Table of Contents
The weight of pipes is parameter which determines the weight of 1 running meter of steel part. There are several ways by means of which it is possible to calculate this indicator. These methods have some differences depending on kinds of the pipes differing with section form. Determination of mass of pipes – the serious action necessary for calculation of transport expenses and construction nuances.
For what purposes the mass of pipes from steel is defined
Steel pipes are widely used in the construction sphere. In any project it is possible to meet information on what weight the water communication laid in construction has. The same concerns other pipeline systems and designs executed from profile rolling. The weight of water gas steel pipes is calculated in several ways. What requires calculation of this parameter?
Theoretical weight is necessary for sale as the realization of pipes is enabled taking into account weight, but not length. Thus, definition of this indicator gives the chance to calculate the cost of single party.
Calculation of mass of these products is used in construction for determination of durability of future design. This parameter allows to learn what loadings the framework made of pipes will be able to transfer.
Pay attention! Finding of unit weight helps to increase the accuracy of calculations.
And, at last, calculation of weight of metal pipes is made before transportation of products. Transportation has to be made on the special cargo equipment taking into account possible loading. At signing of the contract in which the quantity of products and their weight is specified, it is necessary to be sure that transportation will be carried out for one trip.
Thus, knowledge of mass of steel pipes is necessary condition at their acquisition. Certainly, upon purchase of these parts by the piece there is no need for similar calculation. Determination of weight in such situation can be required only to calculate actual value of products.
As it is correct to calculate pipe weight independently: recommendations
Calculation of mass of steel part of this kind can be executed independently (without use of state standards). First of all it will be required to define the main physical and geometrical characteristics of metal rolling. Calculation of weight of round parts differs from calculation of this parameter at profile pipes a little (rectangular and square).
To determine the weight of meter of the pipe having circular section it is necessary to measure its internal and outside diameters. For profile pipes obligatory step is determination of width and height. In case of need it is possible to use the normative documentation which is in open access on the Internet. It is important to remember that for each kind of these parts there is relevant document.
Many indicators (for example, length) can be defined independently, having used construction tape measure. In order that calculation was the most exact, it is recommended to learn material type, its brand.
To learn about that how many the pipe weighs, it is possible also without carrying out difficult calculations. The key indicators characterizing part are specified in documents (including weight). And also it is possible to use the online calculator in which the algorithm of calculation of weight is put.
Advantages and shortcomings of steel production of pipes
Steel articles have set of advantages to which it is recommended to pay attention. First of all It should be noted that parts from this alloy differ in high strength characteristics. This fact causes their wide circulation in the construction sphere where durability of products is one of the main indicators. The wide range of parts is also considered the important advantage as allows to broaden their operational sphere. In the construction market it is possible to choose without effort suitable in form and technical characteristics of part.
Pay attention! Production and sale of these products are made in running meters. The weight of pipes – the main characteristic having impact on cost.
All steel pipes can be separated into three categories:
- pro-thinned out (square and rectangular);
- non-standard (many-sided).
The serious advantage inherent in these products is that they have high resilience to mechanical influences. Steel pipes perfectly transfer pressure and blows. It should be noted that they have acceptable cost and treat mid-price segment.
Wide variety of types of parts allows to use them in different spheres: construction, economic, etc. Steel articles have small indicator of longitudinal expansion. This very important advantage as many pipes when heating extend and if they are placed in tie, then it can lead to emergence of cracks.
To answer question of how to calculate pipe weight, it is necessary to get acquainted closer with all methods allowing to make this calculation. Knowledge of mass of steel articles is required at all stages, beginning from their acquisition and finishing with mounting.
Rules of calculation of weight of steel pipe
Can seem to many people that determination of mass of pipes is simple business. However similar calculation has set of nuances to which it is necessary to pay attention. First of all it is important to remember that at acquisition of part of steel pipes surely it is required to make check of weight. Any discrepancies in calculations can lead to the fact that there will not be enough material simply.
The surplus of weight can affect construction characteristics of future design. The loading rendered on construction has to be in the limits calculated earlier and specified in the corresponding drawing. The weight of 1 meter of pipe is calculated taking into account steel grade from which the product is executed.
Often it happens so that the actual weight of pipe does not correspond to the unit weight stated in normative documentation. It happens because of features of production. The product which is ideally corresponding to documentation cannot almost be executed.
When determining weight of meter of steel pipe it is recommended to use at once in several ways. It will allow to minimize rated mistakes. If the formula then it is recommended to recheck reliability of final results several times is applied to determination of weight.
