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Tempered glass,the strong and safety glass,is widely used in construction.Its performance of anti-impact,anti-bending and anti-tmepeerature difference is 3 to 5 times than the ordinary glass,it becomes small round pieces when broken.Thus people will not get hurt. This type of glass is intended for glass facades,sliding doors,building entrances,bath and shower enclosures and other uses requiring superior strength and safety properties. All fully tempered glass for a project can be heat-soaked in our oven. The concept of heat-soaking is defined as the transfer of potential on-site breakage of tempered glass to breakage in the factory under a controlled process of accelerating the inversion of nickel sulphide stones to their low temperature phase. While heat-soaking does not guarantee that breakage will be completely eliminated in the installed tempered glass; it is an invaluable test for identifying batches that have a high incidence of nickel sulphide inclusions. Product features: 1.About four times stronger than normal float glass of same thickness. 2.Better resistance to thermally induced stress. 3.Typically breaks into classic tiny piece pattern 4.Occasionally can experience spontaneous breakage due to nickel sulfide inclusion. Quanlity Standard: GB/T9963-1998<<Tempered glass>>Chinese National Standard GB17841-1999<<Tempered Glass for curtain wall and heat-strengthen glass>>Chinese National Standard UK-BS626 industrial safety standards