MS fittings, also known as mild steel fittings, are components used in piping systems made from mild steel. They are designed to connect, redirect, and regulate the flow of fluids in various applications, including plumbing, HVAC (heating, ventilation, and air conditioning), industrial processes, and construction. These fittings come in a wide range of shapes and configurations to suit different piping requirements, including elbows, tees, couplings, unions, reducers, and flanges. They are crucial for constructing and maintaining piping systems, providing secure and leak-proof connections between mild steel pipes.