... paper, through the coil bending machine, and the initial processing of forming the same time, the material bent in the required curvature, and then the crimping machine ... crimping, the seams are very tight, and the silo is of a good sealing performance and can be used as a fumingating silo ... 3.2 Small area occcupancy,Height and diameter are optional in a wide range. The distance between two silos can ...