Gas welding II Types of Flame in Hindi

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  • čas přidán 6. 04. 2019
  • Gas welding and types of flame
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Komentáře • 2

  • @mdAll7
    @mdAll7 Před 4 lety

    Carbed and ऑक्सीजन ges ke bare me bato ki gas back marne se kya hota hai aur huska upaay

  • @mdAll7
    @mdAll7 Před 4 lety

    sir muze aap ye bato ki gas beck kese marti hai