All products are characterized by certain parameters. This also applies to water pipes. In addition, this type of product, such as profile pipes, also has its own differences, its own classification, its own specifications, that is, dimensions, cross-sectional area, withstand load, material of manufacture, and so on.
A profile pipe is any other type of pipe other than a standard round one. The big advantage of such varieties is that the cross-sectional area, having equal dimensions with round products, will be larger.
Such pipes have excellent technical characteristics, especially when it comes to their strength.
They are used in many areas of life: heavy and light industry, agricultural engineering, furniture production and many other industries.
The classification of these materials can be based on many characteristics, such as, for example, sizes, shapes, production methods, and so on. Let's look at this issue a little closer.
The following types are distinguished by form:
Note! All similar products made from steel various types. It must also be said that each type of steel also has its own GOST.
If we talk about the production method, the profile pipe will have two types:
Electric welding can have several types:
A small caveat should be made here too. We will talk about the types of steel that are used to make these products a little lower, but it’s worth understanding the difference between cold-rolled and hot-rolled products.
On initial stage produce sheets by hot rolling. The large original sheet is cut into smaller pieces or into strips. Cold-rolled steel is first processed, that is, the pickling process occurs first. Only after this the cold rolling process starts. For this reason, in the vast majority of cold-rolled steel, or rather a sheet of it, cannot be thicker than 4-5 mm. The area, like other parameters, can take on a wide variety of values, but the thickness has an upper limit. However, the surface of such steel products much better quality.
Such sheets have a constant thickness, no matter what their area. In addition, there is no scale on them. It must also be said that the technical characteristics are much higher, since before cold rolling all steel materials undergo a hardening procedure. Accordingly, the load on products made from such material may be higher.
If you have figured out hot and cold rolled products, now all that remains is to figure out what seamless products are and what electric welded products are.
The main ones include:
Today, the range offered by manufacturers is very wide. For example, let's look at products in accordance with GOSTs 30245-94, 8645-68, 8639-82, that is, electric-welded pipes with different cross-sectional shapes.
Assortment square products(this includes seamless and electric welded products):
Range of steel products (both thin-walled and thick-walled, GOST 30245-2003):
As you can see, there is plenty to choose from. And this is only part of the entire range of sizes, shapes and materials.
In this article we have mentioned many times the concept of thin-walled or thick-walled. The whole point is this: for different sizes, the same thickness can be either small or large. Hence the names.
Naturally, thick-walled products will cost more, since more material is spent on their production.
The wall thickness can range from 1 to 14 mm.
It must be said that depending on the type, the dimensions also change:
Most existing standard sizes are shown in the table below:
For materials with measured or multiple measured lengths, it is customary to add a margin of 5 mm. For this reason, the finished product at the exit may be 10 cm longer than expected.
GOST 30245-2003 regulates the basic requirements for the production of closed welded profiles for building structures. The range of steel square pipes includes the main sizes:
During the development of pipes, round profiles with longitudinal seams are used, which are crimped using rollers to produce a square or rectangular profile. The work is carried out on special mills. The basis is steel:
Burr removal from longitudinal seams is carried out with outside design, the following deviations are allowed:
Quality finished products is regulated by the main provisions of the assortment:
3.1 The main parameters of the profile section are shown in Fig. 1.
3.2 Other indicators (S section, axis and weight parameters for 1 m profile element) are determined by the corresponding indicators: for pipes with equilateral walls - table. 1; for products rectangular shape- table 2.
3.3 Permissible errors in material thickness correspond to maximum deviations initial blanks 125 cm wide with standard rolling accuracy “B” according to GOST 199-03. Deviations are allowed in bend areas.
3.4 The discrepancy between the height and width of products is calculated in %:
3. 5 Deviations of the radii of the outer circle are allowed:
3.6 Maximum size The tolerance to a 90° angle is ±1°30" (in the transverse part of the structure).
3.7 Length profile pipes 600 - 1200 cm, and at the customer’s request 400 - 1300 cm:
3.8 The maximum tolerances for the length of measured and multiple measured values are +6 cm.
3.9 Below are the conventional values of bent electric welded profile structures with vertical parameters = 18, horizontal section = 10, wall thickness = 0.5 cm. In this example, steel grade C245 is used according to GOST 277-72:
Table 1
Table
Nowadays, steel profile pipes have become widespread. supporting parts, make stop frames for public transport, railings, benches and much more. The most popular area of application for corrugated steel pipes is reflected in the construction industry when installing metal structures and constructing buildings.