Weight of pipes: how to execute calculation of weight when purchasing
Most often producers which are engaged in production of metal pipes of different types sell the products wholesale parties. Sale of separate parts is also made, however its percent is much lower in comparison with big orders which are made out by builders and individuals.
Useful information! Measurement of extent of products of which one party consists is not the convenient decision. To simplify implementation, the cost is calculated taking into account the mass of party which is defined proceeding from the mass of part. For its calculation it is required to know the weight of 1 meter of pipe. It is the fastest way of calculation, however for the customer it is not the best. It is connected with the fact that after use of steel pipes, as a rule, there is some percent of excesses.
For determination of mass of party on production two ways are used. The first of them considers use of the online calculator. Such program allows to calculate the weight of steel parts quickly. Often the online calculator is posted on the website of the company which is engaged in production of steel products. Thus, each buyer can determine the necessary mass of party in only a few minutes and at once issue the order.
The second method allowing to calculate the weight of steel pipe for purchases – weighing. It is made with use of special cargo vehicles. This operation is carried out in 2 stages. First of all the machine (or the trailer) is located on scales that allows to determine its weight. Further the party of metal parts is loaded into it. From the received digit the initial weight of the vehicle is subtracted – the lump of party turns out.
Each buyer can arrive to production if it is required to define other characteristics of party. For example, carrying out calculation of number of pieces of pipes in one order can be necessary. And also it is very often necessary to know length of products. As a result carrying out similar calculations will allow to carry out the order not on weight, and by the number of packagings.
Calculation of pipes from steel: weight of round products and feature of its definition
The round pipes made of steel enjoy wide popularity when laying different communications. It is important to remember that such products have the features of calculation of weight. For definition of this indicator it is necessary to know some physical and geometrical characteristics.
Before calculation the following data will be required:
- wall thickness;
- outside diameter;
- section form;
- steel grade (for the accuracy of calculations).
The easiest way of calculation in this case – use of the special online calculator. Calculation of weight of steel round pipe by means of the special program in which the formula allowing to determine quickly weight is stated is made very simply. Everything that for this purpose is necessary, – to enter necessary parameters of part in the corresponding cells.
Pay attention! It is important to remember that when calculating weight of the product having circular section, key indicator is the alloy grade. Specialists do not recommend to carry out calculation without this characteristic.
The following action is made for finding of required value: the volume of material is multiplied by steel density. The consistency value for steel is the fixed unit and makes 7850 kg/m ³. It is possible to determine the mass of any round part by such calculation (for example, the weight of pipe of 76 mm).
Today there are two methods allowing to calculate the volume of steel round article or part from other material. The first of them assumes calculation of preliminary preparation (sheet) from which production of pipe is carried out. It is necessary to find the difference between volumes of outside and internal cylinders in the second case.
Formulas for determination of mass of steel round pipes
Calculation of weight is made using special formulas. To understand them, it is recommended to study the rated stages and values used at the same time, in more detail. The first formula demands knowledge of diameter of steel article and thickness of its wall. As example calculation of weight of pipe of 219х8 mm is specified. In the beginning determination of the surface area of 1 meter of part is made. Such equation has the following appearance:
S = π x D, where:
- S – area of cut is 1 m of part;
- D – diameter;
- π – mathematical constant which is equal to 3.14.
In finished form (with the substituted values) this formula looks thus:
- S = 3.14 x 0.219 = 0.68 m
After determination of the area of 1 m of round product it is necessary to calculate the volume of the steel spent for production of steel part. For this purpose it is necessary to increase the area indicator received earlier by pipe wall thickness. For determination of the weight of 1 meter of pipe 2019х8 it is required to follow calculations strictly. Let’s consider how it becomes, on example:
V = S x t, where:
- V – the volume of the spent steel;
- S – area of cut of part;
- t – wall thickness.
After introduction of the necessary values the equation takes the following form:
- V = 0.68 x 0.008 = 0.00544 m ³
The last stage of determination of mass of steel round article is multiplication of volume by material density. This parameter contains in special tables of density. For steel as it was already told above, the fixed value is 7850 kg/m ³. So, final stage of calculation of mass of steel pipe:
m (1 m) = V x ρ, where:
- m (1 m) – weight is 1 m of product;
- V – the volume of the spent steel;
- ρ – material density.
Calculation for this formula looks thus:
- m (1 m) = 7850 x 0.00544 = 42.7 kg
It is possible to determine by such method the mass of part of any width (for example, the weight of 1 meter of pipe of 219х10 mm). The digit received in calculation result can not correspond to tabular. In schemes the theoretical value of 1 running meter is specified. There are tables which contain the size of mass of products with certain standard size in tons.
