This machine is one of the auxiliary devices of producing the metal spiral gasket. It is used for shearing the nonmetal steel strip with a certain width and thickness. The parameter of the width of the nonmetal steel strip, which is important to guarantee the basic quality craft of the spiral gasket, matches shape steel strip. This machine's turning blade width parameter is suitable for producing 4.5 mm-thick metal spiral gasket. Other orders of the turning blades are needed to be made if producing 3.2mm-thick or 6.5 mm-thick spiral gaskets.