PURPOSE: To prevent generation of improper wall thickness and to obtain a metal tube with good accuracy by drawing the tube by setting a face angle of a reeling part and a face angle of an outlet side part to a pass line of plural cross helical rolls within a limited angle range, respectively.

CONSTITUTION: Improper wall thicknesses with sharp unevenness are not generated on a metal tube and a metal tube with good dimensional accuracy is obtained by drawing the tube by use of cross helical rolls 1A, 1B because all parts of the peripheral surface of a hollow shell H is brought into contact with a reeling part 12 at one or more times by forming a face angle αR of the reeling part 12 to a pass line P of the rolls 1A, 1B to be in the range of 0°<αR≤0.5° and forming a face angle αL of an outlet side part 13 to be in the range of 2.0°≤αL≤3.0°. A part where a radius of the rolls 1A, 1B smoothly changed toward axial lines 1a, 1b of the rolls 1A, 1B is formed between the reeling part 12 and the outlet side part 13 of both the rolls 1A, 1B, so that the metal tube drawn by the rolls 1A, 1B has smooth edge mark wall thickness steps on the outside and inside surfaces.