Glass tempering machines and float glass making machines and are two different types of machine used in glass industry.
The float glass making machine is the machine to manufacture float glass from raw materials, like sand, soda ash (sodium carbonate), dolomite, limestone, and salt cake (sodium sulfate) etc.
A glass tempering machine is the machine to strengthen and improve the safety of existing flat glass by heating and cooling it rapidly.a glass tempering machine is used to produce tempered glass used in buildings, shower doors,etc.
Moreover, float glass making machines are typically much larger and more expensive than glass tempering machines.