Mainly for and H-Beam steel straightening.flange girth steel may deform if welding seam shrink. this equlp-
ment currently is better for flange firth steel straightening. working principle bases on upper roller and driving r
oller working together. when fhange girth steel on roller moving to operation area will be straighetened by force.
the preset force is stronger than steel yield stress. and the elastic recovery coefficiency is so small that the steel
will be straightened.