Equipment for the production of plastic pipes
Constant growth in production is due to the increasing demand for plastic pipes due to their valuable performance: 
- they are immune to corrosion, have high chemical resistance and the ability to withstand aggressive environments;
- pipes have a long service life;
- does not need cathodic protection;
- does not debug fat accumulation, so the diameter of the pipe does not narrow;
- with the use of plastic pipes reduces heat loss due to low thermal conductivity;
- the probability of destruction of a pipe made of plastic when freezing inside a liquid is lower than that of metal analogs;
- low weight of products makes installation less labor-intensive.
Polybutylene, polyvinyl chloride, polypropylene, polymeric materials and even recyclable materials - plastic bottles or film waste, disposable tableware, hulls from machinery and equipment and other debris can serve as raw materials for the production of plastic pipes.
The equipment is quite simple and few. The basis of all production is an extruder. This is a special machine for making plastic pipes. The whole process of the machine is to extrude( extrusion) the pipe from the hot plastic granulate. Extruders are:
- Screw. The principle of the method is similar to a meat grinder and is most common.
- Non-screwed with disc.
- Combined simultaneously with a disk and auger.
The production line has a continuous closed cycle. The polymer granulate is filled in the hopper of the extruder, where they are melted using ring heaters. The auger creates a rotational motion, whereby the molten plastic passes into the extrusion head and a future pipe is formed there under high pressure. The machine has a vacuum calibration zone where the diameter and wall thickness are formed, as well as the primary cooling of the product. 
Gradually the pipe passes into another cooling chamber until it has completely cooled down. The tube is promoted by a special pulling device with tracks. A pulling device is located behind the pulling device, which forms segments of a given length. At the customer's request, the pipes can be rolled into bays or delivered in dimensional lengths. All production is monitored and coordinated by a logical controller, which monitors the continuity and quality of production.
How the quality control, transportation and storage of
is carried out The finished pipe must be checked for compliance with the following parameters: 
- outer diameter;
- wall thickness;
- the length of the measured segments;
- roundness.
Control is carried out in laboratories by checking the selected control samples from the produced lot. If the product meets all regulatory requirements, the lab technician will issue a certificate of compliance with the quality. After that, the products are delivered to store shelves or delivered to the customer.
Stored finished products should be in a vertical position away from heating appliances and hidden from sunlight. Transport plastic pipes can be any transport, but in a covered body. The coils or measuring lengths should be packed, and the ends of the pipes protected by plugs from debris.
The simplicity of the technological process for the production of plastic pipes, the cheapness of raw materials, and the low labor input allow people, even without large starting capital, to open their profitable business.