Repairing old and laying new water supply networks in residential premises begins with calculating the cost of the work. However, not only the price of pipes plays a decisive role. Equally important is the material from which they are made, the installation method and the ability to carry out work without the involvement of specialized specialists.
In the process of selecting water pipes for a residential premises, one should take into account possible future repairs or replacement of individual components in the event of emergency situations. Based on this, you need to focus on cost, quality and technical characteristics, which must meet all the necessary requirements.
Types of water pipes
Modern manufacturers of water fittings offer consumers two main types of water pipes:
- Non-metallic; Metallic.
Products of both types differ in technical characteristics, material, performance properties and chemical composition. Based on these signs, certain options for hot or cold water are selected.
Non-metallic pipes are made from the following materials:
- polypropylene; polyethylene; metal-plastic; PVC.
The following metals and alloys are used to produce the main types of metal pipes:
- steel;stainless steel;copper.
The main factor contributing to the widespread use of non-metallic water pipes is their durability and low cost. Scale and rust do not form on the inner walls of plastic products.
Their service life can exceed half a century, and installation and repair are much cheaper than metal analogues. Moreover, servicing or replacing a plastic water pipe does not require welding, which means any homeowner can do it if they have some experience and tools.
Criterias of choice
When choosing water pipes for your home, you need to consider:
Options for laying water pipes
Polypropylene
This type of product is characterized by increased strength and durability. Polypropylene pipes used for hot water supply will surely last 25 years or more, and for cold water supply - over 50. The material is very light, which has a positive effect on ease of installation and transportation.
An important positive property is the invariability of the characteristics of polypropylene, even with sharp temperature fluctuations and freezing of water.
When installing polypropylene water pipes, fittings are used at bending points. Due to the increased rigidity of the material, bending it in the usual way is unacceptable.
Recommendations for selection
When determining which plastic pipes are best for heating, follow the following recommendations:
- For the installation of an external heating pipeline, it is cheaper than others to use polypropylene. In addition to the low cost of the pipe itself, its connection does not require expensive transition fittings made of brass or plastic costing 200 - 400 rubles. The joining of PP pipe sections is carried out by soldering using cheap transition couplings made of a similar material.
- Considering the high temperature coefficient of linear expansion of all plastics, when laying pipelines in an open way on walls, it is rational to use expensive metal-plastic products with the least degree of change in linear dimensions. When placed under a screed or in walls, linear expansion does not play a special role - an increase in pipe dimensions is prevented by a hard and durable layer of plaster or cement-sand mortar.
- To join pipelines made of cross-linked, heat-resistant polyethylene or metal-plastic, fittings are used that are inserted inside the pipe - this reduces the flow area of the channel by 1.5 - 2 times, helping to increase the hydraulic resistance of the line and the deposition of metal salts on their surface. In this regard, cheap polypropylene PP pipes are a more acceptable material - soldering does not change the flow area of the channel.
- Solving the problem of which pipes are best for heating is not as important as the correct and high-quality installation of the system by qualified specialists. A properly selected and installed budget pipe can last its entire operational life, while the highest quality and most expensive products, when installed by low-skilled workers, can leak after some time.
- It is not recommended to place dismountable connections from used compression couplings under non-separable building materials - over time they weaken and leak. This condition means that when supplying coolant to radiators or laying heated floors made of cross-linked or heat-resistant polyethylene, compression couplings should not be placed under the screed or in the walls.
Rice. 15 Installation of fittings by pressing into PEX or PE-RT
When deciding which pipes are suitable for heating a private country house, they consider various options made of metals and polymer materials, differing in their characteristics and affordability. When choosing, the complexity of installing the main line is also taken into account, which has an important impact on the total cost of the work; in most cases, the use of special tools and the appropriate skills of the installer are required.
Polyethylene
Water pipes made from this material are highly reliable due to their ability to withstand pressure up to 16 atmospheres. Despite many positive aspects, polyethylene products are not widely used.
The temperature range in which they can be operated is from -40 C to +40 C. Given the low heat resistance, coupled with a fairly large linear expansion rate, such a water supply may not always be a suitable option for the home.
However, cross-linked polyethylene, which appeared on the market not so long ago, turned out to be more in demand. Installation of a water supply system made of such material is as simple and convenient as possible. At the joints, fittings without rubber seals are used, and a special fitting is installed on top of them.
The undeniable advantages of a polyethylene plumbing unit include:
- increased strength; resistance to low temperatures; inertness to many chemicals present in water; fittings used for installation do not interfere with permeability.
