Full-bore Tee wholesale, sales, factory price, which is the best? [Nantong Helu Building Materials Technology Co., Ltd.] Tee, also known as pipe fitting Tee or Tee pipe fitting, Tee connector, etc., is mainly used to change the fluid direction and is applied at the branching point of the main pipeline. It can be categorized by pipe diameter. Generally made of carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, asphalt, PVC, etc.