Title:
STEEL TUBE COLUMN WITH DIAPHRAGM
Document Type and Number:
Japanese Patent JP3232917
Kind Code:
B2
Abstract:
PURPOSE: To surely execute the welding to fix a diaphragm to a steel tube so as to reduce the gap between a diaphragm and steel tube to a minimum.
CONSTITUTION: A steel tube 1 fitted with a diaphragm 3 is formed so that a steel plate is formed to cylindrical shape and the outside surface side is at least subjected to submerged welding in the longitudinal direction and a height of the outside weld zone is 1-0.5mm from the outer surface of base metal.
Inventors:
Toshiaki Miyao
Hiroshi Naganawa
Mikio Sawa
Hiroshi Naganawa
Mikio Sawa
Application Number:
JP27351194A
Publication Date:
November 26, 2001
Filing Date:
November 08, 1994
Export Citation:
Assignee:
Nippon Steel Tube Co., Ltd.
International Classes:
E04B1/24; B23K9/00; B23K9/032; B23K33/00; E04C3/32; (IPC1-7): B23K9/032; B23K9/00; B23K33/00; E04B1/24; E04C3/32
Domestic Patent References:
| JP6101302A | ||||
| JP5131316A | ||||
| JP5311746A | ||||
| JP5835373Y2 |
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)
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