Steel wire is the simplest and most widely known metal product. The shape and method of its manufacture are simple, but... there are subtleties everywhere - and such seemingly simple hardware as steel wire also has its own characteristics, which are regulated by the relevant GOST. There is also a GOST for the most common type of steel wire - general purpose.

There is also a GOST for the most common type of steel wire - general purpose.

The diameter of this product can be very different - from tenths of a millimeter to several centimeters, but the most commonly used will still be rolled products with a thickness of 0.8 mm to 6 mm, made from steel grades 08kp, St10ps or St10 by cold drawing.

All these types of steel are low-carbon steels and are highly flexible.

The wire obtained from them belongs to the “general purpose” category and can be produced either with an additional coating or in its pure form.

Low-carbon wire is usually divided into two categories: heat-treated and heat-treated. Heat treatment reduces the elasticity of the wire and increases its bendability - therefore, nails can be made from this wire, and the wire itself can be made from heat-treated wire.

Heat-treated wire can be light (if it was calcined without access to oxygen) and black (if, as a result of interaction with atmospheric oxygen, it was covered with a layer of oxide - turned blue). Black wire is considered more resistant to corrosion, but it will be more difficult to coat it with another composition that prevents rusting - therefore consumers prefer to order wire with a light version - it can be coated with zinc, varnish, etc.

As for the use of such wire, one of the most common uses is to fasten reinforcement. That's why steel wire general purpose is often also called “knitting” - suitable in its properties for tying reinforcement. General purpose wire produced in accordance with GOST 3282-74 is best suited for these tasks.

It is used in the manufacture of reinforcing reinforced concrete frames wherever the use of welding is not specifically specified - that is, in most reinforced concrete products. Any worker can easily be taught how to fasten reinforcement bars using it, and you can check the quality of his work simply by eye - whether there are wire bundles in the right places or not.

But minimum requirements fairly high demands on the material dictate to the employee.

Which ones exactly? GOST 3282-74 speaks about this.

Main indicators

First of all, it contains requirements for the mechanical characteristics of annealed wire. GOST stipulates that the relative elongation of heat-treated wire should be in the range of 15-20% for “bare” wire, or 12-18% (if the wire is coated).

GOST 3282-74 also divides wire into several types:

• in terms of production accuracy into normal and increased accuracy;
• by processing method - annealed and unannealed;
• by surface type - with and without special coatings;
• by tensile strength (for wire that has not undergone heat treatment) -on products first and second groups;

For thermally untreated wire, the main indicator will be tensile strength, which should have the following values:

To control these main indicators of the quality of tying wire, GOST requires acceptance finished products, testing the mechanical performance of 3 percent of the spools or coils from each shipment.

The geometric parameters of the wire (thickness and cross-sectional shape) must be checked on 5% of the coils, and the surface quality (scratches, dents, and rips with a depth not exceeding 0.25 of the maximum permissible) must be checked in general in all packages.

If the test results for at least one of these parameters turn out to be unsatisfactory, then another series of tests is carried out - but this time using a sample doubled.

How else is wire checked according to GOST?

In addition, “bare” unburnt wire produced in accordance with GOST 3282-74 can be tested for a number of other indicators, namely:

• for winding ability
• for tear resistance
• for stretchability
• for resistance to repeated bending

Features of wire packaging

For wire whose quality meets the specified parameters, GOST determines the conditions of packaging and storage, of which the main requirements will be:

• long pieces of wire are wound into coils and tightly fixed;
• each coil should consist only of a single piece of wire;
• in a coil of wire, the ends should be positioned so that they can be easily detected;
• coils formed from wire are tied with at least 3 annealed wires;

Coils of wire of small sections must, in addition, be wrapped in paraffin-impregnated paper (if the cross-section is less than 0.5 mm) or polymer film (if the cross-section is from 0.5 to 1 mm.)

When storing large-diameter wire, GOST allows (at the customer's request) the use of anti-corrosion lubricant coatings based on technical oils I-50A, I-20A or ZhKB-1, NG-203.

Technical specifications for general purpose low-carbon steel wire in accordance with GOST 3282-74

Low-carbon steel wire for general purpose complies with GOST 3282-74. OK wire is supplied heat-treated (t/o) and thermally untreated (t/n) of normal and increased accuracy. OK wire is used for the manufacture of metal mesh, construction nails, for tying packages of pipes, boards and other packaged materials during transportation, loading and storage, as well as for fencing and other purposes. OK wire is supplied in coils and coils weighing up to 1.0 tons.

