PURPOSE: To improve the inside surface quality of a steel tube product by radially injecting high pressurized water from the top of a reeling plug onto the tube inside surface to cool the surface and to remove scales.
CONSTITUTION: As for a reeling method finishing the outside and inside surfaces of a tube stock by use of a reeler roll 1 and a reller plug 2, a cap is fitted into the top opening of the hollow plug 2 and plural injection holes 4 are drilled in the end face periphery at an elevation angle of about 30° to the inside surface of a tube stock 7. During reeling, a high pressurized water pipe 6 is connected to the plug 2 and a required high pressurized water is injected onto the inside surface of the tube 7. Thus, reeling is performed with the water injected onto the inside surface of the tube 7 to remove scales on the inside surface and to cool the tube 7. Therefore, quality of the inside surface of a tube product is improved by improving the inside surface state caused by scale lap during reeling.
INOUE MAKOTO
ONEDA MASAMI
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