How many meters are there in 1 kg of barbed wire?

Barbed wire GOST 285-69

The Granza fencing plant offers to purchase GOST 285-69 barbed wire for fencing systems at a price of 139 rubles per kilogram.

The price per linear meter is determined based on the order parameters.

Barbed wire as a fencing barrier is widely used in organizations and enterprises with enhanced security.

Fence projects

Types of barbed wire

There are 2 types of barbed wire:

1. AKL – reinforced razor tape. Galvanized tape 0.5 mm thick (±0.05), with symmetrical double-edged spikes, is crimped around galvanized steel rope wire. Tooth pitch 35 mm.
2. ASKL – reinforced twisted razor tape. Galvanized tape 0.5 mm (±0.05) thick, with symmetrical double-edged spikes, is twisted around galvanized steel rope wire. Tooth pitch 35 mm.

AKL and ASKL are used for the production of EGOZA barbed wire, as well as for the production of a flat safety barrier (FBB) and a spiral safety barrier (SBB).

Single core barbed wire

Type Name Parameters Price, rubles with VAT per kg*

Barbed wire KTs 1 kg	GOST 285-69, galvanized, 1 kg = 11 meters +/- 10%	139

Spiral Safety Barrier

Type Name Parameters Price, rubles including VAT*

SBB AKL 500/40/3	GOST 9850-72, spiral ø 500 mm, 40 turns, fenced perimeter 8-10 m, fastening with 3 rivets	Request full price list Calculate cost Request conditions for dealer
SBB AKL 500/62/5	GOST 9850-72, spiral ø 500 mm, 62 turns, fenced perimeter 10 m, fastening with 5 rivets
SBB AKL 600/40/3	GOST 9850-72, spiral ø 600 mm, 40 turns, fenced perimeter 8-10 m, fastening with 3 rivets
SBB AKL 600/62/5	GOST 9850-72, spiral ø 600 mm, 62 turns, fenced perimeter 10 m, fastening with 5 rivets

Flat safety barrier

Type Name Parameters Price, rubles including VAT*

PBB AKL 500/10	GOST 9850-72, spiral ø 500 mm, fenced perimeter 10 m	Request full price list Calculate cost Request conditions for dealer
PBB AKL 600/10	GOST 9850-72, spiral ø 600 mm, fenced perimeter 10 m

Accessories for SBB/PBB

Type Name Parameters Price, rubles including VAT*

Tension string 1 meter	ø 2.5 mm, galvanized, GOST 9850-72	7,5
Mounting bracket 1 pc.	50x10x1.2 mm, galvanized	3,5

Materials for production

The following materials are used in the production of barbed wire:

• galvanized steel strip GOST R 52246-04;
• galvanized wire without hot water, GOST 9850-72 or GOST 3282-74;
• galvanized metal for fastening brackets.

Source: https://granza.su/produktsiya/kolyuchaya-provoloka.html

Knitting wire: questions and answers

Knitting wire as a building material is rarely given much importance. But in the construction of monolithic reinforced concrete structures it plays an important role. The main purposes of these products are to bind reinforcing elements into a strong and reliable frame and fix fasteners before welding.

A bonded reinforcement cage, for example, for a foundation, is not only cheaper, but also often more reliable compared to a welded structure.

Other areas of application of knitting wire are the production of steel ropes, masonry mesh, chain-link, barbed wire, securing cargo during transportation, installation and packaging work.

What kind of binding wire is needed for reinforcement

Knitting wire belongs to the hardware category of steel building materials. Its production uses low-carbon steel with a carbon content of 0.08 to 0.25%. The workpiece is a wire rod, the final product is obtained by cold drawing - pulling under high pressure through a hole of a smaller diameter.

To impart the required properties, the knitting wire is annealed - heated to a high temperature and then slowly cooled. During this technological event, the crystalline structure of the product, deformed during pressure treatment, is restored. This significantly reduces internal stresses in the metal.

Heat-treated binding wire, made of low-carbon steel, has excellent performance characteristics:

• high ductility combined with sufficient mechanical strength;
• no cracks due to slow natural cooling;
• low cost;
• The products are easy to use, easy to bend, knit, and fixed in a given position.

Attention! Wire that has not undergone heat treatment does not have the required properties and is not recommended for tying reinforcement. Unannealed wire bends heavily and breaks and breaks when tying a knot.

Which knitting wire is better

Knitting wire is produced annealed without coating, galvanized, with a polymer coating.

There are two types of annealing – dark and light.

• During dark annealing, which is carried out in the presence of oxygen, the binding wire acquires a dark color due to the formation of scale.

Advice! The presence of scale does not affect the mechanical characteristics, but it does get your hands very dirty. It is recommended to work with it wearing gloves.

• Bright annealing is carried out in special bell-type furnaces in the presence of an inert gas. Therefore, the surface of such wire is cleaner, and the price, naturally, is higher.

If you want to increase the durability of the frame of a reinforced concrete structure, for example, a strip foundation, purchase galvanized binding wire. Galvanizing is used for binding wire. The protective coating provides increased corrosion resistance of the product. According to reviews on the forums, it is very easy to use.

