The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 1985
Filed:
Jul. 26, 1983
JGC Corporation, Tokyo, JP;
Taihei Kinzoku Kogyo Co., Ltd., Yamato, JP;
Abstract
A centrifugally cast double-layer tube with resistance to carbon deposition, comprising an inner layer of a specific metallic material containing 1-10 wt % of Al and an outer layer of a heat resisting metallic material, can be applied to apparatuses for treating a fluid, containing hydrocarbons, their derivatives, or carbon monoxide, at elevated temperatures and to piping for transferring the fluid without carbon deposition on its inside surface, because the surface of said inner layer is oxidized to form a firm Al-containing oxide film prior to and/or during the treatment of the fluid, and also a sufficient strength and ductility of the tube are preserved by the support of the outer layer of said tube.