The product has a multilayer design, in which the outer and inner layers are made of plastic, and the middle is made of metal. This results in increased strength with low weight.
The elasticity inherent in metal-plastic pipes allows them to be given various shapes. Positive properties include excellent thermal conductivity of the product, easy and convenient installation.
Vulnerable places in a metal-plastic water supply are connections. When carrying out work, you need to pay increased attention to the quality of installation of fittings. The fact is that with sudden temperature changes, aluminum contracts faster than plastic and high pressure in the system can lead to an emergency.
Types of pipes by material: copper. Purpose and characteristics
When considering the types of pipes, you should pay attention to copper products, which today have the title of elite. A water pipeline made from this material will be ready to serve for 70 years or more, while the walls of the communication will not age, will not change their working qualities and will not deteriorate
Copper has bactericidal properties, which means that clean water will flow in such a pipeline. Such products are not exposed to sunlight, are not afraid of precipitation, changes in atmospheric pressure and can operate in the following temperature range: - 200...+ 500 °C.
The material does not corrode and is suitable for heating systems, as well as hot and cold water supply. Installing this type of pipe is very simple, as it is lightweight, easy to cut and solder.
PVC
Pipes made of polyvinyl chloride are in many ways superior to their plastic counterparts in strength and resistance to aggressive chemicals, and the permissible pressure in such a water supply can reach 46 atmospheres.
Resistance to high temperatures allows the use of polyvinyl chloride water supply for hot water supply. It confidently withstands temperatures up to 90 degrees Celsius.
Installation does not cause any particular difficulties and you can do all the work with PVC water supply yourself without welding. The process requires only couplings and angles, which makes installation cheaper compared to analogues for which it is necessary to purchase fittings.
Metal pipes have been used for decades. Despite the emergence of new materials, they still have not lost their relevance. Metal, like plastic, has its pros and cons.
The biggest advantage of metal water pipes is mechanical strength. However, its service life is only a few years. In addition, complex installation and welding work increases installation and maintenance costs.
During operation, growths form on the walls of a metal water pipeline, which lead to a drop in pressure and throughput.
Bottom line
When installing a plumbing system, you need to carefully weigh all the pros and cons of the materials, compare everything and make the right choice. An important aspect of the choice is the price of the water pipe; this point is especially important if your water supply line is more than one hundred meters long.
When buying any pipe for your water supply, a person often needs to find the optimal balance in terms of availability and reliability. Very often the choice shifts in this ratio towards saving money.
But even the cheapest offers require detailed study in terms of the properties of the product.
If you have any doubts, seek help from a consultant at a hardware store. His qualifications in this area allow him to give the right advice. A consultant will help you avoid common mistakes when installing a line. Date: September 25, 2022
Which pipes to choose for water supply (video)
The disadvantages of such water pipes include heavy weight, complex installation and corrosion. However, modern manufacturers have learned to coat the inner surface with a non-metallic layer, which increases the service life of the product and avoids corrosion.
Stainless steel products are superior to conventional ones in all main characteristics, but their cost differs significantly, which leads to a significant increase in the cost of the entire water supply system.
Even more information about the types of pipes for water supply and sewerage
You can get more information about the types of pipes for water supply and sewerage from an expert.
Our specialists are familiar with all accepted classifications of pipelines and are ready to recommend suitable products for laying communications. There are pipes and connections for water supply, heating and other utility networks to choose from. You can also order installation of water supply and sewerage systems from polypropylene pipes and HDPE products from us. Order a consultation
Copper
The throughput of copper water supply is higher than that of others. This is achieved due to a smoother internal surface, so smaller diameter pipes can be used. Copper has disinfectant properties, due to which copper pipes are widely used for drinking water supply systems.
The undoubted advantages of copper products include their presentable appearance, resistance to corrosion and long service life, which can reach 70-100 years.
However, the high cost of copper pipes and installation work is not affordable for everyone. Such water pipes are usually found in luxury homes, where luxury is considered one of the important indicators.
In order to competently design and arrange a water supply system, it is necessary to carefully examine various types of water pipes, comparing their technical, operational and aesthetic characteristics. In this case, the choice of pipe type will depend on its purpose: either an internal water supply and drainage system (sewerage) is planned, or installation of external communications is required.
