Every day around the world, HarbisonWalker International’s people and products stand up to the challenges and pressures of every job. And for 150 years, we’ve served virtually every industry that needs refractories products to do its job.We deliver one of the industry’s widest, deepest lines of refractory solutions. Our world-class refractory products perform to the highest degree. And by bringing intensity, reliability, and passion to work every day, we’re able to provide superior value to our customers and their businesses. Currently HWI is the United States’ largest producer of refractory products and a leader in alumina-silica and basic refractory products.