In the marking of the wire, the presence of heat treatment is indicated using the letter “O”, light annealing – “C”, dark annealing – “H”. In zinc-coated wire, the coating class is indicated - “1C” or “2C”. Products of class “2C” have a higher density of zinc coating.

Knitting wire is supplied in coils, skeins, and rosettes. Manufacturers also offer products for knitting frames in the form of wire segments with rings along the edges. Packages of cut wire can have a mass of 0.5-10.0 kg.

What diameter of binding wire is better?

The diameter of the binding wire is determined by the diameter of the reinforcement. In low-rise construction, 8-12 mm reinforcement is used, for which wire with a cross-section of 1.2-1.4 mm is considered the most suitable. Products with a diameter of 1.0 mm are too weak and often break off. Larger diameter wire is difficult to work with.

How much wire will be needed for reinforcement?

To determine the amount of binding wire, they are determined with a reinforcement diagram. It is difficult to accurately carry out such calculations, and this is not required, since the price of these products is low.

At the junction of two reinforcing rods with a diameter of 10 mm, pieces of wire approximately 25 cm long will be required; for knots of three rods, the length of the segment is approximately 50 cm. As the diameter of the reinforcement increases, the length of the segment increases. More precisely, the wire consumption per connecting point is determined experimentally. A completely simplified version - the number of all connecting nodes is multiplied by 0.5 and the required wire footage is obtained.

Attention! When purchasing, it is recommended to double the calculated amount of wire. Such a reserve is necessary, since during the knitting process some sections may tear or get lost. The size of the purchase may be less than stated.

The table below will help you buy the correct amount of binding wire. From it you will find out how many meters of knitting wire are in a kilogram, and the reverse information - how many meters are in a kilogram.

Table of the ratio of the mass and length of the knitting wire of the most common diameters in everyday life 

Diameter, mm	Weight 1 m, kg	Length of 1 kg wire, m	Weight of uncoated wire on a reel or coil, not less than, kg	Weight of galvanized wire on a reel or coil, not less than, kg
0,6	0,00222	450,45	5,0	0,6
0,8	0,00395	253,17	5,0	0,6
1,0	0,00617	162,00	5,0	0,6
1,2	0,00888	112,6	8,0	2,0
1,4	0,0121	82,6	8,0	2,0
1,6	0,0153	65,4	8,0	2,0
1,8	0,0200	50,0	8,0	2,0
2,0	0,0247	40,5	8,0	2,0

Note - the minimum weight of uncoated and galvanized knitting wire in coils and coils is in accordance with GOST 3282.

When purchasing wire in a coil, to determine its length, divide the mass of the coil by the mass of 1 m of the product of the diameter you need. We take the data from the table. For example, you bought a coil of wire with a diameter of 1.2 mm, its weight is 50 kg. We make the following calculations - 50 kg/0.00888 kg = 5630 m. Using the table, you can make these calculations differently. 1 kg of wire with a diameter of 1.2 mm contains 112.6 m, which means that 50 kg contains 112.6x50 = 5630 m.

Knit or weld reinforcement

When comparing a welded joint and a knitted knot, at first glance, the welded seam is more reliable. Is it so? Let's look at what problems a weld poses:

• Welding degrades the characteristics of the metal in the heating zone. Therefore, during operation, either the seam itself or the metal exposed to high temperatures may burst.
• When pouring a concrete mixture according to the technology, it is supposed to be subjected to vibration, which negatively affects the strength of the seam.
• Welding work requires the involvement of a specialist welder.

Therefore, in monolithic construction, preference is often given to a cheaper method of joining reinforcement - connecting it using a tying wire and a hook.

DIY hook for fittings

A hook for tying reinforcement can be made independently from the reinforcement itself or simply a steel rod 6-8 mm thick and a bearing. The metal rod is bent into a hook, which allows you to conveniently grab the wire. A bearing is mounted in the handle, allowing the hook to rotate quickly.

You can buy a hook for fittings - with a straight or curved handle, with different angles of bending of the handle, shape and size of the hook. The optimal instrument design for each performer can only be determined experimentally.

Rebar hook, semi-automatic and automatic

You can purchase a semi-automatic or automatic hook model in the store.

• Semi-automatic hooks have a spiral built into the handle. This hook does not require rotation. If you pull the handle towards you, the tip begins to rotate. This tool is more expensive than a manual one; purchasing it makes sense when performing large-scale work.
• You can make a semi-automatic version of the hook yourself using a screwdriver and a metal rod with a curved end. The rod is secured in a holder, and work is carried out at very low speeds.
• An automatic hook for tying reinforcement is called a gun. Its productivity is a node per second. The wire does not need to be cut into measured pieces. It is simply tucked into the tool, and he himself ties the knots and cuts off the excess. The rebar tying gun does not require a power source to operate as it runs on a battery. Such a tool has one significant drawback - its high cost, which pays off with significant volumes of reinforcement work.

Source: https://www.navigator-beton.ru/articles/vyazalnaya-provoloka.html