The assortment of water and gas pipes is often needed for online calculation of the weight of pipes of water and gas supply systems during construction, laying communications, when laying water pipes, gas pipelines. The full assortment of pipes is used in the installation of heating systems and the execution of pipeline parts, in external drinking water supply networks.
GOST 3262-62 for water and gas pipes allows the production of rolled pipes without threads at the ends or with threads, while the length of black pipes without threads ranges from 4 to 12 m, and black and galvanized ones with threads - from 4 to 8 m.
Steel water pipes GOST 3262-75 of increased manufacturing accuracy is used for parts of water and gas pipelines.

When welding pipelines in the case when water and gas pipes are used, manual welding or a sleeve connection is used. Couplings are used for VGP pipes with a normal wall thickness, welding is possible in all cases: light, conventional, reinforced types of VGP.
The assortment of steel pipes for water and gas supply of normal accuracy allows the manufacture of steels in accordance with GOST 380 and GOST 1050 without standardizing mechanical properties and chemical composition... The most popular assortment of pipes - black rolled pipes, is used for water pipelines, gas pipelines and heating systems. VGP pipes of increased accuracy are made of steels in accordance with GOST 1050. The range of galvanized pipes is used for parts of water and gas pipelines with high requirements for durability and corrosion resistance.

A round pipe is a type of rolled metal product range, which is produced by the method of electric welding. The technology for the production of rolled pipes consists in the fact that steel sheet blanks from a strip (steel sheet in coils) go through the process of unwinding and straightening on rolls, cut to the size of a given length and width, after which the edges of the strips are processed by chamfering. Next, the strips are welded into the butt, the sheet blanks enter the storage device for feeding the material to the forming mill, where they are profiled into round tube required diameter size. Pipe wall thickness (thin-walled, thick-walled) depends on the thickness of the sheet strip. At the next stage, a longitudinal seam is welded (either in a straight line or in a spiral) by melting the edges of the metal with high-frequency currents, closing them into a permanent connection to obtain solid metal over the entire section of a round pipe. At the final stage of the technological process, beads are removed on the finished product and electrowelded pipe cooled, calibrated to comply with GOST diameters within tolerances and cut to the required size along the length.

Correspondence of inches to the nominal diameter of the pipe DN

1inch \u003d 2.54cm

Quarter inch - 8 mm; half an inch - 15 mm; three quarters of an inch - 20 mm; inch - 25 mm; inch and a quarter - 32 mm; one and a half inches - 40 mm; two inches - 50 mm; two and a half inches - 65 mm; 4 inches - 100 mm.

This ratio between inches and millimeters greatly simplifies the selection of imported pipeline fittings for Ukrainian pipes, but it is important to understand that such sizes are also suitable for domestic bends, transitions, water taps, gas valves. Imported couplings, taps, bends, tees, squeegees (and now imported stainless pipe fittings are often used) have real inch sizes, which are somewhat different from the connecting dimensions of the VGP pipes.

Pipe diameter table - How many kilograms (kg) are in one meter (m) of pipe

Diameter mm - inch	Outer	Lungs			Conventional			Reinforced
		Wall thickness s, mm	Weight 1m, kg	Meters per ton	Wall thickness s, mm	Weight 1m, kg	Meters per ton	Wall thickness s, mm	Weight, kg / m	Meters per ton
8 - 1\4
15 - 1\2
20 - 3\4
25 - 1
32 - 1 1\4
40 - 1 1\2
50 - 2
65 - 2 1\2
100 - 4
										46,2

Running meter weight steel pipe in the table - theoretical mass. Actual value may vary by 4-8%

To convert meters into kilograms of pipe, you need to multiply the weight of a running meter in the assortment table by the total length of rolled pipe.

