UOE is a method used for production of longitudinally welded large diameter pipes. Longitudinal edges of steel plates are first beveled using carbide milling equipment. Beveled plates are then formed into a U shape using a U-press and subsequently into an O shape using an O-press.
UOE mill adopts Uing and Oing forming, the formed pipes are welded inside by five internal welding stations with three wires for each weld,and welded outside by four external welding stations with three wires for each weld. According to different customers’ requirements, the welded pipe can be expanded by mechanical or hydrostatic expander to enhance the dimension accuracy, and eliminate the residual stress.
UOE mill adopts Uing and Oing forming, the formed pipes are welded inside by five internal welding stations with three wires for each weld,and welded outside by four external welding stations with three wires for each weld. According to different customers’ requirements, the welded pipe can be expanded by mechanical or hydrostatic expander to enhance the dimension accuracy, and eliminate the residual stress.