Heat Treated Glass

Heat Treated Glass

Tempered and heat-strengthened glass is obtained by heating ordinary glass to its softening point and then suddenly cooling down to form compression in the surface layer of the glass, thus the mechanical strength is increased by times.

Tempered and Heat Strengthened Glass

Tempered and heat-strengthened glass is obtained by heating ordinary glass to its softening point and then suddenly cooling down to form compression in the surface layer of the glass, thus the mechanical strength is increased by times.

Features of tempered glass

Safety: when broken, tempered glass becomes small granules, which prevent substantial hurt

to human body.

High strength: the strength of tempered glass is 4 to 5 times that of annealed glass.

Thermal stability: tempered glass has excellent thermal stability, which can withstand up to

300°C thermal shock.

Tempered glass is a kind of safety glass and is widely used in places which call for high mechanical strength and safety, such as glazed door, curtain wall, vertical window, partition wall, and partition screen close to heat source and subject to violent thermal shock.

Features of heat-strengthened glass

Heat-strengthened glass differs from tempered glass in its surface compression; its mechanical strength is about 1.6-2 times that of annealed glass. Heat-strengthened glass has outstanding thermal stability, and its flatness is close to that of annealed glass and better than that of tempered glass.

Specifications

Dimensions (mm): Maximum dimension: 2440 x 6000, Minimum dimension: 200 x 300

Thickness (mm): Tempered glass : 4 – 22, Heat-strengthened glass : 4 -12

Curved Tempered Glass

Curved tempered glass or curved heat-strengthened glass, is achieved by heating glass to softening temperature and then bending by weight or external force, followed by fast cooling with air blowing. SGC adopts advanced synchronized roller way formation technology, being able to produce various curved tempered glass products, such as round-shaped, J-shaped etc., with high formation precision and quality. If required by application, curved insulating glass, curved laminated glass, or curved tempered laminated coated insulating glass by use of bendable coated glass, can also be manufactured.

Quality

Conforming to ASTM1048, the American standard

Conforming to BS6206, the British standard

Specifications

Thickness (mm): 5 -19

Maximum dimension (mm): 2440 x 4200

Minimum dimension (mm): 600 x 400

Application

Round glass curtain wall, lighting ceiling, sight viewing elevator channel, indoor round shaped partition, glass guard-rail, decoration glass, furniture etc.

Quality

Curved tempered glass conforming to ASTM C 1464 Standard

Heat Soak Test

Spontaneous breakage is an inherent nature of tempered glass due to volume change occurred during crystal form transformation of nickel sulfide inclusions and other defects present in the glass. Heat-soak test is an effective procedure for bringing about spontaneous breakage before exiting works, thus limiting the possibility of spontaneous

breakage after installation. By placing tempered glass in heat-soak furnace, heating to a desired temperature, preserving for enough time and cooling down, the crystal form of nickel sulfide inclusions is stabilized and the internal stress is relaxed to a certain extent. During this process, tempered glass with large enough nickel sulfide inclusions and other defects will be broken by induced extra stresses. As a result, heat-soak treated tempered glass will have a much less likelihood of spontaneous breakage than normal tempered glass.

Specifications

Maximum size(mm): 2400×5000

Minimum size(mm): 300 x300

Thickness(mm): 4, 5, 6, 8, 10, 12, 15, 19

Quality

Conform to EN14179 standard.

Most of Heat Treated Glass is made by customer’s order. We also stock the following standard tempered glass door panels:

Tempered Shower Door Glass

THICKNESS                                                        STOCK SIZES

10mm   (3/8”)   Sliding Set(Fix panel+Sliding Panel)      60” x 72”, 60” x 76” , 60X80”

10mm   (3/8”)    (2 cut out and  2 holes)   28” x 71-9/16”, 28” x 75-6/16” , 28 x 79-9/16”

2.5mm    SS

Tempered Patio Door Glass

THICKNESS                                                        STOCK SIZES

3.2mm    (1/8”)            28” x 76”,  34” x 76” , 46”x 76”, 31-3/8”x73-3/8”,43-3/8”x73-3/8”

5mm    (3/16” )            28” x 76”,  34” x 76” , 46”x 76”, 58”x76”

Tempered Entrance Door Glass

THICKNESS                                                        STOCK SIZES

5mm    (3/16” )                            31-3/8” x70-5/8”,  31-3/8” x 77-5/8”