Standard designation of pipe diameter in the assortment (see table):

1. The inner diameter is the main dimensional characteristic of pipes and connecting parts (fittings) to them.
2. Outside diameter of pipes (in the table - dn). Steel tubular products are classified according to their outer diameter: small pipe sizes - 5-102 mm; average sizes - 102 - 406 mm; large sizes 426 mm and more.
3. The nominal pipe diameter (in the table - Dy, DN) is the nominal size of the inner diameter in millimeters or its rounded value in inches.
4. Nominal diameter (in the table Dn, Dn)
5. Wall thickness, mm (in table S).

Maximum deviations for the mass of pipes in the table of diameters and weight data should not exceed + 8%

How much does 1m of steel pipe weigh? Weight calculation

If there is no pipe table, then the calculation of the mass of 1 running meter can be performed using the calculation formula on a regular calculator and find out how many kg are in a meter of pipe:

Calculation of the weight of stainless steel pipe products: m \u003d Pi * (d - s) * s * R / 1000

Formula for calculating the weight of a "black" pipe: m \u003d (d - s) * s / 40.55

where:
m - theoretical mass of one running meter of the pipe (specific weight) in kg,
Pi\u003d 3.14 (constant in our calculation),
d - outside diameter in mm,
s - wall thickness in mm,
R - specific gravity of steel in g / cc cm.

The mass of 1 m of VGP pipe in the assortment is calculated with a specific gravity of steel equal to 7.85 g / cm3. Galvanized steel tubular products are 3% heavier than non-galvanized ones. To automate the pipe calculation process, you can use online calculator pipes (round, VGP, seamless, electric-welded), presented in the section of the site "Range of rolled metal products". In this pipe calculator, you can select the material from which the pipe is made for a more accurate weight calculation.

Steel pipes, depending on their parameters and cross-sectional dimensions: diameter and wall thickness, have a different scope of application:

• installation of heating systems, laying of water pipelines, gas pipelines, installation of sewerage, water disposal and gas supply;
• production and construction of fences and barriers, protection of electrical cables from damage;
• transportation of substances under pressure over long distances: oil, chemicals and gas;
• production of wells, casing strings in mining;
• manufacturing and installation of simple and complex metal structures of buildings and structures;
• distribution of tap water, supply of industrial water in irrigation systems;
• production of furniture frames;
• exploration and development of oil and gas fields, etc.

Conventional designation of pipes according to GOST 3262-75

Examples of symbols:

Ordinary steel pipe, non-galvanized, of usual manufacturing accuracy, unmeasured length, with a nominal bore of 20 mm, wall thickness of 2.8 mm, without thread and without coupling: water pipe 20x2.8 GOST 3262-75.

Example of designation: pipe M-20x2.8 GOST 3262-75 - with a coupling.

Designation: pipe Р-20х2,8-4000 GOST 3262-75 - measured length, with thread.

Steel water and gas pipes for thread rolling are marked: the letter H is indicated in the symbol, the letter D is indicated in the marking of VGP with a long thread.

For steel tubular products of increased manufacturing accuracy, the letter P. is indicated in the symbol after the size of the conditional passage.

Water and gas pipes undergo 100% non-destructive eddy current testing and are supplied with a hydrotest guarantee.

GOST technical requirements

In accordance with the requirements of the standard, depending on the type, pipes must withstand the following hydraulic pressure:

Ordinary and light - exposed to an internal hydrostatic pressure of 2.4 MPa (25 kgf / cm2);

Reinforced - the action of a hydrostatic pressure of 3.1 MPa (32 kgf / cm2).

Steel pipe grades

Pipes are made of steels according to DSTU 2561 (GOST 380), parts of water and gas pipelines are made of steels corresponding to GOST 1050.

Seamless pipe weight. Table. 4.58 / 5 (91.67%) 24 voted

Seamless pipe weight. Table.

Seamless steel pipe is made by several methods, namely: rolling, drawing, forging and pressing. This view the pipe has a one-piece construction and does not have butt seams along its entire length. There are two types seamless pipes: hot-rolled (hot-worked) GOST 8732-78, are made from blanks or ingots for high temperature, one of the four methods (given above) and cold-rolled (cold-worked) GOST 8734-78, their manufacturing method differs from hot rolled in lower temperatures. In cold rolled production, ready product has higher quality and material accuracy.

