Modern fire safety systems are characterized by a certain complexity. So, when an object is put into operation, they try to provide it with several fire-fighting elements in order to minimize damage in the event of a fire and its further development into a fire.

The most versatile elements of complex fire protection systems are fire curtains and curtains. These are special fire-resistant barriers, the task of which is to localize the flame, and often prevent the spread of smoke and other combustion products throughout the territory (smoke-tight fire curtains and curtains, curtains and screens).

Structurally, fire curtains and veils are a canvas, which is mounted on a shaft on one side, and on the other side there is a heavy cutting bar. The canvas moves along the guides, which can be fixed on the sides of the opening, or on any other flat surface. Part of the design of fire curtains and veils, curtains and screens is a protective box, which is mounted on top of the shaft and protects the shaft, as well as the canvas laid on it from physical damage, and also gives the whole structure an aesthetic appearance.

One of the important elements that fire curtains and curtains have is a rotating shaft drive, on which the fabric is laid. As a rule, the drive is made shaft or tubular with a reversible motor, and it can be connected both to a regular network and to a network with low voltage, up to 24 volts.

Fire resistance of fire curtains and curtains.

Fire curtains and veils, curtains and screens, as well as infills of fire-resistant barriers - gates, doors, windows, hatches, valves (see more about the classification of fire-resistant barriers and infills of fire-resistant barriers in this material) Federal Law 123-FZ "Technical Regulations on Requirements fire safety” regulates the limit states that determine the fire resistance limit of a fire barrier / filling of a fire barrier. In terms of fire curtains and curtains, curtains and screens, 123-FZ "Technical Regulations on Fire Safety Requirements" establishes a fire resistance limit:

• for fire-resistant curtains and veils, curtains and screens, as well as doors (excluding doors with more than 25% glazing and smoke and gas-tight doors), gates, hatches, valves due to loss of integrity and loss of heat-insulating ability due to reaching limiting (critical) temperature values ​​on the surface - EI 15, EI 30, EI 60 depending on the type;

• for fire-resistant smoke and gas-tight curtains and curtains, curtains and screens for loss of integrity, loss of heat-insulating ability due to reaching limit (critical) temperature values ​​​​on the surface and / or limit (critical) values ​​\u200b\u200bof heat flow at a regulated distance from the structure / barrier / barrier filling and smoke and gas tightness - EIWS 15, EIWS 30, EIWS 60 depending on the type.

Parameters EI or EIWS determine the time after which one of the limit states of fire resistance failure is possible. So, for example, the Latin letter E denotes the loss of the integrity of the fire barrier / filling the fire barrier, while E 60 tells us about the time after which this can happen. The Latin letter I denotes the loss of heat-insulating ability due to the achievement of limiting (critical) temperature values ​​​​on the surface, the letter W - the loss of heat-insulating ability due to the achievement of limiting (critical) values ​​​​of heat flow at a regulated distance from the structure / barrier / barrier filling, the letter S - loss of smoke and gas tightness, and the value of EIWS 60 indicates that the heat-insulating ability of the curtains and smoke and gas tightness can be violated after 60 minutes according to one of the limit states.

Fire curtains and veils have high fire resistance because a special material is used in the manufacture of the fabric, usually glass or silica fiber, due to which the fabric not only has fire resistance regulated by 123-FZ, but also remains flexible and at the same time durable.

Fire curtains and curtains can be used to solve the widest range of fire engineering tasks - to protect openings in which windows and doors made of materials that support combustion are installed, to protect emergency exits, stairs, platforms, etc. Due to the articulation of the canvases, the design forms a kind a cube that allows you to completely localize a particular area of ​​​​the territory, as well as protect it from the spread of smoke and other toxic substances harmful to human life and health.

Agree that ensuring the safety of people in any building or premises, regardless of its purpose (residential, commercial, public or industrial), is a priority. And to solve it, new building and finishing materials are constantly being developed, as well as technologies and methods to combat the emerging danger. This fully applies to fires that occur in houses and premises for a variety of reasons.

Today, there are many ways for the timely detection of a fire, its localization and extinguishing - these are special alarm and fire extinguishing systems, fire doors and fire curtains that have recently appeared.

Design

Fire-resistant curtains are a product made of a fabric of a special structure, which acts as a barrier to flame and smoke in case of fire. Thanks to it, people in the fire zone have enough time to evacuate. Structurally, fire curtains are very similar to roll models. The main element is a box made of galvanized steel, in which the shaft and the motor (or mechanism) responsible for lowering / raising the web are located. Auxiliary elements are guide rails located on both sides.

