| 摘要 |
The invention relates to components manufactured from heat-resistant steel, in particular tubes such as furnace tubes, which are provided on at least one side with a layer for improving resistance in particular to (catalytic) carbonization and coking. According to the invention, a component manufactured from heat-resistant steel, in particular a tube, is obtained which is provided on at least one side with a layer applied by welding, which layer comprises Ni, Cr and Al; Ni, Cr and Si; or Ni, Cr, Al and Si.
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