A wide range of options for choosing the types of corrugated steel pipes makes it possible to produce a suitable design for the required tasks.
The steel pipe has a cross-section with 4 stiffeners. Despite the fact that such a product does not weigh much, it can withstand very heavy loads.
The use of profile steel pipes is varied in scope. Undoubtedly, the most basic area of use of profile pipe materials is construction. In modern building structures This type of pipe assortment is used everywhere.
Their use has the following advantages:
Let's consider the main technical characteristics of a profile steel pipe:
When describing steel corrugated pipes, it should be noted that their range is determined by GOST 8639-82. In this document, three main types of profile are distinguished:
The first two are seamless, and the third is produced from sheet material using welding technologies.
It should be noted that any characteristic of a pipe depends on a number of its other indicators. For these reasons, we can conclude that the presence of a table of the corresponding calculated GOST values makes it possible to easily find out how much high level quality from one manufacturer or another.
Table No. 1 of the weight of steel pipes.
| No. | Options. Profile square pipes | Length | Weight meter/linear. |
| 1 | 15x15x1.0 | 0, 478 | |
| 2 | 15x15x1.2 | 0,500 | |
| 3 | 15x15x1.5 | 0,600 | |
| 4 | 20x20x1.2 | 0,680 | |
| 5 | 20x20x1.5 | 0,840 | |
| 6 | 20x20x2 | 1,09 | |
| 7 | 25x25x1.2 | 0,870 | |
| 8 | 25x25x1.5 | 1,06 | |
| 9 | 25x25x2 | 1,38 | |
| 10 | 30x30x1.5 | 1,30 | |
| 11 | 30x30x1.5 | 1,60 | |
| 12 | 40x40x1.5 | 1,79 | |
| 13 | 40x40x2 | 2,30 | |
| 14 | 40x40x2.5 | 3,33 | |
| 15 | 40x40x3 | 4,20 | |
| 16 | 40x40x4 | 3,60 | |
| 17 | 50x50x2.5 | 3,65 | |
| 18 | 60x60x2 | 3,58 | |
| 19 | 80x80x3 | 12 m | 7,12 |
| 20 | 100x100x3 | 12 m | 9,01 |
The weight of the professional pipe will depend on its length and wall thickness. This point must be taken into account when choosing them.
Video:
the types and types of profile pipes and their technical characteristics are presented. Watching this video will help you decide on the choice of professional pipes specifically for your situation.
Weight must be taken into account when constructing massive metal structures; if this is your case, then use our tables.
Table No. 2 weights of steel profile pipes.
| No. | Options Profile rectangular | Length | Weight meter/linear. |
| 1 | 20x10x1.2 | 0, 500 | |
| 2 | 25x10x1.5 | 0,600 | |
| 3 | 28x25x1.2 | 0,930 | |
| 4 | 30x15x1.5 | 0,950 | |
| 5 | 40x20x1.5 | 1,30 | |
| 6 | 50x25x2 | 1,66 | |
| 7 | 60x30x2 | 2,64 | |
| 8 | 80x40x2 | 3,50 | |
| 9 | 100x50x3 | 12 m | 6,50 |
| 10 | 100x50x4 | 12 m | 8,69 |
| 11 | 120x60x3 | 12 m | 11,40 |
| 12 | 120x60x4 | 12 m | 10,55 |
| 13 | 140x60x2 | 12 m | 11,80 |
| 14 | 140x60x5 | 12 m | 14,58 |
| 15 | 150x100x5 | 12 m | 18,4 |
| 16 | 160x80x5 | 12 m | 17.69 |
| 17 | 160x120x5 | 12 m | 20,80 |
| 18 | 180x100x6 | 12 m | 24.69 |
| 19 | 200x120x5 | 12 m | 23.98 |
| 20 | 230x160x6 | 12 m | 46,11 |
In addition to these parameters, classification can be made by the following points:
The length parameters in this situation are determined by GOST 13663-86. This standard determines that steel pipes different shapes They are produced in standard measured lengths, their length ranges from 1 to 12 meters.