Flame retardant fabric

For the manufacture of fire curtains, a specially designed fabric is used - fiberglass that can withstand high temperatures. A reinforcing mesh of galvanized steel wire is woven into the textile. This reinforced fabric is additionally impregnated with innovative composite substances capable of expanding at temperatures above +160°C. This effect eliminates the risk of fire spreading and expanding the fire zone. After compaction under the action of high temperature, the thickness of the web can reach a centimeter, and the material itself can withstand temperatures up to +1100 °C.

Fire curtains made of this fabric are increasingly being used for both commercial, public and industrial facilities, as well as residential buildings. The maximum width of the opening that fireproof curtains can block is 30 meters.

According to fire safety standards, these products are recognized as real protection against the effects of an open flame.

Varieties

Fire-resistant curtains according to the method of action in case of fire are conditionally divided into two types:

• The first is the curtains, which, when a fire is detected in the room, automatically block the entrance (sometimes the window) opening into it, preventing the fire and combustion products from spreading further and preventing the flow of fresh air.
• The second - simultaneously with the lowering of the curtains, the irrigation system is turned on, creating an additional barrier in the form of a water curtain.

Our offer

Our company offers to buy high-quality fire curtains, which are supplied directly from the manufacturer in the sizes you need for your purposes. The prices for these products depend both on the size and design of the curtains, and on the structure and properties of the material of their fabric.

1. Protective box

2. Winding shaft

3. Side guides

4. Fireproof cloth

5. Tubular drive

6. Movable bar

7. Curtain control board

DESIGN FEATURES OF THE METAL STRUCTURE OF THE CURTAIN.

CALCULATION OF THE LOAD ACTING ON THE BEARING STRUCTURE:

Inside the protective box there is a shaft with a tubular drive, on which the curtain fabric is wound.

There are 7 types of steel shafts used in the construction of fire curtains:

octagonal (8-sided) RT 60 * 0.8, specific gravity = 1.36 kg / r.m.

octagonal (8-sided) RT 70 * 1.2, specific gravity = 2.5 kg / r.m.

octagonal (8-sided) RT 102 * 2.5, specific gravity = 6.5 kg / r.m.

round pipe with an outer diameter of 102 mm and a wall thickness of 3.0 mm, specific gravity = 7.32 kg / m.p.

round pipe with an outer diameter of 108 mm and a wall thickness of 4.0 mm, specific gravity = 10.4 kg / m.p.

round pipe with an outer diameter of 133 mm and a wall thickness of 4.0 mm, specific gravity = 12.73 kg / m.p.

round pipe with an outer diameter of 159 mm and a wall thickness of 4.5 mm, specific gravity = 17.15 kg / m.p.

The selection of a suitable type of shaft is influenced by the width of the fire barrier web and its weight with the profile bar.

AVAILABLE DRIVES:

If the curtains are heavy, axial drives are used.

The lower part of the fire-retardant curtain has a profile strip that provides stretching of the canvas and its tight fit to the floor after lowering.

• The specific weight of the profile strip is 4.5 kg/m. P.

The production of the metal structure of the fire retardant barrier can be carried out from galvanized, stainless steel, it is also possible to paint in any color scheme according to the RAL catalog. The main component of fire-prevention curtains - a cloth.

CLAD CHARACTERISTICS.

The production of silica fabric is preceded by heat treatment to ensure low thermal conductivity and resistance to temperatures above 1000°C. It is possible to manufacture a fire hole in the fire curtain canvas.

A fire barrier in its normal state does not take up much space and does not spoil the design of the room, because. the canvas is wound on the shaft and does not attract attention. However, in the event of a fire and a signal from the APS, the fire curtains quickly lower, creating a fire and combustion products for further spread.

Fireproof curtains are lowered at a speed of 0.08 m/s or more.

In the event of a power outage, the fire barrier is powered from a backup source. Please note that a scheduled inspection of the equipment should be carried out by qualified service personnel every 3 months.

Curtains are guaranteed for 12 months after installation and commissioning, provided that regular maintenance is carried out by competent specialists.

STANDARD DIMENSIONS OF BOXES AND GUIDES.

METHODS OF MOUNTING CURTAINS.