1. Raw materials for making wire carbon steel wire rod serves ordinary quality according to DSTU 2770-94 (GOST 30136-95). The wire is made thermally untreated, without coating, in a cold state, of normal accuracy.

2. Wire diameter and maximum dimensional deviations:

2.2 The mechanical properties of the wire must correspond to those indicated in the table. At the consumer's request, heat-treated wire is manufactured with a regulated relative elongation.

Wire weight GOST 3282-74

GOST 3282-74 Low-carbon steel wire for general purpose

Rice. Cross section wire

This table uses the following notation:
d - wire diameter;
. the sign means that this wire diameter is provided for by GOST 3282-74

Note: The theoretical mass of 1000 m of wire is calculated based on the nominal dimensions at a steel density of 7850 kg/m and is a reference value.

If you want to buy knitting or nailing wire GOST3282-74, then price is only one variable that can be misleading. An important factor is the manufacturer. There are manufacturers of knitting and nailing wire whose plus diameter tolerance is so significant that f 1.2 t/o may turn out to be, for example, f1.25 or more. This largely depends on the honesty of the plant and the quality of the equipment. How newer equipment, the smaller the error, as a rule. The “increased” diameter of the wire GOST 3282-74 gives a smaller amount of product per meter with an equal amount of tonnage. Therefore, it is not entirely correct to compare the price of wire with a plus error in diameter and products manufactured in accordance with the required manufacturing standards. ()

What should you pay attention to when purchasing heat-treated (knitting) wire GOST 3282-74?

Heat treatment can vary greatly in each case. The fluctuations are very significant. The same wire may be identical according to the manufacturer's stated name, but in use it may be radically different. One can be almost as hard as non-thermally treated, while the other can have excellent softness qualities. Wire GOST 3282-74 t/o from one plant can be uniformly soft along the entire length in a coil, while from another it can differ in this parameter even in the same coil. There are craftsmen who carry out “homemade” heat treatment with the appropriate result.

So how to do right choice, the result of which will be high-quality knitting and nailing wire and an adequate price?

1. Choose a supplier who will provide the opportunity to look at the wire, touch it, give a test sample, and advise on what is best to choose for further use.
2. Select a supplier of wire GOST 3282-74, which clearly specifies the cost for a specific manufacturer, in order to avoid “surprises” when receiving products.

You can buy knitting and nailing wire GOST 3282-74 in the cities: Moscow, Balashikha, Podolsk, Orel, Kursk, Tula, Belgorod, Voronezh, Sochi! There is a large selection from the best trusted manufacturers available at warehouse complexes! If you request a price reduction for other options, we will offer them too, explaining in detail what is hidden under the “low price”. The choice is yours!

General purpose low-carbon steel wire is produced from 0.2 to 8 mm using the cold drawing method. The most popular diameters are from 0.6mm to 6mm and it is this range that is maintained in constant stock. The raw material for the production of the product is hot-rolled wire rod. Low-carbon steel wire for general purpose can be: heat-untreated (nail/hard), heat-treated (knitting/soft), uncoated, galvanized, heat-treated, galvanized, heat-treated. Product standard: skeins (0.02-2.25 tons), coils (0.3-0.6 tons), rosettes (0.45-0.8 tons) and coils 0.8-1.2 tons. You can find out more about how each type of steel wire is wound, how a coil differs from a rosette and a coil, as well as additional background information

Wire GOST 3282-74 is purchased from us for use in many fields of activity. For example, popular areas for the use of low-carbon steel wire: the production of woven mesh (chain-link), the production of woven mesh, hanging mesh chain-link, hanging telephone and other cables, fastening meshes reinforcing thermal insulation, also used for tying reinforcement - 1.2 mm, in construction and manufacturing Reinforced concrete materials, for tying bales: waste paper, garbage, cotton, ingots - 3 mm (in metallurgy), forests - 6 mm, making Christmas trees, wreaths, etc.

Please note that the prices on the website are given ex-warehouse conditions in Moscow!

Wire calculator available below in the online store table. Click on the calculator icon on the right in the table and get a recalculation of the weight of a meter of wire, as well as useful information according to the cubic capacity of your application!

Wire, the price of which is indicated above, is a metallurgical product in the form of a cord or thread. To make it, a drawing process takes place through successively tapering holes. source material: steel, copper, also other metals and alloys.

Our company sells wire made in accordance with GOST 3282-74. Low carbon steel is used for its production. Areas of application:

• production of nails;
• production of linking elements;
• production of construction fencing and other products.

