Excuse me, what's the difference between two rollers, three rollers and four rollers? How to adjust the roundness after it is rolled into a cylinder?
The biggest difference is that the number of book rollers is different, and the second roller is used for mass production of small pieces. Three-roll plate bending machine and four-roll plate bending machine have different main working modes. The efficiency of four-bar plate bender is higher than that of three-high plate bender, and it is possible to realize automatic rolling.
If the roundness is not up to standard, it can be corrected after welding.