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Annealed/ Float Glass (A)
Annealed glass is ordinary glass, also called "Float glass" that has not been heat-strengthened or tempered. Annealing float glass is the process of controlled cooling to prevent residual stress in the glass and is an inherent operation of the float glass manufacturing process.
During the float glass manufacturing process, the hot glass is gently cooled in the annealing lehr, which releases any internal stresses from the glass to enable the cutting and further processing of the glass post manufacture. Annealed glass can be cut, machined, drilled, edged, and polished. Annealed glass when broken gives large fragments with sharp edges and so is not usually classifiable as a "safety" glass.
Our parent company, Yesho Float Glass Pvt. Ltd. has been one of the biggest distributors of float glass in South India from over three decades. We carry all types of float glass varying from 3mm to 19mm in thickness from a variety of manufacturers across the globe. We are also able to source all types of float glass as per our client’s needs.
Our parent company, Yesho Float Glass Pvt. Ltd. has been one of the biggest distributors of float glass in South India from over three decades. We carry all types of float glass varying from 3mm to 19mm in thickness from a variety of manufacturers across the globe. We are also able to source all types of float glass as per our client’s needs.
Tempered Glass (T)
Tempered glass is physically and thermally stronger than normal glass. The greater contraction of the inner layer during manufacturing induces compressive stresses in the surface of the glass balanced by tensile stresses in the body of the glass. For glass to be considered tempered, this compressive stress on the surface of the glass should be a minimum of 69 megapascals (10,000 psi). For it to be considered safety glass, the surface compressive stress should exceed 100 megapascals (15,000 psi). Fully tempered glass is approximately four times stronger than annealed glass of the same thickness and configuration.
When broken, tempered glass will break into many relatively small fragments, which are less likely to cause serious injury. The typical process to produce tempered glass involves heating the glass to over 1,000°F, then rapidly cooling to lock the glass surfaces in a state of compression and the core in a state of tension.As a result of the increased surface stress, if the glass is ever broken it only breaks into small circular pieces as opposed to sharp jagged shards. This characteristic makes tempered glass safe for high-pressure and explosion proof applications.
Tempered glass is often referred to as “safety glass,” because it meets the requirements of the various code organizations. This type of glass is intended for general glazing and safety glazing such as sliding doors, storm doors, building entrances, bath and shower enclosures, interior partitions and other uses requiring superior strength and safety properties.
Heat - Soaking Test (HST)
All float glass contains some level of imperfection. One type of imperfection is nickel sulfide (NiS) inclusion. Most NiS inclusions are stable and don’t cause any problems. There is, however, the potential for NiS inclusions that may cause spontaneous breakage in tempered glass without any load or thermal stress being applied.Heat soaking is a process that may expose NiS inclusions in tempered glass.
The process involves placing the tempered glass inside a chamber and raising the temperature to approximately 550°F or 287°C to accelerate NiS expansion. This causes glass containing NiS inclusions to break in the heat soak chamber, thus reducing the risk of potential field breakage.The heat-soaking process is not 100 percent effective, adds cost and carries the risk of reducing the compressive stress in tempered glass.
Heat-strengthened glass has a much lower potential incidence of spontaneous breakage than tempered glass. For applications where additional glass strength is required due to thermal stress, and safety glass is not mandated, we recommend heat-strengthened or laminated glass to reduce the potential for spontaneous breakage.
Heat-strengthened glass has a much lower potential incidence of spontaneous breakage than tempered glass. For applications where additional glass strength is required due to thermal stress, and safety glass is not mandated, we recommend heat-strengthened or laminated glass to reduce the potential for spontaneous breakage.
Heat Strengthened Glass (HS)
Heat Strengthened glass is similar to tempered glass except that the cooling is done at a much slower pace. Annealed glass is heated to approximately 650-700ºC, but the cooling process is slower than that for tempered glass. As suchHS glass is about twice as strong as annealed glass of the same size and thickness and about half as strong as fully tempered glass. HS glass has been strengthened thermally by inducing a surface compression of 6000 to 9000 psi as compared to a range of 11000 to 20000 psi in case of fully tempered glass. HS adds strength to the glass while limiting the change in its breakage characteristics. The cooling process places the surfaces of the glass in a state of high compression and the central core in a state of compensating tension.
HS glass is not a safety glass product as defined by the various code organizations, as such it is preferred in glazing applications not controlled by safety codes. Furthermore, the risk of NiS inclusions are relatively less than that of tempered glass. HS is intended for general glazing, where additional strength is desired to withstand wind load and thermal stress; in addition to that, when it breaks, HS typically stays within the frame due to the larger shards of glass.