Steel wire

The price depends on many factors, for example, at the moment There are two main production technologies: with heat treatment; without heat treatment. There are also two types of coating: galvanized and non-galvanized. Everyone can distinguish heat-treated non-galvanized wire: such wire has a light color.

Products are also available in two levels of production accuracy - normal accuracy and increased accuracy. The diameter of the section lies in the range of 0.16 .. 10 mm, while galvanized has a diameter of 0.2 .. 6 mm. Steel wire with a cross-section of 0.1 .. 7.5 mm from alloys with increased electrical resistance has found application in heating elements and resistors.

GOST allows a certain percentage of surface defects, for example local rippling, relatively small dents or shallow scratches. Such defects have a maximum permissible deviation threshold of 25 percent.

You can buy wire in a choice of coils or spools. To avoid entanglement of turns, it is necessary to very accurately observe the row when winding, and do this without effort. One skein necessarily contains no more than one piece of wire, while a spool is limited to 3 skeins.

Galvanized wire

Galvanized wire is one of the leading materials among metallurgical products; it is constantly required in everyday life and construction. Wherever it is used: this is the production of nails, cables, nets, all kinds of springs, wires, and reinforcement of reinforced concrete structures, and as fencing. The list is endless!

The cross-section can be either round or any other, for example oval, square, etc. As mentioned earlier, the cross-section diameter lies in the range of 0.2...6 mm.

We also offer to buy welded galvanized mesh wholesale and retail.

GOST 3282-74

INTERSTATE STANDARD

STEEL WIRE
LOW CARBON TOTAL
DESTINATIONS

TECHNICAL CONDITIONS

Date of introduction 01.07.75

This standard applies to round low-carbon steel wire intended for nailing, lashing, fencing and other purposes.

1. TYPES AND MAIN DIMENSIONS

1.1. The wire is produced:

by type of processing:

heat treated - O;

thermally untreated;

by surface type:

without coating;

coated.

Heat-treated uncoated wire is produced light-colored (C), and by agreement between the consumer and the manufacturer, black (B) wire can be produced.

Coated wire is divided into:

galvanized 1st class - 1C,

galvanized 2nd class - 2C;

by manufacturing accuracy:

increased - P,

normal;

by temporary tensile strength (only for thermally untreated wire):

Group I - I,

Group II - II.

(Changed edition, Amendment No. 5).

1.2. The wire is made with a diameter of:

from 0.16 to 10.00 mm - without coating;

from 0.20 to 6.00 mm - coated.

The diameter of the wire and the maximum deviations along it must correspond to those indicated in the table. .

Table 1

mm

Note: It is allowed to produce wire with two-sided maximum deviations. The tolerance field must correspond to that indicated in the table. .

(Changed edition, Amendment No. 5).

1.3. The ovality of the wire should not exceed half of the maximum deviations in diameter.

1.4. (Deleted, Change No. 5).

Examples of symbols

Wire with a diameter of 1.2 mm, heat-treated, high precision, light:

Wire 1 ,2 -P-ABOUT-WITH GOST 3282 -74

The same, with a diameter of 1.0 mm, heat-treated, normal accuracy, black:

Wire 1 ,0 -ABOUT-H GOST 3282 -74

The same, with a diameter of 1.2 mm, thermally untreated, class 2, increased accuracy, group II:

Wire 1 ,2 -P-2C- IIGOST 3282 -74 .

(Changed edition, Amendment No. 5, Amendment).

2. TECHNICAL REQUIREMENTS

Tensile strength, N/mm 2 (kgf/mm 2), for wire

Relative elongation d 100,%, not less, for heat-treated wire

thermally untreated

heat treated

uncoated

coated

uncoated

coated

From 0.16 to 0.45 incl.

St. 0.45 "1.00"

» 1.00 » 1.20 »

» 1.20 » 2.50 »

» 2.50 » 3.20 »

» 3.20 » 3.60 »

» 3.60 » 4.50 »

» 4.50 » 6.00 »

» 6.00 » 7.50 »

St. 8.00 to 10.00

2.4. The surface of the uncoated wire should be free of cracks, film, dullness and scale (with the exception of heat-treated black wire).

Local rippling, dents, marks, scratches are allowed on the surface of the wire, the depth of which should not be more than a quarter of the maximum deviation of the wire of normal accuracy.

(Changed edition, Amendment No. 5).

2.5. There should be no black spots on the surface of the galvanized wire that are not coated with zinc. Individual influxes of zinc are allowed, the value of which should not be more than half the maximum deviation from the actual diameter of the wire.

