Hardline Heat Treating specializes in a variety of heat treating services including Austempering, Marquenching, vacuum high pressure quenching, and annealing, etc. Our markets consist of medical, automotive, military, firearms, and manufacturing. Our niche in the marketplace lies within our ability to handle small parts, as well as large parts, while consistently delivering on time, and our commitment to the customer's individual needs is second to none. Conveniently located in Southbridge, Massachusetts, Hardline Heat Treating is central to all major cities in the Northeast, making it an easy commute to our facilities, and well worth the time.