Metalworking-metalga ishlov berish

1. 
   Metalworking-metalga ishlov berish
   
2. 
   Plumbering (bizningcha xato yozilgan so‘z, aslida plumbing bo‘lishi mumkin.) -santexnika ishlari
   

3. Electrode arc welding - elektrod yoyni payvandlash
4. Automatic and semi-automatic welding works-avtomatlashgan va yarim avtomatlashgan payvandlash ishlari
5. Gas-shielded metal and tungesten electrode arc welding-gazdan himoyalangan metall va elektrodli payvandlash
6. Gas welding-gaz bilan payvandlash