There are quite a lot of options, so it is worth considering this issue in detail to avoid unnecessary mistakes and extra costs. Pipes for water supply. Main characteristics of water pipes First of all, you should take into account the types of water supply and sewerage networks (sewage systems). They are divided into: external networks, internal networks. In both options, pressure pipes are used, designed to supply hot and cold water under the appropriate pressure. The pipes are connected using a special soldering machine. The main operational characteristics of water pipes include the following parameters: corrosion resistance; chemical resistance; service life; resistance to different temperature operating conditions; throughput. Classification of water pipes by material All pipes for supplying and discharging water are divided into three main classes: Metal pipes (cast iron, steel, copper). Polymer pipes (plastic). Metal-plastic pipes (polymer materials are combined with metal). Each type has its own advantages and disadvantages due to the physical properties of the material. Metal pipes Types of plastic water pipes have a long service life. Cast iron water supply. Due to the fragility of this material, communications made of cast iron require special care during installation and transportation.
Connection and sizing pose a major challenge for installers. Although, in comparison with water pipes made of steel, cast iron pipes last longer (according to some estimates, up to 80 years) and do not “overgrow” so much from the inside, the use of cast iron in the construction of water pressure systems is gradually being reduced. Steel water pipes. The disadvantage of this type of pipe is its short service life - approximately 20 years.
Low corrosion resistance over time leads to the formation of rust inside the pipe, which significantly deteriorates the quality of drinking water supplied to the system. Reduced communications flow negatively affects the costs of supplying water to the consumer. Compared to Europe, the cost of water supply in our country is 1.5 times higher.
Metal corrosion leads to accidents and breakdowns during the use of steel systems. It is also worth noting the high labor intensity when installing and replacing sections of steel water supply. The method of connecting such pipes is either threaded adapters or welding joints.
All this increases the time and cost of installation and maintenance of such systems, however, one should pay tribute to the high strength and relatively low cost (compared to copper) of this type of pipe. Copper pipes. As a rule, they are used only indoors due to the high cost and specific connections. This type of pipe is not compatible with galvanized steel products, which makes them difficult to replace or repair (professional help is required).
Nevertheless, the durability of copper water pipes exceeds all other metal systems (operation without leaks is possible for a whole century). This material has an unusually smooth internal surface and, as a result, there is no corrosion “overgrowth” and a decrease in throughput. The absence of corrosion keeps drinking water clean and makes this type of pipe very popular when installing both hot and cold water supply systems and heating systems. Such pipes are today most often used in water supply systems around the world.
What is the reason for such popularity? Let's consider the main advantages of these types of pipes: the service life is very long (plastic does not deteriorate for centuries); the smooth inner surface does not contribute to “overgrowth”; the low sound conductivity of plastic reduces the noise characteristic of water pipes; the quality of water does not deteriorate because there is no corrosion; the material is lightweight, therefore transportation and installation work have a low cost (assembly is carried out by simple cutting and subsequent connection using soldering or fittings); high strength; low cost of the pipes themselves; these advantages encourage specialists to willingly design networks with polymer types of pipes; in fairness, it is worth noting some disadvantages, which types of polymer materials have: with increasing temperature, an increased coefficient of change in the dimensions of the product is observed; diffusion (penetration) of oxygen through the walls of pipes, affecting the quality of operation. Types of polymer pipes The connection of pipes must be as tight as possible. Polyvinyl chloride (PVC) pipe - used for both internal communications and external ones. An economical option due to the low cost of products. Polypropylene pipes are widely used not only for plumbing systems, but also for sewerage, heating, and irrigation. Polyethylene pipes are used in seismically active areas (for example, in Japan), because polyethylene is very elastic and can stretch up to 7% of its volume without collapsing.
The same property makes polyethylene systems indispensable in conditions of low temperatures and during water hammer. Pipes made of cross-linked polyethylene (PEX) - polyethylene produced under high pressure is used. The material has improved characteristics of resistance to high temperatures and loads. Used in hot water supply and heating (including for “warm” floors). Metal-plastic pipes (PEX-AL-PEX) This type of pipe is increasingly being used, since, thanks to the reinforcement of a conventional polyethylene pipe with aluminum, its protection from diffusion, resistance to high pressure (10 bar), high temperature (up to 95°) and deformation. Although this type has a slightly higher cost than conventional plastic pipes, its quality characteristics make these products indispensable when constructing open systems. Share a useful article :Similar articles:
Today, the choice of pipes for installing a water supply system in an apartment or private house is so large that it is very difficult for an ordinary buyer to make a choice. In order to choose the right option, you need to take into account: the temperature and pressure of the liquid, the diameter of the pipes, the cost of the elements and the required service life of the system, the ease of its installation. Let's consider the main types of pipes for the water supply system in the house.
