duct fabrication machine auto line long-distance pipelines ...
duct fabrication machine auto line long-distance pipelines ... Automatic welding technologies for long-distance . 2014-10-1u2002·u2002In recent years, automatic welding, high in automatic degree, low in labor intensity, good in welded joint appearance shape, fast in welding speed, high in first-time welding pass rate, has been widely applied,,,,, in on-site welding of long-distance oil/gas ...
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