DH-SE2 machine is the second generation of DH-SE1 machine. Compared with the first generation, the gear can be dismantled. Therefore, the width of flat iron of 20mm and the thickness of 16mm can be rolled into the deducted card with tongue and groove. After cutting short, the deducted card is stamped on the welding joint with the product of deducted machine, so it can get the iron craft work more beautiful.