Method for applying corrosion-protective coating to joint betwee

Details Method for applying corrosion-protective coating to joint betwee Method for applying corrosion-protective coating to joint betwee

1996-10-11

1999-07-27

Bryant, David P.

Metal working

Method of mechanical manufacture

Assembling or joining

156 86, 1563042, B23P 1700

Patent

active

059269367

ABSTRACT:
In a joint between welded end portions of corrosion-protectively coated steel pipes, a heat-shrinkable tube is positioned so as to cover the outer circumference of a welded portion and the outer circumferences of its adjacent portions, and the heat-shrinkable tube is thermally shrunk in a state in which a gap between the heat-shrinkable tube and the aforementioned portions is kept in a vacuum so that the aforementioned portions are corrosion-protectively coated with the heat-shrinkable outer layer of the heat-shrinkable tube thus thermally shrunk.

REFERENCES:
patent: 3138861 (1964-06-01), Gaido
patent: 3962394 (1976-06-01), Hall
patent: 4323607 (1982-04-01), Nishimura
patent: 4709948 (1987-12-01), Archer et al.
patent: 4802509 (1989-02-01), Brandolf
patent: 5226995 (1993-07-01), White

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