Pay attention! Calculation of this kind allows to receive the weight of 1 running meter of part. To find pipe lump, it is necessary to increase the weight of 1 m by product extent.
The second way of calculation of mass of steel round pipes
There is one more formula by means of which it is possible to calculate the mass of products with circular section. This method assumes determination of volumes of outside and internal cylinders. The first stage in such calculation is finding of the area of outer and inside face of round part from steel. Such way allows to calculate the mass of product of any standard size, for example, the weight of pipe 159 or 219 of mm. Formula on which this calculation is carried out.
S (outside) = π x D, where:
- S (outside) – the external surface area of part;
- π – 3.14;
- D – diameter.
After introduction of necessary values the formula gets more clear form:
- 3.14 x 0.219 = 0.68766 m ²
Further it is necessary to make calculation of the second indicator of the area – internal. For this purpose it is necessary to take away from the outside section determined earlier, the part thickness increased by 2 and transferred to the necessary form.
The equation will have the following appearance:
- S (internal) = S (outside) — t x 2; (t – part thickness).
The ready formula looks so:
- 0.219 — 0.016 = 0.203 m ²
Then it is necessary to increase Pi’s number by the digit received as a result of last calculation. It will allow to determine the inside diameter which is necessary for calculation of weight of pipe 219 mm.
- 0.203 x 3.14 = 0.63742 m ²
The following action assumes subtraction from the outside diameter of the similar indicator corresponding to part inside. As a result we receive ready difference which makes 0.05024. It needs to be increased by 1 m that will allow to transfer number to cubic form (m ³). The last step in this series of calculations is determination of mass of product. For this purpose it is necessary to increase the difference of volumes of cylinders by material density that will allow to calculate the weight of 1 meter of product.
Final settlement looks so:
- 0.05024 x 785 = 39.4 kg
It is necessary to remember that the difference of the results received when using two different formulas is not critical factor. Both values also differ from the tabular weight of 1 meter of steel pipe round with such dimensions. It speaks quite simply. Calculation of this indicator, as a rule, considers admissible errors in sizes while in the formulas considered above standard values have been substituted.
How to calculate the weight of profile pipe (square and rectangular)
Formulas which are used for finding of mass of round pipes are not suitable for determination of weight of profile products. The round kind of metal rolling is more widespread as it is more often applied in construction and economic areas. Profile pipes differ in the fact that sections have other form.
On sale it is possible to meet such options of these products:
For finding of weight of steel profile pipes there are several ways, as well as in case with round parts. Such products are applied in construction, most often to the organization of inserted floors. By means of them framework structures are mounted (both simple, and difficult).
Useful information! The simplest options of frameworks are used at construction of greenhouses on seasonal dachas and also for creation of garage designs.
Application of rectangular or square metal rolling in construction demands accuracy. The mass of products is calculated in advance and it is specified in the project documentation. Specific weight of profile pipe can be determined independently, having used special formulas. The following equation is applied to calculation of mass of square products.
m = (ρ) x 0.0157 x t x (A x 2 – 2.86 x t) x L, where:
- ρ – metal density;
- 0.0157 – constant for calculation of unit weight;
- And – length of the party;
- t – product wall thickness;
- 2.86 – constant value;
- L – pipe extent.
The above-stated formula allows to determine the mass of one part with square shape of section. The weight of party in this case is calculated very simply. For this purpose it is necessary to increase the mass of one product by quantity of pipes. For rectangular parts there is own formula by means of which weight is defined (for example, the weight of profile pipe 40х20х2).
The similar equation looks so:
- m = (ρ/7850) x 0.0157 x t x (A + B – 2.86 x t) x L
A and B values correspond to the extent of the parties of rectangular metal part. It should be noted that the data received as a result of use of these formulas can differ from tabular numbers. However this difference is quite normal phenomenon.
Method of calculation of weight of square pipe: popular options
The mass of the products made of steel and having square section can be determined by different formulas. When carrying out geometrical calculations there are certain nuances which need to be known. Most often the weight of steel part with square section is found by means of the formula assuming multiplication of volume of walls of product by its density.
The specific density of all steel articles is the fixed parameter which is 7850 kg/m ³. Application of the method considering use of volume of the parties and density allows to determine the weight of running meter of profile pipe quite precisely.
