Specially designed corrugated outer surface makes tubing are resistant to stress. Thanks to flexible tubing structure any seismic movement of the soil did not influence them.

Characteristics of polyethylene provide resistance to being in the wastewater chemicals.

Temperature-resistant up 80oS

The smooth inner surface and low coefficient of friction provide high speed transmission drains. The degree of smoothness of the inner surface of tubing Firat (FIRAT) is close to the index of smoothness of the surface of the glass, so the tubes do not form deposits.

Corrugated tubing can be used not less than 50 years and work with, like the first day of pads.

Owing to the peculiarities of the molecular structure of polyethylene corrugated tube elastically deformed under the influence of loads, absorb external loads, and again take its original shape. Boundary constant strain can grow to 7.5%. While the other tubing in such a strain burst, corrugated continue their work.

In many major cities and regions of USA operated many kilometers of water networks of the traditional slip-joint tubing, at which accidents occur largely because of depressurization of butt joints and fractures of the tubing. Strong welded joints – one of the advantages of high-pressure polyethylene tubing.

In addition, we note that during the two major earthquakes in Japan in 1995 and 2000 were not only damaged tubinglines from PEX tubing.
In Russia, large-diameter polyethylene tubing have been applied a few years ago. Initially they were mainly used in the construction of non-pressurized reservoirs. However, in recent years, large-diameter polyethylene tubing are increasingly and actively used in construction of high-pressure water mains.

tubing of large diameter and long use in their projects by Turkish company Firat. Among the most interesting projects planned by this company in the near future, it should be noted the project on construction of plumbing of fresh water with a diameter of 1600 mm. between the mainland Turkey and Cyprus. The uniqueness of this project is rather that the aqueduct would have to “hang” in the sea water, bending to a greater depth (this depth is chosen specifically to minimize the probability of collision with the pipeline floating).

http://www.pexuniverse.com/content/types-of-pex-tubing

Today the building is widely used PEX tubing. On the positive properties of PEX is its reduced flammability and increased chemical resistance compared to other polymers. It is also less sensitive to UV radiation.

Compared with polyethylene, PEX tubing have higher performance. PEX has the lowest coefficient of thermal linear expansion compared with other polymers are used: for comparison – 2 times smaller than that of polypropylene.

Among the general advantages of PEX tubing should be attributed durability and environmental friendliness.

PEX tubing are absolutely smooth, so a minimal resistance to fluid motion, not corrode and have a high plasticity.

Making a decision of what material to choose tubing for the construction of various engineering systems, especially when it comes to external networks, pay attention to the substantial difference in assembly technology systems. Thus, for polyethylene tubing should be expensive, energy-intensive and heavy welding equipment, work which requires highly skilled personnel (important human factor, which can not be avoided!), As well as certain working conditions. In the case of PEX tubing – installation requires a very simple lever hardware. Installation of PEX tubing takes much less time than the welding of polyethylene tubing.

The main areas of PEX tubing are a drain system and the external and internal drainage.

For PEX tubing is characterized by one common factor – an excellent price / quality ratio.

2. Tubes made of polyethylene. Durable. Stretch. A good insulator. Distinguish polyethylene of high and low density. High density polyethylene is stronger, but less elastic. Suitable for cold water. Ideal for installation of water gardening, because, due to its flexibility, tolerates freezing water without damage to the pipeline. Connection welding. In Europe, most used the PEX plumbing tubing from the so-called “cross-linked” polyethylene (PEX). Suitable for hot and cold water and heating. Connection disassembled fittings and crimping.

3. Pipes made of polyvinyl chloride (PVC). Of all the polymers more rigid. Resistant to ultraviolet rays, aggressive chemical compounds. Small proportion. Low flammability. The bad news – the presence of chlorine in the compound. Connected by gluing.

4. Pipes made of polypropylene. Depending on the label used for hot and cold water, heating and sanitation. Physico-chemical and thermal properties of polypropylenes are close to the sewn polyethylene, but unlike the latter is cheaper and easier to install. Connection welding.

Thus, for the American “average” consumer who wants to do self-assembly, and to focus on price / quality ratio, the most appropriate choice – a tube of polypropylene or polyvinyl chloride.

Unfortunately, PVC – a very common plastic. Find it everywhere you can. In the apartment he found most often in the form of linoleum (except for some expensive brands), vinyl, plastic window frames, plastic toys (from dolls to children’s dental rings). PVC also make different kinds of packages, including for food products: bottles, packets, etc.

Buy something from PVC, remember:

- To give flexibility to PVC it is often added to the so-called plasticizers – phthalates or phthalate esters, which hit the body can cause liver and kidney, reducing the protective properties of the body, infertility, cancer. PVC may also contain other harmful substances: cadmium, chromium, lead, formaldehyde.

- Particularly dangerous PVC combustion. It is known that the combustion of 1 kilogram of PVC produces up to 50 milligrams of dioxins. This is quite sufficient for the development of cancerous tumors in laboratory animals 50 000.

- There is no safe processing technologies PVC. It is virtually impossible to re-use and comes in the furnace in incineration plants (incinerator) or to landfill. Dioxins, tirelessly manufactured incinerators apply to hundreds or thousands of kilometers.

- Production of an PVC windows leads to the formation of about 20 grams of toxic waste. A renovation of the entire apartment with the use of materials made of PVC, entails the formation of 1 kg (!) Of toxic waste.

- In one year, factories producing PVC, emit several thousand tons of vinyl chloride, endangering the health of workers and residents of nearby settlements.

- The production of PVC is also used chlorine, so in its manufacture and disposal in the environment, a large amount of dioxins – highly toxic substances that cause cancer and undermine immunity.

How to identify products made of PVC?

In civilized countries of the goods from PVC usually put special markings – the number “3″, surrounded by arrows. Some manufacturers simply write PVC or Vinyl. In Russia, unfortunately, goods made of plastic little marked. However, PVC can be distinguished on several grounds:

* Bending packaging line bending appears white band;
* PVC bottles have a bluish or blue color;
* Another distinctive feature of packaging made of PVC – the seam on the bottom of the bottle with two symmetric rolls.

Avoid PVC!

Manufacturers of PVC asserting that without that plastic can not do, but it is clear that in most industries PVC can be replaced with wood, metal, glass, “chlorine free” plastic.

Many manufacturers have already replaced the linoleum PVC rubber and other materials. Do not forget also that the floor is always possible to cover the good old wooden parquet. Window frames made of PVC can easily be replaced by solid wood or aluminum. Pipes can be installed from polyethylene, steel, copper, carbon steel, earthenware. PVC cables, plugs, sockets, electrical sockets, as well as the range, recycle bin for paper, pens, etc. can be substituted analogues of polyethylene, ethylene-vinyl acetate, polyamide, silicone.

Toy PVC is also a much safer alternatives: first, toys, polypropylene and polyethylene, as well as fabric, wood, etc. Plastic bags can be replaced with reusable packaging, made from environmentally friendly materials: paper, glass, fabric. Instead of vinyl is better to buy paper, and bathroom and kitchen tiles to choose (or waterproof emulsion paint – this type of paint is enough eco-friendly).