TDC Heavy duty door hinges engineered for high-load, high-frequency use—ideal for commercial buildings, metal gates, and exterior doors. TDC Hardware offers stainless steel, ball bearing, and spring hinges built to resist rust, reduce friction, and deliver smooth, quiet performance. Trusted by Stanley, Hager, and Amazon buyers, our hinges are tested for strength, durability, and corrosion resistance. Fast U.S. shipping, OEM customization, and factory-direct pricing available.