Inhomogeneity of the wire in color, white spots and shine, white coating are allowed if the wire passes the coating quality test in accordance with the requirements of paragraphs. , .

(Changed edition, Amendment No. 1, 5).

Ratio of core diameter to wire diameter

Number of turns, not less

1st class

2nd class

From 0.20 to 1.60 incl.

St. 1.60 » 2.50 »

» 2.50 » 6.00 »

Superficial dusty peeling of the zinc coating on wound samples of galvanized wire is allowed.

(Changed edition, Amendment No. 5).

Number of dives

Surface density of zinc, g/m 2, not less

Number of dives

Duration of each dive, s

Wire 1st class

Wire 2nd class

From 0.20 to 0.32 incl.

St. 0.32 "0.40"

» 0.40 » 0.50 »

» 0.50 » 0.63 »

» 0.63 » 0.80 »

St. 0.85 to 1.00 incl.

» 1.00 » 1.20 »

» 1.20 » 1.60 »

» 1.60 » 2.00 »

St. 2.80 to 3.60 incl.

» 3.60 » 5.50 »

» 5.50 » 6.00 »

2.9. The minimum weight of a coil or piece of wire on a reel must correspond to that indicated in the table. .

Table 4

Note: Uncoated wire coils with a weight 50% less than that indicated in the table are allowed. in an amount of no more than 10% of the mass of wire coils in a batch.

Wire coils weighing 500 - 1500 kg are allowed. Each skein should consist of one piece of wire.

(Changed edition, Amendment No. 3, 5).

3. ACCEPTANCE RULES

3.1. Wire is accepted in batches. The batch must consist of wire of the same diameter, the same manufacturing accuracy, one type of processing, one type of surface, one class and one group and must be documented in a quality document containing:

trademark or the name and trademark of the manufacturer;

wire symbol;

results of tests performed;

net weight of the batch.

(Changed edition, Amendment No. 5).

3.2. Surface quality testing is carried out on each skein or reel. The size check is carried out on 5% of the skeins or spools from the batch, but not less than on three skeins or spools.

3.3. To check the mechanical properties of the wire and the quality of the coating, 3% of the coils or coils are selected from the batch, but not less than two coils or three coils.

3.4. If unsatisfactory test results are obtained for at least one of the indicators, repeated tests are carried out on a double sample.

The results of repeated tests apply to the entire batch.

3.2 - 3.4. (Changed edition, Amendment No. 3).

4. TEST METHODS

4.1a. For each type of test, one sample is taken from each selected coil or coil of wire.

(Introduced additionally, Amendment No. 4).

4.1. External inspection of the wire is carried out visually.

If there is a disagreement in quality assessment, the defect on the surface of the wire is removed by stripping and its depth is determined by comparative measurement of the diameter in protected and unprotected places. It is possible to determine the depth of defects using any type of microscope.

(Changed edition, Amendment No. 2, 5).

Sample length per determination

From 0.20 to 1.50

St. 1.50 to 3.00

4.5. Wire coiling testing is carried out according to GOST 10447.

4.6. The surface density of zinc wire is determined by the gravimetric or volumetric gasmetric method, and the uniformity and continuity of the zinc coating is determined by the immersion method.

The weight method is used for particularly precise determinations and arbitration analyses.

The length of wire samples used to determine the mass of zinc coating by gravimetric or volumetric gasometric method is indicated in table. .

Samples may be cut into an arbitrary number of sections depending on the test conditions.

Removal of the zinc coating is carried out by completely immersing wire samples in the solution at ambient temperature until gas evolution stops.

A coil (coil) of wire is evaluated based on the arithmetic average of the test results of at least two samples. The test is carried out separately for each sample in the following order:

a) samples of wire are taken and the length specified for testing is measured. Samples are taken at least 0.5 m apart from each other;

b) degrease wire samples in alcohol, benzene or gasoline and wipe with a clean cloth;

c) dissolve the zinc coating, completely capturing the hydrogen released;

d) measure the volume of hydrogen released for each sample, sum it up and bring the arithmetic average to normal conditions (pressure 760 mm Hg, temperature 0 °C);

e) calculate the average surface density of zinc per 1 m2 of wire surface (m) in grams, according to the formula

Where V- arithmetic mean value of the volume of hydrogen under normal conditions, cm 3;

d- nominal diameter of the wire sample, mm;

l- sample length, mm.