Fire curtains (fireproof fire curtains, barriers, curtains, smoke curtains and barriers) are used as effective localization of a source of ignition or protection from high temperatures and combustion products of ways and exits for evacuating people, important objects, crowded places, equipment, vehicles, etc. e. In the European Union, the fire resistance and smoke protection properties of fire-resistant smoke barriers (curtains, curtains) are regulated by international standards EN 12101, EN1634, developed by the European subcommittee SC 1 (smokean dheatcontroll systems) as part of the general technical committee TC 191 (fixed fire fighting systems), and also the norms of the technical regulation DIN18095 of the German Institute for Standardization. In our country, the norms and requirements for fire-resistant barriers and fillings of fire-resistant barriers, including fire curtains, curtains and screens of types 1, 2, 3 in terms of fire resistance, water curtains and smoke and gas-tight curtains and screens of types 1, 2, 3 in terms of fire resistance, are established by Federal Law 123-FZ "Technical Regulations on Fire Safety Requirements" (more about the norms and requirements of 123-FZ "Technical Regulations on Fire Safety Requirements" in this material), and approved on March 10, 2009 by order of the Government of the Russian Federation N 304-r "List national standards containing the rules and methods of research (testing) and measurements, including the rules for sampling, necessary for the application and execution of the Federal Law Technical Regulations on Fire Safety Requirements and Conformity Assessment" defines a package of legal acts governing certification tests fire barriers / fire-resistant fillings barriers and inspections.

Unlike fire gates and doors, for which the technical regulation 123-FZ establishes fire resistance limits:

• EI 15, EI 30, EI 60 depending on the type for doors (excluding doors with more than 25% glazing and smoke and gas tight doors;
• EIW 15, EIW 30, EIW 60 depending on the type for doors with glazing with a total area of ​​more than 25%;
• EIS 15, EIS 30, EIS 60 depending on the type for smoke and gas tight doors;
• EIWS 15, EIWS 30, EIWS 60 depending on the type for smoke and gas tight doors with more than 25% glazing,

Fire curtains and screens are certified for fire resistance:

• for loss of integrity and loss of heat-insulating ability due to the achievement of limiting (critical) temperature values ​​on the surface, or EI 15, EI 30, EI 60, depending on the type of fire curtains / screens;
• for loss of integrity, loss of heat-insulating ability due to the achievement of limit (critical) temperature values ​​​​on the surface and / or limit (critical) values ​​\u200b\u200bof heat flux at a regulated distance from the structure / barrier / barrier filling and smoke and gas tightness, or EIWS 15, EIWS 30, EIWS 60 for smoke and gas tight fire curtains / screens, depending on their type.

In the EU, the fire resistance limit of fire curtains in terms of loss of integrity and loss of heat-insulating ability due to the achievement of limiting (critical) temperature values ​​​​on the surface, some manufacturers raise up to EI 120 (T120 according to DIN standards) and such significant limits for maintaining integrity and maintaining heat-shielding properties are achieved through the use of as the main material of glass or silica fibers, often reinforced with thin stainless steel filaments. Additionally, the woven fabric of fire curtains is treated with special fire-resistant compounds, the recipe of which is kept secret by the manufacturers of fire barriers.

The scope of fire and smoke protection curtains is very large due to the manufacturability and flexibility of the material, as well as the possibility of integrating the structure into the opening from any material and the execution of complex articulations of canvases at different angles.

The main purpose of fire curtains is to block the transfer of heat from the source of ignition by radiation and convection, as well as combustion products, the release of which, even in small fires, can be significant. So, a typical computer printer emits up to 2,000 m?/hour of toxic smoke in case of fire, a medium-sized refrigeration unit - 6,000 m?/hour, an ordinary clothes hanger - 4,000 m?/hour, 10 kg of wood in products - 8,000 m?/ hour, similar in weight amount of foamed materials - 20.000 m? / hour, passenger car - 80 000-100 000 m? / hour, etc. All fire curtains are used in combination with natural and forced smoke exhaust systems and devices, the standardization of which is carried out in European and German legislative acts E DIN prEN 12101, VdS CEA 4020, VDI 3564, DIN 18232, as well as in the Russian 123-FZ "Technical regulation on fire safety requirements.

