Impact-resistant double-glazed windows: safety and impact-resistant glass

Armored bulletproof windows and other structures with bulletproof glass provide reliable protection to thousands of employees working in Moscow institutions where money, jewelry, securities are stored, items of historical value, antiques and luxury goods are displayed - that is, in places for which there is a real or potential threat of armed attack. Bullet-resistant (armored) glass and frames will protect both from through penetration by bullets and from fragments when hit by bullets of various types of weapons - from a pistol to a sniper rifle with an armor-piercing incendiary cartridge. It is advisable to equip booths with such glazing in courtrooms, workplaces of personnel of banks, internal affairs bodies, currency exchange offices, gas stations, etc. Protective bulletproof booths are installed at the approaches and entrances to protected objects. Bullet-resistant glass is also installed on vehicles with armor protection. The protection class is selected in accordance with the requirements established in regulatory documents for a specific vehicle.

The production of bulletproof glass for bulletproof translucent structures for various purposes is one of the key activities of the FOTOTECH company. From us you can order the production of bulletproof structures according to individual requirements or buy bulletproof glass of standard sizes with standard protective characteristics.

Safety glass and double glazed windows

A double-glazed window is a structure made of several glasses.
To achieve a high degree of security, not ordinary glass, but special protective glass is installed in the double-glazed window. There are many types of protective glass: some are strengthened by gluing a special film, others by tempering. Regardless of the type of manufacture, the “protective glass” in a double-glazed window looks approximately the same. It is impossible to distinguish protective glass from ordinary glass, except in cases where it is marked - an indelible “label” indicating its degree of protection

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Favorable prices for bulletproof glass

The price of FOTOTECH armored glass depends on the protection class, design dimensions and order volume. At the same time, you can always be sure: the cost of our bulletproof structures of any complexity will always be competitive, because We offer products of our own design and production. As a developer and manufacturer, we do not set markups for intermediary services or rental - you can buy from us both a ready-made design and separately bullet-resistant glass, and this will always be a product at the best price directly from the manufacturer.

For dealers, partners and regular customers there is a loyalty program with discounts for small and large wholesale. Delivery is prompt, to any region of the Russian Federation and CIS countries on favorable and convenient terms for the customer.

Place an order through the website services, come to the company’s office or call our specialist to the site for measurements by phone.

Safety glass in plastic windows

In the production of safe, burglary-resistant plastic windows, impact-resistant glass and double-glazed windows are most often used. Glass with higher degrees of protection - bulletproof and armored - is classified as special-purpose glass and is used in conjunction with an all-steel frame.

Bulletproof glass

established when there is a possible threat of an armed attack on staff or visitors.

Armored and break-resistant glass

are installed at objects without centralized security that have material assets, for example, in banks, in museums. If there is security, impact-resistant glass of class A1-A3 is used.

Class 1: Safety glass during operation

Glass, when broken, does not form large fragments (tempered safety glass), or the fragments are held by a polymer film (laminated safety glass) is called safe to handle. These types of glass include triplex glass (laminated glass with a PVB film between two sheets of glass) and tempered glass.

In an effort to achieve effective protection without sharp (dangerous) fragments, please note that safety glass does not guarantee protection against breakage, it only provides a higher degree of glass resistance to physical impacts.

Tests

Such glass is tested for strength in one of the following ways: by blows with a bag of soft steel scrap (shot) weighing 45 kg (SM class); blows with a solid steel hollow pear weighing 5-10 kg and with a diameter of 240 mm (ST class).

Safety glass resistance classes

Glass classConstruction typeImpact resistance
SM1Heat-strengthened glass less than 4 mm45 kg drop from 20 cm height
SM2Heat-strengthened glass 4 mm Laminated glass triplex 33.145 kg drop from 45 cm height
SM3Heat-strengthened glass 5 mm or more Tempered glass 4 mm Laminated glass triplex 44.145 kg drop from 120 cm height
SM4Tempered glass 5 mm (or more) Laminated glass triplex 44.2, 55.2, 66.2Drop of 45 kg from a height of 200 cm

Determined according to: GOST 30698-2014 Tempered glass. Technical specifications GOST R 54171-2010 Multilayer glass. Specifications

Class 2: Impact-resistant glass

Impact-resistant glass includes glass with a thick polymer film, for example 4 mm glass with a protective film 300 microns thick. Such glass can withstand repeated impacts not only from a soft, but also from a hard body.

Tests

Safety glass is tested by hitting a free-falling steel ball weighing 4 kg from various heights. Glass is assigned an impact resistance class based on the degree of protection against impacts of varying strengths.

Resistance classes of impact-resistant glass

Glass classConstruction typeImpact resistance
P1A (K4)Glass with polymer film 200 microns Triplex 44.2 / 4(0.76)43x drop of a steel ball from a height of 150 cm
P2A (A1)Glass with polymer film 300 microns Triplex 44.4 / 4(1.14)43x drop of a steel ball from a height of 300 cm
P3A (A2)Glass with polymer film 400 microns Triplex 44.5 / 4(1.52)43x drop of a steel ball from a height of 600 cm
P4A (A3)Glass with polymer film 600 microns Triplex 66.5 / 6(1.52)63x drop of a steel ball from a height of 900 cm

Determined according to: GOST R 54171-2010 Multilayer glass. Technical specifications GOST 32563-2013 Glass with polymer films. Technical specifications GOST R 51136-2008 Multilayer protective glass. General technical conditions

Safety impact-resistant glass of class P1A (K4) corresponds to class SB2(D) (anti-fragmentation - explosion-proof glazing).

Class 3: Safety glass, resistant to penetration

Break-resistant glass protects against penetration and is called armored glass.

