Protected carbon steel pipe for conveying flue gases in a heat exchange apparatus

• US 20080142205A1
• Filed: 11/30/2007
• Published: 06/19/2008
• Est. Priority Date: 12/13/2006
• Status: Abandoned Application

• Current Assignee: Unical Ag S.p.A. (Unical Invest SpA)
• Original Assignee: Unical Ag S.p.A. (Unical Invest SpA)
• Inventors: Jahier, Giovanni
• Application Number:
  US11/987,436
• Publication Number:
  US 20080142205A1
• Time in Patent Office: Days
• US Class Current: 165/177
• CPC Class Codes: F28F 1/40 the means being only inside the tubular element
• CPC Class Codes: F28F 19/02 by using coatings, e.g. vitreous or enamel coatings
• CPC Class Codes: F28F 21/082 from steel or ferrous alloys

Abstract

A protected carbon steel pipe for conveying flue gases in a heat exchange apparatus, comprising an outer jacket made of carbon steel, which is provided internally with a plurality of contiguous sectors made of corrosion-resistant material and provided with variously shaped fins, a continuous layer made of corrosion-resistant material which is interposed and in contact between the outer jacket and the plurality of contiguous sectors being provided.

Claims

1. A protected carbon steel pipe for conveying flue gases in a heat exchange apparatus, comprising an outer jacket made of carbon steel, which is provided internally with a plurality of contiguous sectors made of corrosion-resistant material and provided with variously shaped fins, wherein a continuous layer made of corrosion-resistant material which is interposed and in contact between the outer jacket and said plurality of contiguous sectors is provided.