ANTI-CORROSION COPPER OR COPPER ALLOY PIPE HAVING BENT SEGMENT, ITS MANUFACTURING METHOD AND WATER SUPPLYING AND HOT WATER SUPPLYING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an anti-corrosion copper or copper alloy pipe having a bent segment, its manufacturing method and water supplying and hot water supplying device in which any water quality can be applied in reference to a difference in applied environment or the like and the anti-corrosion characteristics such as anti-hole corrosion characteristic and anti-corrosion characteristic or the like can be kept for a long period of time ranging from a low temperature to a high temperature. ;SOLUTION: An inner surface of a copper or copper alloy pipe having a bent segment is formed with amorphous ceramics film. Either copper or copper alloy pipe having this bent segment is manufactured by a method wherein the amorphous ceramics film is formed upon performing a bending work of the copper or copper alloy pipe or after the amorphous ceramics film is formed, the bending work is carried out.;COPYRIGHT: (C)2001,JPO