Profile pipes: the size, the conditions of production and cost

In our country, produced profiled tube for decades: the size (standard or specified by the customer) in a wide range. The manufacturing process of square section products difficult manufacturing techniques round tubes. Their cost justify the extra effort. The use of special equipment and painstaking work, involving the use of the latest technology - a guarantee of quality shaped articles.

Features hot and cold-pipe rolling

Called hollow tubes, thin-walled and thick-walled metal rods of different formats. Judging by the volume of production and purchases, the most popular are round and square seamless products. Their consumption increases with the growth of the economy and the population's needs. Expanding product line, there are different sizes of square shaped tube.

Profiled tube - a closed profile product manufactured from rolled steel. Domestic and foreign companies, improving the release of technology, offering competitive goods. Basic dimensions of profile pipes of rectangular section (as well as square and oval) prescribed in the tables on the official websites of manufacturers. Deviations are discussed by managers with a specific buyer.

Useful advice!Product dimensions, weight and length, set in the specifications, must be checked before purchasing party for compliance with EU standards specified in the table.

Profiled sheet metal tubes tested molding the specified parameters. The process consists of several steps is completed by treatment of products on sizing mill and seam welding. The maximum dimensions of the rectangular tube is initially set, the standard - 12 m, short cut profile value from 1 to 9 m. Enterprises produce products from available raw materials using special equipment, their assortment is limited to the technical specifications (TU). Profile made from carbon grades alloyed and high-alloy (content of chromium, molybdenum, nickel, manganese) steel resistant to corrosion and high temperatures. Mark must comply with the standards:

• Hot electrowelded profile - 10ps, St4sp, St4ps, St4kp, St2sp, St2ps, St2kp, 10 and 20;
• hot- and cold-profile - 10ps, 08kp, 10, 20, 35 and 45.

The profile is produced by rolling specify parameters including wall thickness, in accordance with GOST 1050-88 and 380-94. Their production is mainly steel grades St2, St3, St10, St20.

Specifics of the profile of the metal pipe rolling

According to a method of manufacturing shaped tubes are of hot-rolled and cold-deformed.
Due to the plasticity of metals profiling any steel blanks is available when exposed to high temperatures. When cut (in section) of the pipe are in the form:

• square;
• rectangle;
• oval.

Flat oval arched profile (or oval pipes) is not less than claimed, and its production increases. The technology of molding does not differ from the standard rolling proftrub. This is an intermediate option between the round and rectangular designs, and they are much higher quality performance and endurance than these products. standard size tubes release technology includes:

• method of cold-forming press of rounded articles;
• welding steel rectangular sheets.

Important!The cost of rental of the weld is lower than the price of one-piece pipes. There is no need to doubt their quality: joint before the reception of the certificate and the certificate is checked acceptance flaw.

In accordance with the GOST, any pipe size (in inches and mm) are formed by two technologies, significantly different from each other:

1. By welding of the sheet or ribbon profile (seam can reduce product quality only when substantial loads, the product has a lower price).
2. Round rods are compact billet of the same shape on the rolling mill (the technology is more costly, seamless products endure the maximum load in vertical frames).

The versatility and the main parameters of pipes with stiffening ribs

When the formation process steel pipe dimensions correspond to a predetermined length, the shape of the rolling attached rectangular (square), with 4 ribs. The output is a tubular profile. Configuration it stands out among the usual round tubes. Products made of cold-rolled at a cost not differ significantly from other varieties. By applying the technology of producing cold aluminum or galvanized profile, it additionally impart anticorrosion properties.

Useful advice!It is recommended to purchase in the price view prices for finished products, given the obvious cost savings and the cost of delivery in your region.

Increased demand for aluminum profile justified technical parameters:

• resistance to physical impact;
• low weight with significant amounts of metal pipes;
• increased strength at a sufficient ductility metal;
• minor deviations at deformations;
• wide range of applications;
• affordable prices on all aluminum and galvanized gauge considering pipe sizes.

