me ek mechanical engineering ka student or mujhe manufacuing technology lacture hall me samajh me nhi aati hai but aapka video se samjhta hu aap or bhi video upload karte rahiye sir
Bro ,lpg cylinder use karna hai muje metal melt krne ke liye jewellery purpose, to muje konsa pipe nove Lana hoga jise m control bhi Kar sakun high flame or low flame