This machine is designed to seam the rectangular ducts, square ducts and plain sheets. The machine can make both rectangular and square form clamps. The clamps is formed in three stages. Firsty it is rollformed to both sheets at the front bending. Secondly, conjunction of the sheets is obtained an lastythe clamp is made. Besides silent operation of the machine, it is easy to use and economical with its output and energy saving features. Among the similar machines with its clamp (seaming) type it is tighter and has less air leakage it has got special roller lits, which are highly resistant to friction and break downs.