Light welded roller carriers are of concise &compact structure design,small volume and light weight,which are able to work under various environments;It can adapt to the usage of cylindrical,column and other workpieces with the weight below 3000KG and diameter of 20-1500mm and its rotating speed is stepless adjustable within 80-1600mm/min,which is easy and flexible to operate and is convenient to installand cary, with high practicability.