27) What is the fault if excess deposit of tiny metal globules formed on the job surface along weld?
Answer is:
Spatters
Answer is:
Copper and acetylene form explosive
Answer is:
Surface coated with oxides or oily material
Answer is:
Shut off acetylene first, oxygen next and dip in water
Explanation:
In oxy acetylene welding Acetylene gas is closed first to avoid back fire.
