A barred tee is a specialized type of pipe fitting designed for use in pipeline systems where flow diversion or pigging operations are required. It features an internal bar structure (typically welded across the branch outlet) that prevents pipeline inspection tools (pigs) or debris from entering the branch line while allowing the main flow to pass through freely. Barred tees are typically manufactured from carbon steel, stainless steel, or alloy steel and are connected to the pipeline using butt welding, ensuring a strong, permanent, and leak-proof joint. They are commonly used in high-pressure applications in industries such as oil and gas, petrochemical, and subsea pipeline systems. The bars inside the tee are custom-designed to suit the pig size and flow requirements, without causing significant flow disruption or pressure drop.