welding flames(हिंदी में)
Channel: Growing knowledge
Date: 2020-12-21

Related link:

Full annealing process:
https://youtu.be/x_hUdt9e3Nw
Heat treatment process;
https://youtu.be/W7D8GyatwCQ
Normalizing process:
https://youtu.be/VUkRr7h101A

Hardening process(हिंदी में)
https://youtu.be/uZ8Rm20pNzY