Magna Electro Castings Ltd manufactures Ductile Iron Piston Plug. Magna Electro Castings Ltd is an ISO 9001: 2000 and ISO 9002 certified company offering a wide range of Ductile Iron And Gray Iron casting and machined components. The Ductile Iron Piston Plug is made from iron of 65/45/12 grades and is suitable for use as Refrigeration castings. The Ductile Iron Piston Plug comes in rough finish in the weight of 4.50 Kg for various industrial applications.