FIELD: machine building.
SUBSTANCE: thin-walled bushings out of corrosion resistant metal are positioned inside ends of pipes so, that external ends of bushings project beyond ends of pipes; projecting ends of bushings are flanged on ends of pipes; bushings are fixed by mutual calibration of bushings and pipe ends by internal diametre; coating is applied and prepared ends of pipes are butt-welded according to process of two-layer metal weld.
EFFECT: raised reliability of pipe connection.
4 cl, 3 dwg
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RU2197676C2 |