Structurally, fire curtains are a canvas wound on a shaft with a heavy cutting bar at the end. The edges of the canvas are made in the form of pockets, into which the guide rods of the side tires are inserted. To improve sliding, the inner surface of the pockets is coated with polyurethane (or other) coating. Rolled-up curtain shaft is closed by a galvanized sheet steel body and placed under the ceiling or on the upper horizontal of the wall opening. Almost all fire curtains have a shaft drive with a reversible motor operating from mains or low voltage (24 volts). All electrical wiring is tested for flame propagation and flammability, smoke generation, insulation retention and system functionality, toxicity and corrosiveness of emitted gases in accordance with international, domestic or German standards (see the article "Fire sliding gates").

In the raised position, the fire curtain is held by a friction brake with an electromagnet blocking the motor shaft. If the temperature sensors are triggered, the electromagnets are de-energized, and the fire curtain canvas spontaneously lowers under the weight of the cutting bar and its own weight.

To enhance the fire protection properties, fire curtains can be used in conjunction with sprinkler fire extinguishing systems. Irrigation with water is carried out in front of the fire curtain from the side of the ignition source, from both sides of the fire curtain, or sprinkling of the fire curtain itself is performed.

	Fire curtains are used to protect local window and door openings closed with standard windows and doors made of non-fire-resistant materials (plastic, wooden, aluminum, combined windows, wooden, glass, metal doors and doors made from materials based on wood processing products).
	Fire curtains can be used to protect fire and combustion products of evacuation exits - stairwells, and it is possible to articulate canvases with high tightness at an angle and create autonomous protection, regardless of the presence of rigid supports (video "fencing of individual zones")
	Fire curtains are used for zoning certain areas of office space, parking lots (video "zoning offices").
	Fire curtains can be used to protect large areas of cinemas, shopping centers, concert halls from fire and smoke (video "cinema concert halls" and "shopping centers").
	In the case of large-scale production, fire curtains may block individual sections of conveyor lines (video "conveyor lines").
	Fire curtains can be made in a horizontal design to block the spread of fire and smoke between floors (video "horizontal barriers").
	Fire curtains are effective for localizing fire and smoke in individual spans of a building when fencing a part of the facade from the outside (video "fencing building spans").
	With the help of fire curtains, it is possible to protect free-standing expensive or dangerous equipment in the event of a fire (video "protection of stand-alone equipment").
	Special fire curtains are designed to localize fire and smoke during the quick and convenient evacuation of people from crowded places (video "evacuation of people").

All fire curtains are manufactured as separate modules with their own shafts and motors, from which structures of considerable width and various shapes are assembled. There are restrictions on the height of fire curtain curtains (5 m), mainly due to the tensile strength of the material itself, as well as the dimensions of the wound drum, although manufacturers increase the strength of the curtain by reinforcing the fibers with steel threads and can produce longer curtains. At the request of the customer, fire curtains can be painted in different colors with special fire-resistant paints, and the structure itself can be decorated after installation. Installation of fire curtains is carried out exclusively by teams of professionally trained masters of companies that sell fire curtains.

This is due to the fact that they have a rather small range of possible geometric dimensions, weight, mass of the structure, which allows them to be closed quickly, even with an electric drive, in the event of a fire in the protected or adjacent premises. For example, for most manufacturers, a reasonable limit of standard sizes on order ends on double-leaf fire doors - 2.1 x 2.2; gates - 4.8 x 4.8; 4 x 6. Curtains of the same purpose have virtually no restrictions on width / height. In addition, they can be both vertical and horizontal, carried out with or without irrigation of the canvas with water for additional fire protection.

They are now widely advertised, calling either just an excellent replacement for traditional structures for protecting openings in capital barriers, or even an innovative breakthrough in fire protection during the construction of grandiose in design, the complexity of architectural, planning solutions for buildings / structures with their division into fire compartments , invisible until a critical situation arises by vertical and horizontal curtains that protect adjacent rooms not only from open fire, intense thermal exposure; but also from toxic products of combustion. Is this really the case, what are the real advantages and disadvantages of this novelty - it is worth understanding in detail.

Norms and rules

In order to immediately place all semicolons, it must be said that GOST “Fire curtains” - today there is no regulatory framework for state technical documentation in nature. Numerous manufacturers of domestic products, suppliers / sellers of imported goods, referring to SNiP, GOST, which their products allegedly fully comply with, to put it mildly, wishful thinking.

