There are many types of welding machines, including gas cutting machines, gas welding machine and others. Operators are also required a lot, worker must have medical, professional training certificates. They should wear protective equipment before work, such as welding gloves, welding mask and auto darkening. They carefully check the electrical , gas welding equipment , equipment safety and reliability of the pressure vessel , sealed containers and pipes. When we operate the welding work, we should check in advance of toxic, hazardous, flammable, explosive material.
