Trepanning Specialties has the in-house facilities and expertise to trepan or gundrill materials as common as stainless steel to the more "exotic" metals, such as Titanium, as well as non-metallic materials, such as wood and plastics, to make hollow round bars. Utilizing trepanning, gun drilling, BTA Systems, and boring, Trepanning Specialties can meet your every requirement. Recently, we have added larger saw cutting capabilities and more delivery trucks to become your one stop shop for solid bar conversions, hollow bar, and all alloys. Email us for a quote today! trepanspec@yahoo.com Trepanning Specialties Inc is a machinery company based out of 16201 Illinois Ave, Paramount, California, United States.