On the territory of the Russian Federation more than 400 companies specializing in the production of shaped and round steel tubes. They differ in the cross section and wall thickness range, their use is almost limitless.

Profile pipes: the size according to GOST, cross-sectional shape

All metal assembly and installation of the components used in any area must comply with the standards:

• GOST 8639-82 - profile square section;
• GOST 8645-68 - profile of rectangular cross-section;
• GOST 8642-68 - arched or oval profile.

Sizes steel pipes GOST:

Types of pipe length	Length m	kind of pipe rolling
measured length	4,5-11,0	B / w cold-deformed
4,0-12,5	B / w Hot
5,0-9,0	Electro products
Random length	1,5-9,0	B / w or cold-electric
4,0-12,5	B / w Hot
Multiple length with an allowance of 5 mm slice	1,5-11,0	B / w cold-deformed
4,0-12,5	B / w Hot

According to state standards, as well as in accordance with the tables of shaped pipes sized enterprises offer the following products:

• steel tubular profile of rectangular cross section dimensions of 15x10 mm and to a thickness 180h150 metal wall 1-12 mm (Special sizes - products from 28h25 to 230h170 mm with a wall thickness of 1.5 to 20 mm);
• profile of square cross-section with a rib 10 to 180 mm, wall thickness - from 1 to 14 mm (Special sizes - the workpiece 32 to 65 mm thickness from 4 to 6 mm);
• krugloovalny steel profile having a size of 6x3 to 90h50 mm and a wall thickness of 0.5 to 2.5 mm (Special sizes - the workpiece from 72h22 to 17h6,6 mm, wall thickness - from 1 to 1.7 mm).

The development of industry and agriculture, oil and construction spheres leads to expansion of assortment of the profile. Arranged production of tubes having the polyhedron cross section of curved and thick rolling bearings with an outer diameter of up to 2520 mm (wall to 75 mm).

Attention!Companies expanding production of new forms of pipes, channels, beams and angular profile. Before buying it is important to clarify the assortment is also possible individual order.

Used in the construction of the profiled tube: size table

Each type of pipes, beams and profiles designed for specific purposes. For the construction of suitable products with an average wall thickness of 8 to 12 mm. When making use of this metal of the workpiece made of steel grade St3sp / PS5, issued in accordance with GOST 14637-89. Also suitable high strength metal 09G2S mark (this profile according to GOST 19281-89).

The most popular are considered proftruby - a versatile metal with stiffeners. They are used for construction:

• sports and children's playgrounds;
• sports centers and swimming pools;
• fences;
• Frame type;
• sheds all kinds of purposes;
• billboards and billboards;
• flag poles and towers;
• stops of public transport, and so on.

For each object takes a certain profile. According to the standardization of products form section classified as "rectangle", "square", "oval" and "polygon".

Standard pipe sizes in inches and millimeters, the table

Products of rectangular section are consistent with such parameters:

• specifications - GOST 13663-86;
• weight 1 running. m - from 0.348 to 55.71 kg;
• section - up from 180h150 15x10 mm;
• pipe wall thickness - of 0.8 to 12.0 mm.

Profile square section:

• specifications - GOST 8639-82;
• weight 1 running. m - from 0.22 to 70.33 kg;
• section - from 10x10 to 180x180 mm;
• the wall thickness of steel pipe - from 0.8 to 14 mm.

The arched profile (pipes of oval cross section):

• TekhStandart - GOST 8642-68;
• weight 1 running. m - from 0.513 to 38.7 kg;
• section - from 6x3 mm to 72h22;
• wall thickness - of 0.5 to 2.5 mm.

The following table introduces the standard size and weight of the steel pipes:

Form cut	The cross section, mm	Wall, mm	Weight, kg
Rectangle	from 10x15 to 1502h180	0.8 to 12.0	from 0.348 to 55.71
Square	from 10x10 to 180x180	0.8 to 14.0	from 0.22 to 70.33
The ellipse (oval)	from 6x3 up to 72h22	0.5 to 2.5	from 0.0513 to 3.87

The technical documentation may encounter the following symbols:

• GOST - State Standard for pipes used in the gas, oil and heat piping;
• DIN / EN - evrosortament steel pipes according to DIN 2448 and DIN 2458;
• ISO - standard diameters and plumbing engineering systems;
• SMS - Swedish standard diameters of pipes and valves;
• Control (Dy) - nominal diameter.

