Stein Industrie

Electricite De France

Societe Anonyme Dite: Stein Industrie

Societe Anonyme

Jean Bezier

Marc Franzolini

Edmond Maria

Alain Vanderschaeghe

Guy Zacharie

Gilbert Vigneron

Pierre Vidal

Thong Nguyen-Thanh

Alain Vanderschaegbe

Lucien Guillemin

To repair a corroded region of the end of a heat exchanger tube, a sleeve is inserted, then expanded into the tube both in the area of the tube sheet and beyond the corroded area, then local welds are made in each of the expanded regions. Thereafter, the end of the sleeve is expanded against the tube in a region inside the tube sheet and above the local weld.

Method of repairing or protecting an end of a metal tube in a heat

Assembly device of tubes in low carbon ferritic stainless steel having 17 to 18.5% by weight of chromium on a tube-plate of carbon steel. It includes at least one overlay of low carbon steel on the surface of the tube-plate opposite the plurality of tubes, of such thickness that the ends of the tubes are located at an intermediate level of the overlay, and weld beads between the ends of the tubes and the overlay.

Assembly device of ferritic stainless steel tubes on a carbon

Assembly device of tubes of low carbon ferritic stainless steel having 17 to 18.5% by weight of chromium on a tube-plate of carbon steel. It includes a first overlay of low carbon austenitic stainless steel having 11.50 to 14% by weight of nickel and 22 to 25% by weight of chromium on the surface of the tube-plate opposite the plurality of tubes, a second overlay on the first of low carbon austenitic stainless steel having 10 to 12% by weight of nickel and 19 to 23% by weight of chromium extending beyond the upper level of the ends of the tubes, and weld beads with or without filling metal around these ends between these ends and the stainless steel of the second overlay.

Method of assembly of ferritic stainless steel tubes to a carbon steel

Assembly of tubes in low carbon ferritic stainless steel having 17 to 18.5% by weight of chromium on a tube-plate of carbon steel. It includes at least one overlay of low carbon steel on the surface of the tube-plate opposite the plurality of tubes, of such thickness that the ends of the tubes are located at an intermediate level of the overlay, and weld beads between the ends of the tubes and the overlay.

Assembly of ferritic stainless steel tubes on a carbon steel tube-plate

Assembly device of ferritic stainless steel tubes on a carbon steel

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Croix, France

Jean Bezier