In order to understand this more thoroughly, and at the same time not offend anyone, you first need to understand which specific documents issued by state bodies in the field of technical regulation, and why some manufacturers/suppliers sometimes refer (the majority do not do this either):

• determining the method of testing for fire resistance of doors / gates.
• - for the same products for smoke and gas tightness.
• – Test methods for fire resistance for smoke screens.

Neither in the titles nor in the text of the first two official documents does the name of interest to readers appear at all. The latter has the definition below.

From fire terminology: a smoke screen / curtain / curtain is a device that prevents the spread of combustion products through the openings of building envelopes.

Again, not a word about fire curtains, although in terms of their basic design, smoke screens / curtains are closest to them, differing, in fact, only in less fire-resistant, non-combustible materials used for their manufacture, some differences that are not fundamental in this case.

To get through the regulatory and bureaucratic jungle and understand why such products are nevertheless legally produced, installed and operated, it is necessary to refer to the 2008 (as amended in July 2015), which regulates the technical aspects of the PB:

• Art. 37, classifying barriers, introduces another type - fire curtains, curtains, screens.
• In paragraph 2 of this article, it is indicated that curtains / screens, along with doors / gates, hatches / valves, are divided into types 1, 2, 3, and curtains belong to type 1.

Based on this, fire curtains, as a means of filling any openings in barriers enclosing fire compartments, building zones, are finally officially legalized.

• Materials for the production of fire curtains / screens must be non-combustible.
• In construction, technological / transport openings of barriers separating fire hazardous premises of category B, which cannot be closed with gates / doors, it is allowed to install fire curtains / screens instead.
• Curtains with a rated fire resistance limit, operated in the open position, must be equipped with devices that ensure automatic closing in case of fire.

In addition, the "green light" for the use of fire curtains is opened by: which determines the provision of fire resistance of buildings / structures; regulating the limitation of the spread of fire:

• Fire curtains are building structures that act as barriers.
• In station buildings, instead of walls, it is permissible to use curtains / screens with a fire resistance rating of at least E
• If it is not possible to install fire doors in the fences of elevator halls, then it is necessary to install screens with a limit of at least EI 45, which automatically close the openings in the event of a fire.
• The stage portal of the building of a cultural and entertainment institution, with a hall with a capacity of 800 seats or more, is equipped with a fireproof gas-tight curtain made of non-combustible heat-insulating materials with a fire resistance of at least EI
• Windows/openings of film projection/hardware rooms facing the auditorium are protected by curtains with a fire resistance of at least EI

In practice, manufacturers of curtains, as well as doors / gates, develop the design themselves, detailed technical specifications for the manufacture of serial commercial products, and after passing field tests for fire resistance, smoke and gas tightness, receive the appropriate certificates of compliance with the PB. Without such documents, these curtains cannot be considered as fire-fighting products, but at best they can be considered devices for protecting / draping building openings, while retaining heat well in the room.

Device and how it works

From the very beginning it is necessary to distinguish between the following products - fire curtains and smoke curtains / screens.

The first are designed to fill openings, blocking the path of fire, intense heat flow, partially or completely combustion products into adjacent rooms; the second - to completely block or partially limit the spread of the smoke flow.

The following difference: fire curtains completely block the construction, technological / transport opening in the barrier, providing the required fire resistance limit. Smoke curtains/screens, also sometimes referred to as curtains, can be lowered as completely; and to the height of the smoke layer formed in the protected room, determined by calculation.

In addition, the fire / smoke curtain / screen, unlike the curtain, may not have side guides in the body of which the fire-resistant canvas moves. Ensuring the protection of the opening is carried out due to the calculated excess of the geometric dimensions of the canvas vertically and horizontally in relation to the opening area.

Example: clause 5.4.5 of SP 4.13130.2013 expressly states that the fire curtain separating the portal of the stage of a theater with more than 800 seats must, when lowered, block the construction opening from the sides - by no less than 0.4 m, from above - 0, 2 m, while ensuring gas tightness.

