Ladder squeezing machine: model JYJ Squeezing machine (model:JYJ) to processing aluminium ladder (also called swaging or corrugation), suitable to swaging "D"-shape rung and "O"-shape rung, those kinds of rung can produce single section ladder and extension ladder,but can not joint a folding ladder.It is most important that ladder rung match up profile, generally the follwoing matches ladder rung with profile:
