US-based Miller Electric has introduced its Big Blue 300 Pro CC/CV engine driven welder generator, suitable for pipe and construction contractors as well as MRO and fabrication professionals. It is available with CAT, Deutz or Perkins diesel engines for low-speed 1800rpm operation, fuel efficiency and low sound levels of 71dba at maximum output. The Big Blue 300 Pro features 12kW of generator power and a 20 to 410amp welding output, it also provides tailored arc control (DIG) which allows operators to change arc characteristics for specific applications and electrodes, such as 7018 and 6010.