1. Resin Sand Iron Castings. 2. Grey Iron Castings. 3. Ductile Iron Castings. 4. The weight ranges from 0.1KG to 300000KGs. Resin Sand Iron Castings.By resin sand molding, Grey Iron 200,250,300, Ductile Nodular Iron 400,450,500,600, with or without machining, mainly valve bodies, pump housing, machining parts, 30T/pcs as max unit weigt.Produced as per customers' drawings or designs.100% ...