... of optimum design theory, into which advanced tech HY128 Ring Spinning Frame is a new type Spinning Frame developed on ... ,480,456,444,420,408,396,384,372,360Dia. of ring (mm)38, 42, 45Bobbin length (mm)205, 230Spinnable ... )97.2-5.8 (6-100 Ne) Twist (T/m)400-1950Twist directionZ or SDraft range10-50Draft mode3-line rollers ... of spindle12000-20000 rpmRoving package (mm)Ø150*400 HY128 Ring Spinning Frame