If required product size, represented in millimeters translated into inches, the size is rounded with a large value. The 1 inch (inch) contained 25.4 mm, yielding an error in the rounding, taken into account for the purchase.

Table pipe diameter in inches and millimeters:

Pipe diameter, inches	Pipe diameter mm
1/2	15
3/4	20
1	25
1+1/4	32
1+1/2	40
2	50
2+1/2	70
3	80
4	100

What are the dimensions of shaped tube, types of rolled products processing

The most popular are the following dimensions (measured length of 12 m and intervals of a multiple format):

• square pipes - cross section of 15x15 to 60x60 mm;
• rectangular profile - the cross section of 15x20 mm to 44h80.

Steel pipe profile (GOST dimensions regulated) by the processing method advantageously divided into following types:

• seamless cold (cold-drawn and cold-rolled);
• Hot-rolled seamless steel tubes (hot-rolled, hot-pressed and goryachekovanye);
• Hot-welded (welded, spirally);
• seamless (centrifugally, and teplokatanye teplotyanutye) products;

Related article:

The diameters of steel pipes: how to plan communications

What you need to know the diameter of the pipe? Variations of these parameters. Units: inches and millimeters. Tables diameter steel pipes.

• welded (electrowelded and welded);
• collapsible, and furnace brazed pipe welding;
• cold-deformed (drawn and rolled);
• steel pipes surfaced;
• treated (ground and polished) products with metallic and non-metallic coating;
• nickel and corrosion resistant coating.

Useful advice!It is recommended to specify the length of the product (including the profile tube), the size and weight in the tables.

Known basic parameters such shaped tube:

• profile view (geometric form on the cut);
• grade steel or other metal;
• tube length;
• sectional diameter (pipe dimensions in inches and in millimeters);
• wall thickness;
• the presence of a seam;
• presence of additional processing: zinc plating, grinding, polishing and so forth.

Issued pipe with treated slices, threaded at one or both ends and finishing ends of another type:

• narrowed and expanded metal rods;
• bearing steel tubes;
• Products with upset ends and other treatments.

In addition to square and rectangular structures, respectively STATE, pipe sizes and their shape may vary within:

• guttate and polygonal plates;
• Oval and flat oval steel profile.

Important!In difficult conditions (high temperature) profile of the high pressure applied to the same hardened.

Construction needs: the profile tube wall dimensions

Currently, the most popular are the furniture and building profiles. Tube of rectangular and square cross-section produced in accordance with GOST 30245-2003. Without them difficult to provide industrial, military and civil construction. These products are used for the manufacture of such structures:

• buildings frame type;
• ladders and steps;
• ceilings;
• sheds and farms;
• struts or supports;
• bridge columns;
• railroad crossings;
• warehouses and facilities in the field of logistics.

Useful advice!Should not rush to order a large batch of goods, without elaboration. It is recommended to find out all the indicators proftruby to determine its suitability for a particular purpose.

Furniture components are nickel-plated or polished, oval or square profile. In most cases, they are formed of steel strips of 1.5 mm thick. This is due to the need for lightweight structures. Such parts are not designed for the increased load, they are exposed to mechanical stress of a destructive nature. Typically, furniture components are thin-walled articles of small length:

• Details square sizes ranging from 10x10 to 30x30 mm;
• elements of rectangular form - from 40h25 to 20x10 mm;
• blank oval and flat oval type within format 10x20 mm.

Furniture profiled pipe rolling is produced in accordance with the specifications of enterprises, e.g., TU 14-105-737-2004, and also according to GOST standards listed previously. High requirements for surface quality and geometry of the tubes. Oval and flat-oval profiles aesthetic, they are smaller. Price per meter of profile pipes used for furniture production will be much higher than the cost of other types of pipe rolling products.

