PTC (also known as PTC Alliance, formerly known as PTC Group Holdings) is a company that provides metal tubular, bar, and complementary product solutions. It offers drawn-over-mandrel tubing (DOM), electrical resistance welded tubing (ERW), cold-drawn seamless tubing (CDS), boiler tubing, chrome-plated products, etc. The company serves the automotive, construction, agriculture, appliance, and other sectors.