Locking machine is the most basic production machinery, air duct can be achieved by simple adjustment of a machine can complete the joint seams, single flat seams, vertical seams, the C-type cuttings, and elbow seams. Plane pressure bearing locking machine produced by our company are used to avoid the side plate wear, extend equipment life, and to ensure the seams forming stable. In addition, I have high with seams, machine, wheel material of GCr15.