The pipe sections are: size and price, the purpose and functionality

Square tube are used in various industries, including the production and installation of steel structures for indoor and outdoor use. On the surface quality of them do not impose specific requirements. General purpose profile is produced based on the hot-rolled steel strips, the thickness varies in the range 1.5-5 mm. According to the functional characteristics or conditions of use of the product are classified into these types:

• metal profile general and special purpose;
• products for the oil and gas exploration and transportation;
• drill and casing equipment;
• compressor and pump equipment;
• water pipes;
• heat-resistant steel products for the boiler;
• chemical equipment;
• major highways;
• steel poles with ribs for construction;
• durable, multi-purpose products.

Important! In order to improve the quality or reduce the cost of products at the customer's request can be varied to change the technology and steel grade.

The use of rental common in engineering and construction, agriculture, communications and oil systems. All the parameters, including the length of pipe and a wall thickness, regulates GOST 13663-86.

Prices for pipe- products:

1. Square profile - from 52 thousand. rub. / 1 ​​m and 22 rubles. per 1 running. m.
2. Rectangular profile - from 51.5 thousand. rub. / 1 ​​m and 26 rubles. per 1 running. m.

The length of the tube segments, depending on the application, varies from 1 to 12 m.

The properties of the steel section for furniture production

Design features of the oval and square profile were evaluated in the production of furniture. They were used as scaffolds and feet, bases for cots and mechanisms for transformation of sofas. Profiles are used as auxiliary elements and for forging and its imitation, as well as decorative pieces. The main functions of the profiled rolled metal - load and aesthetics.

In accordance with features of use of the product are classified into 36 sizes. Furniture pipes have a small format:

• articles rectangular range from 20x10 to 40h25 mm;
• square profile details have a size of no more than 30x30 mm.

Useful advice!In addition to conventional pipes, it is widely used and bent blanks which are recommended to order directly from the manufacturer. metal ductility enables bent steel pipe (arbitrary dimensions) at the desired angle, forming arched and other complex structures.

Sizes of relevant steel tubes dimensional and random length:

Type of pipe rolling	Diameter, mm	The wall thickness, mm
electrically molding	10-100	1-5
hot working	60-180	4-14
cold working	10-120	1-8

pricing mechanism: definition proftruby weight

The wall thickness profile of the pipe, size and weight (tables reflect these figures) are important to determine the weight of finished products. Most businesses and Metal, offering the goods, the price point is not per meter and per tonne. The cost of the finished batch includes all labor costs. In the warehouses of the pipe do not weigh - is taken into account the theoretical weight of the products indicated to the guests.

Due to the large assortment of production is difficult to answer the question of how much weighs 1 meter shaped tube. At this rate, influence the length and wall thickness - geometry with the secondary. There are special computer programs, calculators ( "Metal Calculator", "Range of metal") to help calculate the value of the specified size pipes. They are made various parameters, including the thickness of the profile tubes (stainless steel), the dimensions - and the metal prices are determined on the basis of these data.

Important!Standard indicators allows some deviation - the difference between the theoretical and the actual weight, which should not exceed 7-12%.

Calculations are also produced according to special formulas, which allows to calculate the weight of sheet metal from which the released profile. Guide scanning length of the rectangle or square tubes, the dimensions in meters along the perimeter. This figure is multiplied by the wall thickness (in mm) and a specific gravity of steel (e.g., 7.85 g / dm³). This is indicative guidelines to help identify the weight of 1 meter of the profile of the said section.

Profile form of delivery - packs, bundles, boxes, cars of different weight, preferably from 1 to 5 tons shipped. is performed by a crane and forklift trucks, transport waggons performed, water and w / d transport.

With a wide range and size range profile pipes are used in various fields construction, furniture manufacturing, agriculture, engineering, and systems refinery. Due to the versatility of profile steel pipe demand for these products is increasing rapidly. In connection with this ever-expanding range of products, as well as the dimensional range.