Double - Glazed Glass (DGU)
An insulating glass unit is a hermetically sealed composition of two or more glass panes separated by spacers, with the cavities filled with dehydrated air or gas. The glass sheets are connected by a perimeter spacer using sealants designed to reduce water vapour penetration.
The whole unit is hermetically assembled by a secondary edge seal, which gives structural robustness to the insulating glass. The spacer contains a desiccant, which absorbs humidity from the air or gas space. The insulating glass unit (IGU) may be made manually or with an automatic assembly plant. The most important function of insulation glass is to reduce thermal losses, which offers many advantages: lower energy consumption, perfect transparency by reducing the incidence of condensation on the glass surfaces.
Most IGUs are Double-Glazed that is two panes of glass. DGU windows are an ideal energy efficient choice with the added benefit of minimizing noise. The sealed air gap between the two panes acts as an added layer of insulation. This extra insulation lessens your reliance on artificial heaters and air conditioners and can ultimately reduce your energy costs. When you are close to a window, your comfort is also affected by the temperature of the glass. With double glazing it’s harder for the unwanted outside temperature to transfer through, leaving the inside pane close to room temperature. Double-Glazing also reduces condensation which can result in the unhealthy formation of mold.
Most IGUs are Double-Glazed that is two panes of glass. DGU windows are an ideal energy efficient choice with the added benefit of minimizing noise. The sealed air gap between the two panes acts as an added layer of insulation. This extra insulation lessens your reliance on artificial heaters and air conditioners and can ultimately reduce your energy costs. When you are close to a window, your comfort is also affected by the temperature of the glass. With double glazing it’s harder for the unwanted outside temperature to transfer through, leaving the inside pane close to room temperature. Double-Glazing also reduces condensation which can result in the unhealthy formation of mold.
Triple - Glazed Glass (TGU)
Triple-Glazed has three glass panes and as such is more resilient to pressure, strength, and outside temperature and noise. Argon gas can also be used in between the layers of glass, and it is this gas that makes them so much more energy efficient. Although invisible to the naked eye, argon gas sits sandwiched between the panes of glass. The gas allows the sunlight to pass through all while cutting down on the heat energy that can escape through it. The three layers of glass also provide increased security; thicker the area, harder it is for vandals to break. Additionally, they offer great energy savings when compared to regular and double-glazed windows.
Installing Triple-Glazed windows is equivalent to upgrading your walls and ceilings from R-20 to R-40 (in certain circumstances), and they can decrease relative heat loss, which increases thermal comfort inside. To cut costs, a combination of Double-Glazed windows and Triple-Glazed windows can be used with the building orientation. Consider insulated hollow frames when installing your windows, as they can increase their performance, which saves money in the long run.
Laminated Glass (L)
Laminated Glass is produced when two or more glass lites are permanently bonded with one or more plastic interlayers (PVB) using heat and pressure. The glass and interlayers can be a variety of colours and thicknesses. Laminated Glass is often called “safety glass” because it meets the requirements of various code organizations. Laminated Glass can be broken, but the fragments tend to adhere to the plastic layer and remain largely intact, reducing the risk of injury. Laminated Glass can be incorporated with heat-strengthened and tempered glass to further increase impact resistance.
Laminated Glass is also available with a full range of low-E coatings to increase energy efficiency as well as cost savings for the homeowner. Coatings can be embedded or exposed in a laminated unit to configure a glazing system that provides maximum thermal efficiency. We take the complexity out of Laminated Glass and even offer make-to-order and high-volume custom sizes. This glass can be used in many configurations to meet the needs of regional climates and local codes.
Pattern Glass
Patterned Glass is a kind of decorative translucent glass with embossed patterns on one or both surfaces. Pattern Glass or Decorative Glass or Rolled Glass is generally used where privacy or obscurity is desired but light transmission is still important. With the special property of decoration, patterned glass can allow light to pass through, at the same time, it can also prevent clear view. Usually, it transmits only slightly less light than clear glass.
Patterned Glass is not-perfectly-smooth structure with different patterns impressed on it. The depth, size, and shape of the patterns largely determine the magnitude and direction of reflection.
Basically, Patterned Glass has a pattern impressed on one side of the glass which prevents someone from seeing though it, for privacy. Pattern Glass can also be ordered in various tints as well. A common application of this sort is when used in privacy walls to separate one room from another. Patterned Glass is made with a rolled glass process.
Basically, Patterned Glass has a pattern impressed on one side of the glass which prevents someone from seeing though it, for privacy. Pattern Glass can also be ordered in various tints as well. A common application of this sort is when used in privacy walls to separate one room from another. Patterned Glass is made with a rolled glass process.