Pipes and tubular conduits – Distinct layers – Coated
Patent
1974-10-31
1976-05-18
Steiner, Arthur J.
Pipes and tubular conduits
Distinct layers
Coated
291835, 29191, 291963, 291966, B32B 1500
Patent
active
039570860
ABSTRACT:
Ferrous metal is provided with a corrosion resistant coating having a surprisingly great ability to retard the formation of rust when subjected to salt spray testing. Successive thin layers of copper and nickel are electroplated on steel tubing after which the tubing is terne coated by hot immersion. The corrosion resistance which is achieved by this combination of layers greatly exceeds the sum of the corrosion resistance of each layer when used alone.
REFERENCES:
patent: 626994 (1899-06-01), Francis
patent: 1930191 (1933-10-01), Bundy
patent: 2371725 (1945-03-01), Young
patent: 2635020 (1953-04-01), Beebe, Jr.
patent: 2647304 (1953-08-01), Cook et al.
patent: 3644105 (1972-02-01), Selker et al.
patent: 3730758 (1973-05-01), Laidman
Bundy Corporation
Steiner Arthur J.
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