分析了冷拔内螺旋凸筋管内芯头的形式,提出了适合批量生产的内芯头形式——圆柱形螺旋直线内芯头。实验表明,用圆柱形螺旋直线内芯头可生产出符合设计要求的内螺旋凸筋管,并且内芯头的制造成本低,使用寿命长。 The form of the core in the cold drawn internal spiral ribbed tube was analyzed, and the type of the internal core, which is suitable for mass production, was proposed. Experiments show that the use of cylindrical helical linear inner core can produce in line with the design requirements of the spiral ribbed tube, and the inner core of low manufacturing costs, long service life.