Metal-polymer
*
Metal-plastic pipes are produced by extrusion, applying a melt of polymers to a frame made of mesh, wire or foil.
Metal-plastic materials combine the advantages of metal and polymer types of pipes for heating or plumbing:
- resistance to corrosion, chemical attack;
- low thermal expansion;
- wear resistance;
- simple installation using detachable, crimp or press fittings;
- operating temperature range up to 95°-110° and pressure up to 10 bar, withstands repeated freezing;
- service life up to 30 years.
Metal-plastic retains its shape when bent and does not release harmful compounds into the water.
Pipe made of metal-plastic
Disadvantages of water pipes made of metal-polymers:
- lower mechanical strength than steel pipes;
- not used at pressures exceeding 10 bar and temperatures above 110°;
- some types are susceptible to fatigue failure.
The combination of positive qualities makes this material promising for wide use in various fields of construction.
Metal pipelines
Nowadays, metal pipes are practically not used for laying water pipes inside buildings.
More recently, various types of metal water pipes have been used everywhere.
Now they are practically not used for laying water pipes inside buildings. And they are used primarily where high mechanical strength of the system and a large diameter of pipelines are required: on city streets, under highway overpasses, etc., as well as for laying high-pressure networks (for example, at pumping stations).
For your information. Metal-plastic pipes are fire-resistant, so they are also used for laying fire water pipes.
The advantages of this type of pipes include:
- high strength; low coefficient of linear expansion when heated; relative ease of installation - the connection is made using couplings and adapters with sealing of threaded connections with flax or fume tape; welding is rarely used.
Flaws:
- Possible corrosion of some types of metal pipes. The appearance of rust is promoted by condensation accumulating on them. Therefore, insulation of pipelines is often required; The roughness of the inner surface leads to the deposition of slag there, the so-called “narrowing of the lumen” of metal pipes occurs; Due to the large weight, such pipelines require reinforced fastening; Difficulty in bending.
Additional insulation
If we are talking about the street part of the water supply system, then it requires additional insulation. A plastic water pipe or some other pipe requires insulation in winter. This is done in two main ways.
The first method is to heat water pipes using special nozzles that are made of heat-insulating materials. Such heat-insulating pipes come in different diameters and different thicknesses, it all depends on the purpose. It is better to take it with a reserve, because a plastic water pipe in the cold with insufficient insulation can burst. Although this does not only apply to plastic, it is more susceptible to cracking.
The second method is more modern and effective. For heating, a special cable for the water pipe is used. This could simply be a cable that you wind onto a pipe, and then wrap foil and some kind of thermal insulation material on top.
There are special cables that are installed directly into the pipe through a special coupling. This is the best option, although the most expensive.
Steel pipes
Black steel pipes are intended for hot water supply
Black steel pipes are intended for hot water supply, galvanized types of pipes are intended for cold and drinking water, but not vice versa.
They are durable and low cost. They rust over time, so they will have to be replaced after a maximum of 25 years. They are afraid of low temperatures.
Classification of steel pipes according to the method of their manufacture;
Cast.
Smelted in the pipe foundry shop of metallurgical plants; Seamless. The blanks are made by forging; welded. They are formed by bending a steel sheet and welding with a longitudinal or spiral seam.
They differ from each other in strength and cost. Outer diameter: from 10 to 165 mm.
Classification of pipes by wall thickness:
- light; ordinary; with a reinforced wall; ordinary.
Technical characteristics in accordance with GOST
The quality characteristics of steel pipes are always determined by the approved GOST. Special standards that require compliance are developed for ordinary and galvanized products that are used in the installation of water supply systems, heating systems, gas pipelines, etc. The state quality standard also determines the technological process in accordance with which production should be carried out.
When manufacturing their products, manufacturers often indicate dimensions in inches or millimeters. Galvanized pipes weigh approximately 3% more than conventional steel products. This feature must be taken into account in the design process of pipe structures. The zinc layer has its impact on installation and operating requirements. The layer applied to the surface must exceed 30 microns.
Labeling requires attention when choosing a product. On the pipe, the manufacturer indicates the material from which it is made, the weight, diameter of the product, as well as the thickness of the metal layer, the manufacturing plant, the batch number, and the date of actual production. All information provided must comply with current state standards.