Tests

Tests of this type of protective glass are carried out by blows with a butt and an ax blade. Depending on the number of impacts the glass can withstand, it is assigned a protection class: B-1, B-2, B-3.

Classes of penetration-resistant armored glass

Glass classConstruction typeImpact resistance
R6V (B1)Laminated glass 4(1.14)4(1.14)4(1.14)430-50 beats
R7V (B2)Laminated glass 4(1.14)4(1.14)4(1.14)4 6(0.76)6(0.76)6(0.76)651-70 beats
R8V (B3)Laminated glass 4(0.76)4(0.76)4(0.76) 4(0.76)4(0.76)4 6(1.14)4(1.14)6(1.14) )4Over 71 hits

Determined according to: GOST R 54171-2010 Multilayer glass. Technical specifications GOST R 51136-2008 Multilayer protective glass. General technical conditions

In the case of using impact-resistant burglar-resistant glass as part of a double-glazed window, it is recommended to place laminated glass on the inside.

Go to the selection of plastic windows

Shock-resistant glass

The use of polymer impact-resistant protective films is intended to increase the protection of the room from penetration through glazing and to protect people from fragments when glass breaks. Glazing with impact-resistant protective films is usually installed in window and display openings of commercial premises (shops, shopping and office centers, etc.).

Protection class A1

Used to protect against glass fragments and withstand repeated impacts from blunt objects. It is mainly used for glazing the facades of commercial and office buildings (shops, bars, offices, industrial premises) to protect people and property from accidental damage from glass fragments. Withstands destruction energy of 141 J; Impact resistance up to 78 kg.

Protection class A2

Protection class A2 approximately corresponds to a car windshield or triplex glass. A2 is recommended for use in glazing private houses and cottages to prevent break-ins and thefts. This protection class is also recommended for installation of shop windows and residential apartment windows located on the first floors of premises. Withstands destruction energy of 262 J; Impact resistance up to 135 kg.

Protection class A3

Installed on objects with expensive material assets, such as cash registers of commercial organizations, jewelry and weapons display cases, etc. It is also actively in demand for glazing private houses and cottages to prevent break-ins and thefts. Withstands destruction energy of 382 J; Impact resistance up to 182 kg.

For comparison, the number of blows with a fire ax required to punch a hole large enough in glass for an average-sized person to fit through:
Classification of impact-resistant glass

Protection classNumber of hitsTime spent
A1from 25 to 35 beats1-3 minutes
A2from 45 to 55 beats3-7 minutes
A365 to 75 beats5-10 minutes

Installation of bulletproof glass

Inside commercial premises and institutions, bullet-resistant glass is installed in combination with protective panels at a height of at least 2 m from the floor. The gap to the ceiling is covered with metal panels or grilles. External windows are protected by glass of the same class as indoors. A steel profile with reinforcing elements is used for the frame.

The thickness of bulletproof glass, dimensions, type of component sheets and intermediate layers, edge processing and end sealing are specified in the manufacturing contract. Light transmission characteristics, as well as fire and frost resistance, are agreed upon with the client.

Protection classes

Multilayer bulletproof glass provides comprehensive protection. It is safe for others even when dropped from a height of 190–2000 mm, withstands repeated impacts from falling objects, and is resistant to directed impact from a stone, axe, hammer, or crowbar.

Products are assigned basic and special classes according to the degree of protection against bullets:

  • C1 (special) - resistance to penetration by an 18.5 mm cartridge with a lead core from a 12-gauge hunting rifle from a distance of up to 5 m.
  • Br1 - protection against damage by a 9 mm APS pistol with 9 x 18 mm cartridges (with a Pst bullet with a steel core) from a distance of up to 5 m.
  • Br2 - resistance to penetration by a SR-1 9 mm pistol with a 9 x 21 mm cartridge (with a P bullet with a lead core) from a distance of up to 5 m.
  • Br3 - protects against shots from a 9 mm PYa pistol with 9 x 19 mm cartridges (with a Pst bullet with a steel core) from a distance of up to 5 m.
  • Br4 - protection against an AK74 assault rifle with 5.45 x 39 mm cartridges (with a PP bullet with a heat-strengthened steel core) from a distance of up to 10 m.
  • Br4 - protection against an AKM assault rifle with 7.62 x 39 mm cartridges (with a PS bullet with a heat-strengthened steel core) from a distance of up to 10 m.
  • Br5 - protection against an SVD rifle with 7.62 x 54 mm cartridges (with a PP bullet with a heat-strengthened steel core) from a distance of up to 10 m.
  • Br5 - protection against an SVD rifle with 7.62 x 54 mm cartridges (with a B-32 bullet with a heat-strengthened steel core) from a distance of up to 10 m.
  • Br6 - protection against the OSV-96 rifle with 12.7 x 108 mm cartridges (with a B-32 bullet with a heat-strengthened steel core) from a distance of up to 5 m.

Scope of application

Bulletproof glass is installed at all facilities where there is a threat of armed attack. The protection class is chosen taking into account the risks and crime situation. Bulletproof glass protects the following objects:

  • banks, shopping centers and other places for issuing or storing money;
  • jewelry store windows and currency exchange offices;
  • workplaces for cashiers, police duty officers, and security guards.

Non-splintering multilayer structures are used in facilities and equipment in cases where there are people in close proximity. In other situations, tempered glass with a thickness of 10 mm or more can serve as protection against bullets.

We develop and manufacture protective double-glazed windows and partitions for residential, commercial, and government facilities. Two- and three-chamber bullet-resistant bags are produced in various combinations with ordinary, frost-resistant, sound-insulating glass to obtain improved performance characteristics.

For transport, curved (bent) glass with high optical properties is produced. Ideal for installation on armored vehicles. Provide safety and increased comfort of the interior space.

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