Excess use of flux

Due to excess of polished surface

Surface coated with oxides or oily material

Excessive heating of metal s surface

Shut off both valve quickly and dip in water

Shut off oxygen first and acetylene next

Shut off acetylene first, oxygen next and dip in water

Shut off both valve, oxygen first and dip in water

Destructive test

Non destructive test

Radio graphic test

Magnetic test