For finding of mass of meter of part the formula in which it is necessary to increase product thickness by the area of walls is most often used. The area is defined by multiplication of length of part by its width (for rectangle). The received digit needs to be increased by 4 (quantity of walls in square pipe). After calculation of the weight of 1 m of part it is necessary to enter the received value in the final equation allowing to calculate the mass of all product. Let’s consider this formula.
m = 7850 x t x 4 x A x 1, where:
- A – product dimensions;
- t – part wall thickness.
Pay attention! For determination of weight of 1 m it is the simplest to use the table of weight of steel square pipes.
One more popular method by means of which the mass of steel square pipe is defined, assumes application of the formula having constant.
m = (A — t) x t x 0.0316, where:
- A – product dimensions;
- t – part thickness.
As example it is possible to determine the weight of 1 meter of pipe 80х80х4 by this formula.
The ready equation containing the substituted values will look as follows:
- m = (80 — 4) x 4 x 0.0316 = 9.6 kg
However the method considering use of these formulas nevertheless is not the simplest and fast. In case of need it is possible to determine the mass of meter of product, using the tables containing all necessary information on rolled iron.
How to calculate the weight of profile pipe: table
For calculation of unit weight of profile it is possible to use different techniques. The most popular of them is the tabular way. Application of special tables which can be found without special work in normative documents allows to save time necessary for calculation. Schemes contain all necessary geometrical parameters and also physical data to which carry also weight.
Tables of the weight of 1 meter of steel pipes include already calculated data which are easy for defining, being guided by the part sizes. By means of similar tables it is possible to calculate the lump of the pro-thinned-out product quickly. For this purpose it is necessary to increase the value corresponding to the weight of 1 meter by pipe extent.
It should be noted that there are special tables in which the number of meters in 1 ton of products is specified. It is very simple to use tables of weight of steel profile pipes. Data from these tables can be applied not only to determination of weight of 1 meter, but also to other, more difficult construction calculations.
Ways of determination of weight of steel electrowelded pipes
The mass of electrowelded part depends on several factors. First of all It should be noted such indicator as specific density of material. Certainly, important role is played also by geometrical parameters of part.
The most important of them:
- diameter (for round parts);
- width and height (for the pro-thinned-out rolling);
Pay attention! For carrying out calculations it is necessary to understand that part length when determining specific or (as it is called still) theoretical weight will be equal to 1 m.
Density of this material – the constant corresponding to number of 7850 m ³.
Such methods are applied to determination of weight of electrowelded pipes:
- online calculators.
Each of the above-stated ways assumes obtaining value which is not ideal. Some factors have impact on the final result which is approximate. For example, the fixed value of density (7850 m ³) is used for calculation of unit weight of all kinds of steel pipes. However different steel grades are applied to each type of parts. Thus, the fixed value has impact on the end result which differs from actual.
The difference in density of different steel grades is not strongly felt when calculating if the volume of party insufficiently big. In tables of steel electrowelded pipes weight also is approximate. Besides the final results which are contained in tables are quite often rounded (for convenience).
One more reason of approximateness of calculations is in what to carrying out calculations is applied by ideal dimensional parameters. They, as a rule, differ from actual as do not consider curves in corners of pipes. The curve as parameter can be present at profile pipes. How many does such product weigh? Best of all for the answer to this question to use the table or the online calculator. It will allow to save time.
The real part differs in accuracy of welding seams. Such seams can have different flows of metal. One more factor having impact on inaccuracy of calculations – production tolerances. Universal method of determination of weight – use of formulas. But most often this option is not repaid as not each person will be able to carry out the difficult calculation considering application of set of auxiliary geometrical and physical parameters.
Calculation of weight of corrosion-proof pipe: sequence of actions and feature
Pipes as which material of production serves stainless steel differ from normal steel articles in the fact that they more resistant to adverse operational conditions. For example, they, unlike normal steel pipes, have high resilience to rustiness.
Useful information! It should be noted the increased durability of these products which is reflected in effective life.
How to calculate the mass of part from stainless steel? Similar operation is not very difficult. For determination of unit weight it is necessary to multiply such parameters as density of material and volume. In turn, to calculate product volume, it will be required to increase part surface area by wall thickness.
Let’s consider how to determine the weight of pipe of 57х57х3 mm from stainless steel, on example. Calculation in this case includes 3 stages. The first formula will have the following appearance.
S = B x L x 4, where:
- S – area;
- B – width of 1 wall;
- L – product length;
- 4 – quantity of walls.