Zinc is bled off in an aqueous solution of a mixture of acids:

sulfur according to GOST 4204 - 100 g/dm 3;

The continuity and uniformity of the zinc coating is controlled by immersing a sample of galvanized wire in a solution of copper sulfate, prepared by dissolving one part by weight of dry crystalline copper sulfate according to GOST 4165 in five parts by weight of distilled water and neutralized with an excess of freshly precipitated copper oxide hydrate. After neutralization, the solution must be filtered. The density of the neutralized filtered solution should be 1.114 - 1.116 g/cm3.

The temperature of the copper sulfate solution during the test should be (18 ± 2) °C.

The test procedure is as follows:

a) samples of wire 150 mm long are taken and washed with alcohol, gasoline or benzene. If the samples are washed with gasoline or benzene, then they are additionally washed with distilled water and wiped until moisture is removed;

b) immerse the samples in a solution of copper sulfate to a depth of at least 100 mm. The samples must be immersed for exactly 1 min. If a dive is set for 30 s, then it should be carried out after dives of 1 min. After each immersion in the solution, the samples are immediately rinsed with distilled water and wiped with a clean cloth. The number of samples simultaneously immersed in the solution should not exceed 6.

Wire samples should be in a solution of copper sulfate in a stationary state, without contacting each other or the walls of the vessel.

The number of wire samples to be tested in the same 200 ml solution of copper sulfate is given below.

Wire diameter, mm Number of samples, pcs.

From 0.20 to 0.50................................................. ..... 100

St. 0.50 » 1.00.................................... ........ 40

» 1.00 » 1.40............................................ ....... 20

» 1.40 » 2.00............................................. ....... 12

» 2.00 » 3.60............................................ ....... 6

» 3.60 » 6.00.................................... ....... 4

If, after a specified number of immersions in the solution, there are areas on the surface of the wire sample covered with copper that does not come off when wiping the sample with cotton wool or a clean cloth, then the sample is considered to have failed the test. Samples are viewed with the naked eye.

Samples are considered to have passed the test when:

a) redness of the surface of the test wire sample in a section located at a distance of 10 mm from the level of the solution and at a distance of 20 mm from the lower end of the sample immersed in the solution;

b) a brown tint and reddening of a dotted nature, disappearing or not increasing in size and brightness with additional immersion of the sample in a solution of copper sulfate for 1 - 2 s.

(Changed edition, Amendment No. 3).

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

5.1. Each skein must be firmly tied with heat-treated wire in at least three places evenly spaced around the circumference of the skein.

The ends of the wire in the coil should be neatly laid and easily found.

Skeins of wire with a diameter of less than 0.8 mm can be tied with the free end of the same skein.

The upper end of the piece of wire on the reel should be secured with a loop or on the cheek of the reel.

(Changed edition, Amendment No. 5).

5.2. Coils of wire from the same batch can be tied into coils.

(Changed edition, Amendment No. 1).

5.3. The wire is not coated with lubricant. At the consumer's request, the wire must be coated with a thin layer of preservative oil type NG-203 grades A, B according to OST 38.01436, K17 according to GOST 10877 , ZhKB and ZhKB-1 according to regulatory and technical documentation or industrial oil grades I-12A, I-20A, I-25A, I-30A, I-40A, I-50A according GOST 20799 with the addition of KP additives GOST 23639 (15 - 20%) or AKOR-1 (15 - 25%) according to GOST 15171.

It is allowed to use other types of preservative oils that protect the wire from corrosion.

5.4. Rolls of wire with a diameter of 0.50 mm or less should be wrapped in a layer of paper and packed in wooden boxes such as II according to GOST 18617, type II-I according to GOST 16536 or other regulatory and technical documentation.

Rolls of wire with a diameter of 0.5 - 1.00 mm should be wrapped in a layer of paper, then in a layer of polymer film or non-woven materials, or chemical fiber fabric.

It is allowed to pack the wire in metal box pallets in accordance with OST 14-43 or other regulatory and technical documentation or two-ton wooden boxes in accordance with GOST 18617, lined with packaging paper on the inside.

When mechanized packaging, a coil of wire must be wrapped in a layer of paper in accordance with GOST 10396 or KMV-170 paper, or other crepe paper with equivalent protective properties, or polymer film with the packaging secured.

The following are used as packaging materials:

waxed paper in accordance with GOST 9569 (the use of two-layer paper in accordance with GOST 8828 or other paper that provides corrosion protection is allowed);

polymer film according to GOST 10354, GOST 16272 or other polymer film;

non-woven materials (packaged canvas stitched fabric or glued fabric), fabrics made from chemical fibers according to regulatory and technical documentation, packaging fabric for technical purposes according to