Zipilalazo zimawotcherera kumachubu pogwiritsa ntchito kuwotcherera kwamagetsi, kumapanga ma welds apamwamba kwambiri.Machubu okhala ndi zinthu zambiri amagwiritsidwa ntchito m'malo mwa machubu opangidwa ndi zingwe zamakina otengera kutentha m'mafakitale a petrochemical, pomwe pamwamba pake pamakhala malo owononga kwambiri monga mpweya wauve kapena zakumwa.Machubuwa akuyenera kukhala osagwirizana ndi zida zankhanza ndipo ayenera kutsukidwa pafupipafupi.