The ready equation with the substituted values looks so:
- S = 57 x 6 x 4 = 1.368 m ²
It is possible to determine the mass of different standard sizes by this method (for example, the weight of pipes 108, 120 or 150 of mm). After calculation of the area of corrosion-proof part it is possible to start the following stage. The second step considers scoping of pipe. For this purpose, as it was already told above, it is necessary to multiply the surface area and thickness of wall:
- V = S x t
- V = 1.368 x 3 = 4, 104 m ³
And, at last, after calculation of volume of product it is possible to find also its unit weight. For this purpose it is required to increase the fixed density of steel, equal 7850 m ³, by part volume.
Let’s consider the equation:
- m = V x 7850
- m = 4.104 x 7850 = 3.2 kg
For determination of mass of the pipe made of stainless steel there is also other, simpler method. It is suitable for round parts. To carry out calculation, it will be required to subtract wall thickness from outside diameter. Then the received difference is multiplied by thickness and the fixed number which makes 0.025 kg.
Formula of calculation of weight of pipes with non-standard section
In addition to round and profile products, there is one more widespread look – pipes with non-standard section. Many people ask question of how to find the mass of such parts.
In the modern market of steel pipes such options of nonconventional section most often meet:
It is possible to find tables of weight of the pipes having non-standard section in the Internet. Besides, there are special formulas allowing to carry out independent calculation of this parameter. The operational sphere of such products is quite extensive. They are used for mounting of fences and other various barriers and also as handrail. On productions these parts are part of various designs. The formula is applied to determination of unit weight of the pipes having non-standard section.
m = ρ x S x L, where:
- ρ – material consistency value;
- S – area of cut;
- L – product length.
This formula is universal. Therefore by means of it it is possible to calculate the specific weight of the parts having the different form of section. The equation allows to answer question of how to learn pipe weight with non-standard section.
Pay attention! To define as far as products from one party conform to the requirements stated by the manufacturing company it is recommended to execute simple check. For this purpose it will be required to choose 3-4 any parts from party and to carry out calculation of mass of each of them. Comparison of the obtained data will allow to provide the range of admissions.
If the weight of pipes is already known then the possibility of calculation of total length of party appears.
For this purpose there is special formula:
- L = m / ρ x S
That the end result was the most exact, it is necessary to consider some other factors. It is possible to distinguish the following from them: composition of alloy, uniformity of wall thickness of part, corrosion rate. And also air humidity and its temperature have impact on weight.
Table of weight of steel pipes: councils for use
In this case the special table can be data source. Its choice is carried out depending on product type. Today on the Internet it is possible to find without effort tables for determination of mass of parts of different materials (for example, the weight of cast iron pipe of 100 mm).
Finding of weight demands in the tabular way observance of two basic rules. First of all it is very important not to be mistaken with the choice of the table. For this purpose it is necessary to check whether there corresponds the name of state standard to material of product which mass you want to determine.
The second rule – you should not rely on the data defined by the table completely. As a rule, the specific weight of pipe does not correspond to actual. Thus, any calculation will be only approximate. For small parties the similar distinction is not serious problem.
As example it is possible to take steel part sizes 60х60х3. The weight of 1 meter of pipe of this kind is 5.25 kg if to be guided by tabular calculation. This product belongs to profile group and has walls, equal on the width. The actual mass of product with such dimensions can differ. The maximum assumption in this case makes 10% of lump (52.5 g).
The tabular way is very good in that case when you have no time for carrying out long, difficult calculations. However it is always worth remembering error which is present in this case.
Use of the online calculator for determination of weight of pipe
The online calculator – very easy way by which it is possible to determine the mass of steel pipes quickly enough. It is necessary to tell that there are programs allowing to calculate the weight of the products made also of other materials. The online calculator works on the registered algorithm.
The formula in this program considers the following characteristics:
- width and height (for profile pipes);
- diameter (for round products);
- wall thickness;
It is very simple to use the calculator of weight of steel pipes. Everything that for this purpose is necessary, – to know necessary values and to enter them in the corresponding cells. Many online calculators demand knowledge of steel grade. It gives the chance to carry out more exact calculations.
Pay attention! By means of calculators it is possible to carry out calculation of the parts made of copper, galvanized steel, stainless steel and cast iron.
It should be noted that calculation differs in efficiency and can be made even for dimensional products (for example, the weight of 1 meter of pipe of 530х8 mm). When using the calculator it is necessary to be attentive. In case of the wrong filling of cells the result will be incorrect.
The weight of 1 meter of metal rolling is defined by three ways: formulas, tables, calculator. Each of these methods is good in own way, however all of them have one common feature – approximateness of calculations. Obtaining weight of 1 meter of metal rolling allows to calculate the weight of all party.