FIELD: machine building.
SUBSTANCE: pipe contains protective bushings out of corrosion resistant metal concentrically arranged on ends of pipe; bushings are made with bell mouth. Internal parts of protective bushings are located inside ends of the shell and hold them down to pipe surface; while external parts with removed shell are located in zones of welding thermal effect. Thrust rings attached to the protective bushings are arranged in circular gaps between the pipe and protective bushings tightly to the ends of the shell.
EFFECT: reduced material expenditures, simplified process of fabrication and raised efficiency of pipe.
4 cl, 4 dwg
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