The cross-sectional area of corrugated pipes is determined by GOST 8642-68; accordingly, these products were divided into 36 different types sizes with a cross-sectional value within the range of 0.6 by 0.3 cm, and 0.9 by 3.2 cm.
By profile type they are divided into:
Video
Depending on the scope of application, these pipes are classified into:
Square steel profile pipe is widely used in construction field.
It is the square shape that is the main advantage in this situation. It provides high stability and speed of execution installation work.
These materials act as a reinforcing element during the construction of support structures and frames. They can be found not only in construction. They are no less often used in the mechanical engineering sector.
Square pipes are divided into the following types:
The range of such goods consists of products with a wall thickness of 0.1 to 1.4 cm, and a length of six to twelve meters. Craftsmen call this type of product a guarantee of compliance with the financial costs of construction and their minimization.
Profile rectangular pipe is a type of rectangular-shaped pipe rolling materials. It's kind of a subspecies square options. It is also a hollow metal profile with a variety of different sizes volume and wall thickness.
They are used when assembling structures and building elements that play a load-bearing role. They are used for furniture frames, scaffolding for construction, children's areas and much more.
The features of the shapes and the low weight of the products significantly reduce the mass of the main structure, but the resistance to the influence of high loads in this situation increases. They are often used as a protection channel for wiring a network of cables.
The main differences are determined by GOST 8645-78. According to these standards, there are the following rectangular pipes:
Depending on the type, the length of seamless or welded materials varies from 11.5 to 12.5 meters:
When working with such profile products, allowances of 0.5 cm are made for each part. The maximum indicator for exceeding the length level is generally 10 cm.
Electric-welded steel profile pipe is produced using different technological methods. The first of them is the formation of a profile from a flat workpiece. In this case, simple equipment is used, which is characterized by low energy costs. However, the resulting product has some disadvantages:
Change negative characteristics in in this case advanced technologies allow for uniform voltage distribution at the initial stage. In this case, a round blank with the required volume is formed.
Secondary processing in this case involves the formation of a section of the required dimensions and shape through the pressure of special rolls.
Galvanized profile pipe is a special type of rolled metal. The galvanized profile has increased anti-corrosion characteristics, which extends its service life.
Video
The advantageous difference of a galvanized product is:
Their areas are very different, but the main ones are:
At the moment, this type of rolled metal can be found in billboards, fences, and retail premises. And everywhere these steel pipes fully respond to everyone regulatory requirements.
The production of profile pipes is more complicated and more expensive than the production of round pipes.
Technological methods for producing professional pipes are:
The first method is noteworthy in that it makes it possible to preserve the strength characteristics of steel pipes one hundred percent. The fact is that its connections are seamless. The production sequence using this method is as follows:
Profiled pipes, which were manufactured using welding, are not very distinguishable from seamless analogues, but at the same time they lose up to 5 percent of strength. The release sequence in this case is as follows:
Video
The main advantage of a professional pipe is its low cost and high strength. Buying these steel products will not be difficult. Managers of any company will provide all the information about their cost and characteristics.
Steel profile pipes are successfully used in the construction of commercial premises, warehouses, sports facilities, residential and industrial buildings. These products are used as supports, columns, and various elements of various structures.
Their high strength makes them very popular for creating metal structures that are particularly complex. On construction market These products are deservedly very popular.
PostsThe scope of application of profile pipes is extremely diverse, so it is worth talking about their advantages and disadvantages in more detail. In this material we will talk about the range of profiled pipes, as well as what qualities of products you should pay attention to when purchasing them.
The very concept of “assortment” implies a wide variety of varieties and types of certain products, and in this context – profile pipes. As a rule, it helps to determine the availability of various types of products, classified according to a number of parameters, which are presented by manufacturers or at wholesale or retail points.
The full range of profile pipes includes all names of these products, manufactured in accordance with GOSTs, without exception, and also describes quality characteristics each category in all possible modifications.
In general, the classification of profile pipes can be carried out according to various indicators. One of the most significant characteristics is the profile shape.
There are the following types of products:
It is worth noting that the range of steel profile pipes is developed separately for each type of profile in full compliance with GOSTs.
In addition, the variety of profile pipes is also determined by such factors as:
By the size of the product range presented on the market by the manufacturer, one can judge its potential, capabilities and scale of production. And although expanding the list requires significant costs, it still indicates the stability of the enterprise.
