... is mainly for the production of small and medium-sized iron castings; the maximum weight of the products can be up ... is 100G. Currently the cast iron pieces can be with ductile iron or gray iron.THE INTRODUCTION OF MY COMPANY: Hebei Hongye Machinery ... products, etc which are widely used in .the fields of petro-chemical, steel & iron, electric power, medicine, food, automobiles, environment protection, ...