Corrosion-resistant, double-wall pipe structures

Details Corrosion-resistant, double-wall pipe structures Corrosion-resistant, double-wall pipe structures

1982-07-29

1985-12-03

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

Lined

285189, 285286, 285416, 285334, 22826313, F16L 914

Patent

active

045562407

ABSTRACT:
In a corrosion-resistant, double-wall pipe structure formed by tightly fitting a stainless-steel inner pipe in an outer pipe, the inner pipe at any portion thereof which is liable to be adversely affected by heat due to heat processing is replaced by an inner tube of a special metal having corrosion resistance which is not easily impaired by the heat, the inner tube being joined integrally to the remainder portion of the inner pipe of the stainless steel. Examples of the special metal are Inconel 625, Incoloy 825, and Hastelloy.

REFERENCES:
patent: 2136474 (1938-11-01), Straty
patent: 2209290 (1940-07-01), Watts
patent: 2308307 (1943-01-01), Robinson
patent: 3336054 (1967-08-01), Blount et al.
Welding Structures of Hastelloy Alloys, J. A. Gallaher, The Welding Journal, pp. 641-649; Jul. 1945.
Special Features of the Welding of Nickel to Mild and Stainless Steels, G. S. Kuzmin et al., Automatic Welding, vol. 23, N. 9, 9/1970.
Compilation of Trade Names, Specifications, and Producers of Stainless Alloys and Super Alloys, pp. 91, 111.
High Performance Alloy Specialists, Cabot Corporation, 2 pages.

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