Hello pipeit, as Jim said, Miller has some nice advanced process GMAW systems that would work very well, Lincoln also has the STT GMAW systems, Fronius, the list goes on. Bottom line, depending upon application and conditions I am sure that you could find a nice balance between speed and quality with an application of advanced GMAW of one flavor or another. There is a company in my town called JH Kelly, they use an extensive amount of the Miller Pipeworx equipment on an arrauy of piping with very good results. Good luck and regards, Allan