Corrosion-resistant pipe for use as collector pipe in preheating furnace for reducing gas for direct reduction of iron comprises carbon mono-oxide, has corrosion-resistant layer made of nickel material and supporting layer made of steel

摘要

The corrosion-resistant pipe (A) has a corrosion-resistant layer (K) and a supporting layer (T). The corrosion-resistant layer is made of nickel material and the supporting layer is made of steel. The corrosion-resistant layer is made of metal alloy. The supporting layer is made of low-alloy steel and austenitic material. The supporting layer is provided with a thickness of 10 and 30 millimeter. The pipe has a diameter between 500 and 2000 millimeter.