Profile: Pioneer Service Inc. specializes in manufacturing CNC turned parts and screw machine products. We are an ISO 9001:2008 certified company. We are offering centerless grinding services. Our products are made using steel, stainless steel, tool steel, aluminum, brass and nickel bearing alloys. We also offer in-feed centerless grinding for parts that typically have more complex profiles along their lengths. In-feed grinding differs from through-feed grinding in that the part is plunged radially by the grinding wheel rather than being fed axially. In-feed grinding is typically faster and more economical than multi-step grinding processes.