GOST and technical requirements that apply to plastic pipes

Types of polyethylene pipe

By way of manufacturing plastic products is of three kinds:

• polyethylene pipes high pressure (LDPE):
• pipes made of high-density polyethylene (HDPE);
• polyethylene pipes medium pressure (CAP).

Products made from polyethylene different pressure levels, and also have different applications.Consider each separately.

HDPE Pipes

Such polyethylene production process provides products made from it a large enough strength and resistance to high pressure, which is created by the pressure in the middle of the pipe.HDPE pipes are manufactured high-pressure pipelines, resistant to mechanical damage.It is these requirements and presented for these products in accordance with GOST.

HDPE pipe

pipes made of high-density polyethylene is used in cases where the product mechanical strength is not very important.That pipeline is the sewerage system, which lay under the ground with the use of additional protective casing.Also pipes of this type of manufacture are widely used in electrical wiring under the ground.As guests the opportunity to manufacture of corrugated pipes for various purposes.For example, in the trenches for the laying of any shape and depth.At the same time it should be noted that the polyethylene has a characteristic, such as low melting temperature - from 60 ° C to 135 ° C.This fact should be taken into account when applying the pipeline, according to its functional purpose.

Scope polyethylene pipes

According to current state standards, used polyethylene pipes only in the absence of heat.For example:

• to supply cold water users;
• for sewer purposes;
• for electrical work;
• for laying low-pressure pipeline;
• in irrigation system

State standard number 18599 2001 imposes the following requirements for plastic pipes:

• no emissions of harmful substances in the drinking water supply;
• storage PE pipes must be carried out with appreciation of fire safety requirements.

In addition to these general requirements Sewer polyethylene pipes, according to GOST should be provided to ensure appropriate labeling and color.Produce PE pipe only blue or black with 4 longitudinal yellow (or blue) stripes.

Existing labeling

Assignment is determined by the current labeling:

1. for pressure pipe used polyethylene pipes PE32 -100 marks.The numbers in the designation marks indicate the pipe density polyethylene.
2. The lower the density, the higher the pressure at which the product was manufactured.HDPE pipes have a density of 79 or less, HDPE from 80 to 100.
3. GOST 18599 - 2001 prescribes the use of polyethylene pipes for cold water and sewage.

Also standard is regulated and the wall thickness and diameter of the pipe.The maximum permissible thickness of the pipe wall, in accordance with GOST, is 58.8 mm with a 120cm diameter.Such a sewer pipe can withstand the operating pressure of 16 atmospheres.These values ​​are sufficient for arranging the pipeline for cold water supply.