The use of this pipe can be different from mechanical engineering to utilities. Most often, the seamless type of pipe, due to its strength characteristics, is used where high reliability and durability is required (gas, oil pipelines). This type of pipe is economically advantageous, since it has an affordable price in the world market.

Seamless pipes they produce measured, unmeasured and multiple measures of length, their length can be in the range from 4 to 12 meters, in some cases these dimensions are neglected.

Depending on the wall thickness, seamless pipes are divided into thin-walled and thick-walled. They are expressed by the ratio of the outer diameter of the pipe to its wall thickness. If this coefficient lies in the range from 6 to 12.5, then such a pipe is considered thick-walled, and if from 12.5 to 40, then thin-walled.

It happens that this coefficient is less than 6, such a pipe is called "extra thick-walled".

Seamless pipe weight. Table.

For calculation weight of 1 running meter seamless pipe you can use

Any metal rolling technology has one of such main characteristics as specific gravity. For a steel pipe one meter long, the mass can be calculated regardless of the type of cross-section according to the corresponding calculation formulas or tables.

What is the specific gravity of the pipe?

An indicator such as the specific gravity of a steel pipe has a numerical value of the weight of one running meter of this product. This indicator is very convenient in that, regardless of the volume of steel metal products, it makes it possible to quickly calculate its total mass. For this you just need to measure or know the length in meters the total number of the proposed or existing batch of pipes. You will also need data on the dimensions of steel pipes:

• side lengths - for profiled pipes (rectangular, square);
• outer section diameter for round tubular products;
• steel grade (for a more accurate calculation);
• product wall thickness.

This information can be found in the accompanying documents for rolled metal or measured by hand. Each pipe size has its own specific specific gravity. This value can be determined by one of possible ways and after multiplying by the total length of the rolled pipe, the required total weight of the pipe (one or the total amount of this metal product) is obtained.

Why do you need to know the specific gravity?

The total mass of steel pipes is important and necessary quantitative information in any area where this rental is used. At the plant that makes the pipes, you need to know how much raw material is needed to fulfill an order to produce a batch of a certain product. In this case, one cannot do without information about the total weight of the delivery of the finished pipeline to the consumer. Financial and reporting, accounting, road transport, warehouse and other documents reflect the movement and accounting of metal products in kilograms and tons.

You need to know the weight of the rolled pipe in order to choose the option for transporting it to the destination and select the required mode of transport. This indicator is used during the purchase and sale, as well as in the financial calculation for pipe products. The mass of steel pipes is an integral indicator of calculations of strength, reliability, weight of the fabricated metal structures and is entered into the corresponding technical documentation... And anyway it can be quickly identified, knowing the general dimensional data and the length of the used rental, using the appropriate specific gravity one running meter of pipe.

Methods for calculating the specific gravity

The weight of any pipe will depend on the specific density of the composition from which the pipe is made and its geometric parameters:

• length;
• height, width or diameter;
• wall thickness.

Therefore, it is indicated as the mass of volume (in m. Sq.) Of a profile or cylindrical shape, filled with homogeneous steel with the required density (in kg / m. Cubic meters). The length of the pipe when determining its specific gravity is one meter. For steel pipe, for any calculations, the density of the composition from which it is made is always taken as a value of 7850 kg / m. cub. To determine the weight of one meter of a steel pipe (specific gravity), choose one of the following methods:

• by calculation formulas;
• using tables where the required data is indicated for standard sizes pipe rolling.

In any case, the data obtained is only a theoretical calculation. This is due to the following reasons:

• when calculating, you often have to round off the calculated values;
• in the calculations, the shape of the pipe is assumed to be geometrically correct, that is, metal beads at the weld joint, rounding in the corners (for profile rolled products), reduction or excess of dimensions relative to standard ones within the permissible GOST are not taken into account;
• the density of different steel grades differs from 7850 kg / m. cub. and for many alloys the difference is quite significant when determining the weight of a large number of tubular products.