Copper
They are beautiful, durable, and are not afraid of temperature changes or rust. They are light, plastic, flexible, have a long service life, and are not afraid of a single freeze. Used for drinking water and heating systems.
Important! Copper pipes are not used for acidic liquids, for water with solid impurities, or at high fluid flow rates. They are not recommended to be connected to aluminum radiators.
Mounted using threaded connections or special welding.
Stainless
*
Pipes made of alloyed corrosion-resistant steel are durable and not subject to the destructive effects of water. They can last up to 400 years. Oxidation products do not accumulate on the wall and do not enter the household water supply. Increasingly, stainless steel products are replacing conventional carbon steel, despite the higher price of the material and the complexity of installation.
Their stainless steel profiles
Stainless steel structures comply with sanitary and hygienic standards, withstand water shocks well, and are resistant to critical temperatures. Water with excess chlorine can damage stainless steel, so after disinfection it is recommended to thoroughly rinse the system.
Stainless steel pipes are used in various fields:
- water, heat and gas supply;
- fire fighting;
- installation of ducts for air conditioning;
- laying “warm floor”;
- for protecting power electrical cables.
The water supply is assembled using press fittings, also made of stainless steel, by welding with a tungsten electrode in an inert environment. In industrial conditions, laser welding is used.
Water supply systems made from flexible corrugated pipes are becoming increasingly common. Their advantages are the possibility of laying in hard-to-reach places, installing long-distance lines, and resistance to dynamic or vibration loads.
Plastic pipes
This type of pipes is not afraid of corrosion, they do not need to be painted, they have a beautiful appearance
This type of pipes:
- not afraid of corrosion; no need to paint, they have a beautiful appearance; durable; does not lose lumen; has a long service life; economical, has a low cost; does not deteriorate the quality of water; easy to install; has low thermal conductivity, does not take away heat from the water, therefore often used for heating systems; does not resonate, therefore suppresses the noise of water flow.
Flaws:
- Not used for acidic liquids; Lose their strength under high loads; Not used in fire-fighting pipelines; Need protection from rodents. Not all types of pipes are suitable for hot water supply.
Nuances of choice
For internal cold water supply, you can take any of the above options. For hot water supply, metal-plastic or steel is more suitable. Copper is also good in both cases, but is expensive. For external water supply pipelines, you should choose only steel or polyethylene products. They are not afraid of low temperatures in winter, and if the water in these pipes freezes, they will definitely not burst.
When choosing pipes for water supply, you must also take into account the expansion coefficient of the material at high temperatures.
Pipelines made of polyvinyl chloride (PVC, PVC, CPVC, CPVC)
Used for cold water supply systems, because...
at temperatures above 60°C they lose their shape. For hot water and heating systems, chlorinated polyvinyl chloride (CPVC) is used (allowable water temperature up to +82°C). Due to their toxicity and flammability, they are prohibited for use in European countries.
They are connected either cold (with plumbing glue) or by welding (using cuffs). They are lightweight, chemically resistant, and mechanically strong. Their weak point is the joints.
Polypropylene (PP, PN?)
Polypropylene pipes are used for both cold and hot water supply
The following types of polypropylene water pipes are available for sale:
- PN10– for cold water supply, their wall thickness is 1.9-10 mm, water temperature up to +20°, maximum pressure 10 atmospheres; PN20– for hot water, water temperature +80°C, maximum pressure 20 atmospheres; PN16, PN25– used in heating systems.
Outer diameter: from 20 to 32 mm. They are light, strong, durable, non-conductive, and have a high degree of noise reduction.
The method of connecting pipes by heat welding deserves special attention.
The process takes place at a temperature of +260°C, which ensures the strength of the joint. There is a large selection of different fittings, adapters, etc. on sale.
Hydraulic calculation
To determine the most economical sections of the water supply system, a hydraulic calculation is carried out. The condition must be met to ensure the required water flow, maintain pressure and minimize pressure losses. Taken into account:
- calculated direction of water movement;
- consumption according to water consumption standards;
- characteristics of water fittings and number of points;
- housing overcrowding ratio;
- pressure loss due to friction along the entire length of the pipe.
Based on the calculation results, the diameter of the water pipes is selected based on the table of sizes and product range.
To determine pressure losses, use Shevelev tables or online programs.
The tables for hydraulic calculations of steel, cast iron, asbestos-cement, plastic and glass water pipes contain ready-made indicators depending on the diameter, material, line length, and network pressure. Losses are determined at each site and summed up. Based on the value found, the required flow rate and pump power are determined.
