Title:
工業化学設備用の筒状管
Document Type and Number:
Japanese Patent JP2004514788
Kind Code:
A
Abstract:
The invention provides a tube for use in furnaces where gas and liquid media are being passed through the tube from one end to the other while being subjected to substantial heating and decomposition resulting therefrom. The tube is made of a stainless iron-nickel-chromium-base alloy comprising in weight-% max 0.08% C, 23-27% Cr, 33-37% Ni, 1.3-1.8% Mn, 1.2-2% Si, 0.08-0.25% N, 0.01-0.15% rare earth metals, and Fe and usual impurities. The cylindrical tube has a smooth outer surface and an inner surface provided with valleys or recesses extending longitudinally with a smoothly curved bottom profile.
Inventors:
Martin Lassi, Wolf
Lundberg, Mats
Aengren, Claes
Oderstum, Thomas
Lundberg, Mats
Aengren, Claes
Oderstum, Thomas
Application Number:
JP2002545210A
Publication Date:
May 20, 2004
Filing Date:
November 23, 2001
Export Citation:
Assignee:
SANDVIK ACTIEBOLAG
International Classes:
C22C30/00; C22C38/00; C22C38/58; F16L9/00; B21B3/02; B21B21/00; (IPC1-7): C22C38/00; C22C38/58
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Masaya Nishiyama
Takashi Ishida
Tetsuji Koga
Masaya Nishiyama