[Hindi|Urdu] Heat treatment - Basic Concept (Quenching, Tempering, Annealing & Normalizing)

What is Heat treatment and different types of heat treatment explained in this video.
[Hindi|Urdu] Heat treatment - Basic Concept (Quenching, Tempering, Annealing & Normalizing)
[Hindi|Urdu] Heat treatment - Basic Concept (Quenching, Tempering, Annealing & Normalizing)
[Hindi|Urdu] Heat treatment - Basic Concept (Quenching, Tempering, Annealing & Normalizing)

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