Example of hydraulic calculation using Shevelev tables
The water supply system is a complex engineering communication. It is important to select pipes taking into account their technical characteristics and perform installation correctly.
Polyethylene (PE)
They are distinguished by their elasticity, which allows them to be used in seismically hazardous areas.
There are three types of polyethylene pipes:
- HDPE – for use in high pressure systems; PSD – for medium pressure systems; HDPE – for low pressure. They are black in color, used for supplying drinking water, like well casing pipes, but are practically not used in everyday life due to their low density.
They are not suitable for hot water supply, as at elevated temperatures they become viscous and soften.
In addition, they are afraid of direct sunlight and age quickly. Not used at air temperatures below -20°C (except for some types stabilized with carbon black). Outer diameter: from 20 to 160 mm.
Standards and sizes of steel pipes
There are special standards and GOSTs for rolled steel pipes. These parameters describe the method of manufacturing the product, its basic dimensions, cross-section and wall thickness. Based on this information, the area of use of a particular part is determined.
Parameters for straight seam weldments
The production of electric-welded pipes with a straight seam is regulated by GOST 10704-91. According to his information, the outer diameter of the product is 10-1420 millimeters, and the wall thickness varies from 1 to 32 millimeters.
Reinforcement, not exceeding 426 millimeters in diameter, has measured and unmeasured lengths. In special cases, pipes with a stronger, reinforced seam are made, but for them there is a separate special standard - GOST 10706.
Electric-welded steel pipes with a straight seam are a universal material with a wide range of applications. Decent quality and low price make their use relevant both at large-scale facilities and in everyday life
Pipes of this type are most often used for laying technological communication systems with moderate pressure and creating practical, convenient and lightweight metal structures for various purposes.
Regulations for electric welded spiral welded pipes
The production of electric-welded pipes with a spiral seam is carried out in accordance with GOST 8696-74. The outer diameter of such products is 159-2520 millimeters, the wall thickness ranges from 3.5 to 25 millimeters, and the length is 10-12 meters.
Electric-welded pipes with a spiral seam are more expensive than their straight-seam counterparts. However, the costs are well justified, especially if the system requires a perfectly precise, perfect connection
Pipes made in this way are more durable and can withstand high pressure. The standard allows them to be used both for domestic and industrial purposes, to create reliable, sealed and operationally stable communication systems.
Requirements for seamless hot-formed products
Standards for seamless hot-deformed pipes are described in GOST 8732-78. The thickness of their walls is 2.5-75 millimeters, and the diameter varies from 20 to 550 millimeters. In length, both measured and unmeasured, the size ranges from 4 to 12.5 meters.
Seamless pipes made by hot deformation are practically not used in everyday life. Most often they are used for industrial systems with increased requirements for reliability and tightness.
Pipes of this type are used to transport highly toxic substances for chemical production. The absence of a seam ensures that there is no leakage and no harmful substances can enter the ground or atmosphere.
The ability to easily withstand constant high pressure makes seamless pipes relevant for the oil refining and gas industries.
Standards for Cold-Worked Seamless Pipe
Cold-rolled steel pipes are manufactured according to GOST 8734-75. The outer diameter of the reinforcement varies from 5 to 250 millimeters, and the wall thickness is 0.3-24 millimeters. Products are produced in unmeasured lengths from 1.5 to 11.5 meters and in measured lengths from 4.5 to 9 meters.
Thick-walled seamless cold-rolled steel pipes are used in the same way as hot-formed ones. And thin-walled ones are most often used where a combination of impeccable strength and low weight is necessary (aircraft industry, shipbuilding, etc.)
Seamless steel pipes created by cold deformation demonstrate high strength, operational stability and reliability throughout the entire period of use.
Features and characteristics of water and gas products
Gas and water pipes are produced according to GOST 3262-75 regulations. This type of rolled metal is included in a separate standard only because of its narrower scope of application.
The outer diameter of the product is 10.2-165 millimeters, and the wall thickness ranges from 1.8-5.5 millimeters. The range of sizes for unmeasured and measured lengths is the same - from 4 to 12 meters.
Water and gas pipes are mainly used for their intended purpose: for organizing water and gas communication systems. Sometimes they are used to create lightweight structures or are used in the furniture industry to make stylish interior decor items.
The standard provides for the production of not only conventional, but also galvanized water and gas pipes.
