GEOMETRY DEFINITION AND CALCULATION OF CROSS-SECTIONAL PARAMETERS WITH RESPECT TO COLD-DRAWN RIGHT ANGLED TRAPEZOIDAL STEEL TUBE

The author introduces the definition of the end points on the bottom line of the cold-drawn right-angled trapezoidal steel tube and calculation of relevant parameters such as the cross-section center etc. thereof in order to get an accurate measurement of the said tube’s geometry and to prevent the tube from cross-sectional torsion during the course of drawing.