When it melts the desired temperature is reached .
Thermelchalks, temperature indicating crayons offer economical & accurate surface temperature readings & are ideal for temperature measurement of various metals. Available in different temperature ratings systematically spaced between 50 deg C to 800 deg C , each Thermelchalk is densely made to last longer .
Applications :
Preheating
Postheating
Annealing
Stress relieving
Used in following industries :
Welding
Power plants
Oil refineries
Shipyards
Metal Fabrication Plants




