Houston Unlimited was founded in 1984, we are the oldest Liquid Salt Bath Nitriding facility in Texas. Currently offering Liquid Salt Bath Nitriding (Melonite QPQ), Xylan coatings, MOS2 coatings (Molybdenum Disulfide) and Phosphate coatings. Average lead time is 5-7 business days however, in order to meet customer due dates up to 24 hour expediting is available in most cases. Houston Unlimited Inc. is pround to announce we are ISO 9001:2008 certified! Come see why we are the leaders in salt bath nitriding!