Method for forming a metallic coating on steel pipes

Details Method for forming a metallic coating on steel pipes Method for forming a metallic coating on steel pipes

1989-12-22

1992-03-10

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating predominantly single metal or alloy substrate of...

148127, 205170, 205176, 205217, 205226, C25D 510, C25D 550

Patent

active

050947303

ABSTRACT:
A method of applying a metallic coating to metallic sealing and/or threaded regions of steel pipes which are under high pressure per unit of surface by a pretreatment of the surface to be coated which consists of a cleaning and degreasing and an electrolytic deposition of a layer of tin by a first heat treatment at a temperature between about 150.degree. and about 200.degree. C. and a second brief heat treatment above the melting point of tin with subsequent cooling is provided. A metallic coating which is formed using said method is also provided.

REFERENCES:
patent: 3285838 (1966-11-01), Morgan et al.
patent: 4432487 (1984-02-01), Shibata
patent: 4513995 (1985-04-01), Niehaus et al.
patent: 4726208 (1988-02-01), Saunders

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