万能轧钢机的方式按结构分，首要可分为四种，即沉默式、UD 预应力式、SC 衔接板三式和短应力线式轧机。

Universal steel rolling mills can be classified into four types based on their structure, namely silent type, UD prestressed type, SC connecting plate type and short stress line type rolling mills.

万能轧机的长处是：（1）由四个轧辊所组成的杂乱断面孔型，能够使轧件断面上的各组成部分一起遭到紧缩，因此轧件变形较均匀，轧件断面上各部分的速度差较小；轧件的内应力小；（2）可用小直径的轧辊轧大号钢材，例如可轧出腿部较宽、腰部较高的工字钢，而且可轧制腿内侧无斜度的H型钢； （3）腿部和腰部的压下量能够独自调整，简化了轧机的调整作业，与惯例轧法比较，可使产值进步1.8倍，作业率进步10%，轧辊耗费降低20%。

The advantages of universal rolling mills are: (1) The complex cross-sectional hole shape composed of four rolls can cause all the components on the cross-section of the rolled piece to be compressed simultaneously, so the deformation of the rolled piece is relatively uniform and the speed difference among the various parts on the cross-section of the rolled piece is small; The internal stress of the rolled piece is small. (2) Small-diameter rolls can be used to roll large-sized steel materials. For instance, I-beams with wider legs and higher waivers can be rolled, and H-beams with no slope on the inner side of the legs can also be rolled. (3) The reduction of the legs and waist can be adjusted independently, simplifying the adjustment operation of the rolling mill. Compared with the conventional rolling method, it can increase the output value by 1.8 times, improve the operation rate by 10%, and reduce the consumption of rolls by 20%.