| 摘要 |
Furnace for cracking of hydrocarbons containing one or more tubes, which are made from an alloy having 15-30 weight % Cr, 3-10 weight % aluminium, not more than weight 1% of one or more of zirconium, titanium, hafnium, cerium and calcium, the balance being iron. The insides of the tubes may be covered by aluminium oxide layers obtained by preoxidation of the tubes. |