Using special tables determine the most approximate theoretical indicator of the specific gravity of pipe rolling, since in their compilation, complex mathematical formulas were used that took into account the production technology and geometry of the products as much as possible. To use this calculation option, first, according to the available data on pipe rolling, its type is determined. After that, they find in the reference literature a table corresponding to this metal rolling or GOST for this assortment.

So, for example, for steel profiled square pipes, you need to use GOST 8639-82, and for round longitudinal - GOST 10704-91. The next step in determining the specific gravity: according to the available indicators on the dimensions of pipe rolls, find the required value in the table. In the case when the measured dimensions of the product or the wall thickness do not correspond to some tabular value, then the specific gravity indicator is selected for the most closely located typical dimensions.

The tabular version of the calculation is good because it does not require any calculations, which excludes the possibility of a mathematical error in calculations. But this method implies the availability of special literature. The most versatile option is to use mathematical formulas. This method can be applied in any conditions, even, so to speak, "field", far from the possibilities and benefits of civilization.

Determination of the specific weight of the pipe by the formulas

As already mentioned above, the calculation is based on the determination of the volume of raw materials consumed for the production of one meter of rolled pipe. Then this value must be multiplied by the density of the composition (in the case of steel, by 7850 kg / m3). The required volume is determined in this way:

All calculations are made only after converting the initial indicators into kilograms and meters. Determination of the volume of circular and cylindrical section of pipes occurs according to the following formula:

V \u003d RхRх3,14хL, where:

• V is the volume;
• R is the radius;
• L - length.

Another simple formula, but for round steel pipes:

Weight \u003d 3.14x (D - T) xTxLxP, where:

• D is the outer diameter;
• T is the wall thickness;
• L - length;
• P is the density of the steel.

There are two more formulas, but for steel shaped pipe... The original the data must be converted to millimeters, the answer will be in kilograms. Formula - for a square pipe:

Specific gravity \u003d (A – T) хTх0.0316

For rectangular pipes:

Specific gravity \u003d (A + B – 2хT) хTх0.0158

That is, to determine the exact weight of the material you can use special tables, where the mass of pipes is indicated, taking into account the section, diameter and other indicators. If this table is not at hand, then you can always use a special calculator, where to calculate the required values, you just need to enter the necessary data, such as the wall thickness and the type of section of the structure. Everyone chooses how to determine the specific gravity.

If you need to find out the weight of a running meter of a pipe, fittings or other rolled products, then the most convenient and simple solution is our metal calculator.

First, you select the nomenclature for which you want to calculate meters in tons.

Next, you select the size of the product.

For the convenience of using the calculator, we have developed an interactive search bar that will facilitate the selection of product sizes

If it is a round bar, then the list contains diameters (reinforcement 10.12, etc., circle).

If you want to know the weight of the pipe, then pay attention to the wall thickness.

To find out the weight of the sheet, you need to choose the thickness, and then the calculation of the mass will occur per square meters.

Then data in meters or tons is entered into one of the fields

If you enter values \u200b\u200bin the field "meters" ("square meters" to find out the weight of the sheet), then you will know the total mass of the entire length (for example, the weight of the reinforcement).

If you are interested in calculating the length by mass, then the data must be entered in the "tons" field.

You can record and print the results obtained

Our calculator allows you to write down the calculated calculations in a special field so that you can easily see your latest calculations. To do this, you need to click on the "Save" button, and the result of your calculations will appear in a special field.

Also, after you have calculated all the necessary data, you can click on the "Print" button and in a convenient form get a printout of the results.

You can compare prices for selected items from all suppliers.

To do this, you need to write down your calculations. Please note that the field with the recorded results contains items that are of interest to you. Next, click "Calculate the entire application online" and the system will take you to a page where the results of processing supplier prices will be shown.