Very wide application gained profile pipes in the process of assembling metal structures for various industrial facilities. Not only are they capable of replacing bars used for load-bearing structures, but they are also lightweight and inexpensive.
In addition, when choosing the type of pipes, it is worth considering the weight linear meter such products.
Most often, square rectangular pipes with the following parameters are in demand:
All pipes whose cross-sectional shape is not round are called profiled. The most common types are square rectangular steel pipes. The most common profile sizes are 25, 60, 100 mm and 40×80 mm, 50×50 mm and 40×100 mm.
It is worth noting that thanks to the variety of standard sizes of profiled pipes produced, it has become possible to construct more and more complex designs.
Among the main advantages of profile pipes are:
Due to the variety of sections and shapes of profile pipes, their scope of application is extremely wide.
In particular, the use of such products would be appropriate in the following cases:
Thus, it can be noted that pipes of various profiles, in particular square, rectangular and other types, are very common in the construction of facilities for various purposes. If you need to build lightweight partitions or structures that will not bear a large load, then profiled pipes with thin walls are perfect for these purposes.
Profile pipes actively used in construction, mechanical engineering, furniture production and other areas, presented at modern market in great variety. In order to streamline this diversity and classify these products according to certain criteria, such a concept as assortment was introduced.
The word “assortment” itself, if you turn to dictionaries, comes from the word “grade” and means a list of individual types of products that are presented on the market. In relation to profile pipes, the assortment means a set of types of these products produced by manufacturing enterprises or available at the supplier’s warehouse.
The range of pipes is presented in the form of a table or a simple list in which individual types of products are listed in accordance with their names in accordance with GOST 13663 86 (profile square, profile rectangular pipes, etc.). Such a table or list should contain all available types of pipes, for each of which all names are listed and characteristics are given.
The range of pipes belonging to the profile category differs great variety. They are classified according to various parameters, but the main one is profile cross section. So, pipes are distinguished:
The assortment is compiled separately for each type of pipe, which is regulated by the requirements of the relevant GOSTs.
The main parameters of the most common profile pipes - square and rectangular section
Metal pipes belonging to a particular type of profile can also differ in a number of parameters. The main parameters include:
The range of pipes presented by a particular manufacturer not only allows you to get acquainted with the range of its products, but also serves as an indicator of its level of development. Consumers of such products and organizations selling them prefer to establish relationships with manufacturing enterprises whose range of pipes includes a wide range of products.
The most clear information about the range of steel rectangular pipes is presented in the corresponding GOST, which is presented below.
To get acquainted with the assortment, it is worth viewing the data from the corresponding GOST, which is presented below.
Of the entire range of modern profile pipe products, the most common are products with square and rectangular cross-sections. Traditionally, they are made from metal, but now this material is increasingly being replaced by plastic.
The main area of application of profile pipes is the production of metal structures for various purposes, where these products successfully replace solid steel bars. The big advantages of pipes compared to such bars are their affordable cost and low weight.
When choosing profile pipes from the assortment for the manufacture of a metal structure, it is very important to correctly select their profile and cross-sectional dimensions. The main criterion that guides this choice is load bearing capacity pipes of both square and rectangular sections. It should also be taken into account that products with different cross-sectional sizes can differ significantly in weight.
According to the production method, as noted above, the assortment includes cold- and hot-deformed steel profile pipes. In accordance with the requirements of GOST 13663 86, this also includes products manufactured using electric welding. These pipes, like cold-formed pipes, can be coated with a layer of zinc, which prevents corrosion.
The cross-sectional dimensions of profile pipes most in demand in the construction market are:
The profile category includes all pipes whose cross-sectional shape differs from round. The most widespread of the entire assortment are products with square and rectangular profiles, the dimensions of which correspond to 25, 60, 100, 40x80, 40x100, 50x50 mm.
Steel profile pipes with dimensions exceeding 100 mm are used primarily as structural elements. Such products, which have four stiffening ribs, are distinguished by high strength characteristics and low specific weight.
Products with a 60 mm profile have excellent resistance to bending, which is why they are successfully used in construction and in the arrangement of various utilities.
Any profile pipes allow you not only to create complex steel structures, but also significantly save on the cost of expensive metal.
Among the advantages of profile pipes made of steel are the following.
Steel pipes having Various types profile, are actively used in many areas. Depending on the profile size, such products are used to solve the following problems.
