Tees are pipe fittings and pipe connectors used at the branch pipes of the main pipeline. Equal diameter tees are a type of tees. The diameters of the three pipes of equal diameter tees are equal.

Equal diameter tees are widely used in the construction and maintenance of projects in industries such as petrochemicals, oil and gas, liquefied gas, fertilizers, power plants, nuclear power, shipbuilding, papermaking, pharmaceuticals, food hygiene, and urban construction. The pressure requirements for this type of pipe fitting in industry are relatively high, and the maximum pressure can reach 600 kilograms. The water pipe pressure in life is relatively low, generally 16 kilograms.

The expression method is as follows: For equal diameter tees, for example, “T3” tee means an equal diameter tee with an outer diameter of 3 inches. For reducing tees, for example, “T4×4×3.5” means a reducing tee with the same diameter of four inches and a reducing diameter of 3.5 inches.