... equipment;2.For electric welding (DC), the common welding rods or high-carbon steel welding rods with the diameter of 2 ... .0 to 6.0, are used, the rated duty cycle is 60%, and the overload use is not allowed; and the diameter ... (for example, right angle grinders and electric hand drills), etc. in oil fields, road projects, bridge construction projects, towns, rural areas ...