Below is a list of Machined Graphite manufacturers from Smithfield, Pennsylvania. Graphite machining is able to produce a wide range of graphite and graphite composite products for use in industries including automotive, aerospace, chemical, metallurgical, nuclear and electronics. Graphite machining most commonly uses synthetic graphite materials to fabricate parts and products through extrusion and molding. Synthetic graphite is produced by adding tar pitch and petroleum coke to natural graphite during heat treatments.