LANCE PIPE

摘要

PROBLEM TO BE SOLVED: To provide a lance pipe showing a superior operability and mainly applied in a torpedo.SOLUTION: A short nozzle pipe 13 is arranged to be inclined at a side surface of an extremity end of a main pipe 11 and that portion is buried inside an expanded part 22 of a refractory layer 2. A maximum diameter length of the expanded part 22 is set to be less than three times of a diameter of a rod-like part 21 of the refractory layer 2 covering almost of all the main pipe 11 and at the same time a rate between a thickness of the refractory layer at a side of nozzle projecting direction at the expanded part 22 and a thickness of the refractory layer at a rear back direction side is 1.1 to 4.5 to facilitate an inserting operation of the torpedo into an opening.SELECTED DRAWING: Figure 1