting hot water under a pressure of up to 0.6 MPa (6 atm) and constant exposure to a temperature of 60 ° C, the durability of the pipeline is also 50 years, and when the operating constant temperature is increased to 75 ° C - 25-30 years. You can read more about the service life here.
   Constant pressure Pipes made of polypropylene do not overgrow during the entire service life. This is achieved due to the high purity of the inner surface of the pipes (0.003-0.005 mm), as well as the chemical inertness of the material.

Highest reliability

TransFormer polypropylene pipes are absolutely homogeneous and with temperature changes the entire pipe array behaves the same, which ensures the absence of internal stresses during operation. The connection of polypropylene pipes with fittings is carried out by the method of polydiffuse heat welding at a temperature of 260 ° C without using a flame. You can read more about the welding process here. Thanks to this method, a connection is formed that does not differ from the array of the pipe itself.

   Thus, the uniformity of both the pipe itself and the connections of polypropylene pipes with fittings ensures the highest reliability of the entire system, which, of course, is one of the main advantages of using polypropylene pipelines. It is thanks to the highest reliability that polypropylene pipes have become so widespread throughout the world.
   Also, polypropylene pipes are distinguished by: low weight (4-7 times lighter than metal pipes), high culture, manufacturability and installation speed (it takes only about 12 seconds to connect a 20 mm diameter joint), the absence of the “defrosting” effect when the system freezes, and high noise and vibration absorbing ability.
   Transformer pipes do not conduct current, are white and do not require painting after installation. The smooth outer surface of the pipelines allows you to remove dust and dirt from them, falling during installation and operation. If necessary, pipes can be hidden in the walls.
The cost of the TranFormer system of polypropylene pipes is significantly lower than the price of piping systems made of metal and plastic, with higher performance characteristics. Comparison of the cost of pipes you can see here.

From the technological side, the production process is quite simple, with minimal energy, labor-consuming and environmentally friendly. The production line is a continuous, technologically complete cycle.

This line consists of:

• extruder;
• vacuum water baths;
• cooling baths;
• pulling device;
• cutting device;
• receiving tray;
• winding.

The line is equipped with a circular (or planetary saw) and has high productivity and excellent reliability. The planetary saw has automatic digital control: it is simple and reliable. Equipment for the production of polypropylene pipes meets international quality standards.

Pipe lines are equipped with special devices in accordance with the parameters of the manufactured products. Depending on the performance and purpose, the lines can be equipped with loaders, dryers, various tool kits (corresponding to a specific size). Depending on additional conditions, respectively, additional components are needed. For example, if you intend to produce products with a colored strip, then you need a coextruder. If marking is required, a marker is used, etc.

Materials for the manufacture of polypropylene pipes are: random copolymer polypropylene, homopolymer polypropylene, polyethylene, polyvinyl chloride. These materials must be considered when choosing: for indoor or outdoor use. For example, a polypropylene homopolymer at a temperature below zero degrees becomes brittle. Therefore, they must be used for internal pipelines. But polyvinyl chloride is suitable for outdoor sewageas it has high characteristics at low temperatures.

The following stages are included in production:

After the manufacturing process, finished products are packaged and stacked for further sale.

Application area.

The scope of polypropylene pipes is very wide. This is the construction and repair of pipelines transporting liquid and gaseous substances. Polypropylene pipes are used for transporting gases in heating systems, in sewage networks, in sewage systems. Polypropylene is chemically resistant to all substances.

Today, the demand for polypropylene pipes is very high and exceeds all volumes produced. Therefore, equipment for the production of polypropylene pipes will always be in demand.