The design of the fire curtain consists of the main elements / parts:

• Side U-shaped guides made of galvanized or stainless steel, in which the canvas moves up / down.
• Cloths with a thickness of 3 to 7 mm, wound on a shaft. As a rule, this is a composite material made of heat-resistant fabrics, such as fiberglass, reinforced with a metal thread. To impart additional properties, increase the limit of resistance to fire, exposure to high temperature, a heat-reflecting and / or thermally active / rapidly intumescent coating is applied to the canvas. The heat resistance of various types of fabric reaches significant values ​​- up to 1100℃.
• One or more shafts, with a web tightly wound around it, driven by an electric motor that lowers it. Roller blinds moving at an average speed of 0.1 m/s.
• The electromechanical part is enclosed in a protective casing/housing made of steel, located at the top of the entire structure. In general, outwardly, a fire curtain is very similar to protective shutters that close windows, doors of shops and offices located on the first floors of buildings at night. Only instead of typesetting metal strips - reinforced fire-resistant fabric.
• The lower tire filled with weighting agents, ensuring its weight is not less than 4 kg / p. m. This provides the necessary web tension in all fixed positions, as well as during ascent / descent.
• Web retainers in raised/working condition.
• A control unit connected to the building's alarm system to ensure automatic start when an alarm occurs.

In the "standby mode" the fire-resistant curtain fabric is in a twisted state inside the protective casing, usually only the edge of the lower rail is visible, which does not spoil the appearance of the opening; familiar to staff, visitors by analogy with widespread protective shutters.

When smoke, heat detectors, flame sensors are triggered, a signal is sent to the fire curtain control unit, and it automatically starts to lower, closing the opening, while the lower heavy edge - the tire ensures tight contact with the floor surface.

As a result of this timely limitation of the spread of fire, which began inside the protected premises. Due to the natural decrease in the oxygen content in the process of combustion, the lack of fresh air inflow, the release of a large amount of gaseous products, and the decrease in temperature, the fire often self-extinguishes. In other cases, even a rapidly developing fire is not able to overcome such a not very serious-looking obstacle.

The most common, supplied to customers, fire curtain EI 60 / EI 30. The specific choice depends on which product, with what standardized fire resistance limits for structural integrity, the ability to prevent intense heat flow from a fire, is indicated in the design documentation specification. Usually these indicators are quite enough to fill the majority of building volumes in fire barriers.

Items with fire ratings of EI 90 to 180 are much rarer, usually made to order, and the most commonly cited examples of their ability to be produced by a company are a publicity stunt that is just part of a customer/customer acquisition campaign and nothing else.

Attention: sometimes for fire curtains, by mistake or as a result of intrusive, but illiterate advertising on the websites of suppliers / intermediaries, they give out rolling, sectional doors, recruited from metal strips with heat-insulating filling, as well as curtains / screens assembled “into an accordion” that do not have side guides. Despite the external, some constructive similarity - they are not fire curtains.

Features of choice

To do this, it is necessary to clearly identify, outline the scope of such products that are intended for the following cases / purposes:

• To protect large openings that cannot be filled with fire gates and doors.
• Separation into fire compartments of huge in area, construction volume, complex in terms of planning public and industrial premises / buildings, including various stations, shopping centers, warehouse complexes, museums, theaters, covered parking lots.

The advantages of choosing fire curtains as filling in fire barriers include the following:

• Using them, you can divide rooms or buildings into compartments, sections or zones of almost any configuration, area. For example, if the width of the opening exceeds 5-6 m, then the curtains are made of several overlapping canvases, allowing you to reliably protect any opening - from the door to the portal.
• The use of fire curtains has little effect on the interior design of the premises, especially since metal rails, a protective casing and even a canvas can be painted in the desired color to order.
• Unlike hinged, retractable / sliding, lifting fire protection products, curtains do not reduce the usable volume of the room.
• There are types of curtains, with horizontal forced deployment of a fire-resistant canvas, to protect large open openings in the ceilings of buildings, which gives architects and designers new opportunities to increase the volume of buildings without deviating from the current PB standards.
• The use of water irrigation, which is structurally part of the product, allows you to provide a reliable additional line of protection against fire and smoke.

Rules for installation and installation

products are mounted inside the opening, if its dimensions allow it; or above the opening, in order to leave completely free passage / passage through it.

Important: installation, maintenance, repair of fire curtains, as well as other types, types of filling openings in capital barriers with a standardized fire resistance limit - gates / doors, valves, curtains / screens, hatches, have the right to perform only specialized enterprises / organizations that have the appropriate license Ministry of Emergency Situations.

Practice, coupled with statistics, convincingly show / prove that self-activity in such serious matters related to the safety of people in buildings is often too expensive.

Given that there are different types of fire curtains, finding the best option from finished products of standard sizes or ordering a non-standard product for your premises / building, signing an installation contract, servicing the customer will not be difficult and will take a minimum of time.