The API composite thread protector is made of a threaded low density or high-density polyethylene bumper, which absorbs the impact shocks and a steel shell rolled over the front edge, which insures a superior protection against hazard. The composite thread protector is available either in the open end or closed end version, liftable or non-liftable. The liftable protectors allow moving of the tubes using hooking devices and in the same time keep the tube thread and coating undamaged. The closed end protectors may have an optional vent hole designed to keep the inner pressure equal to the outer pressure. The vent hole may also have a filter, which prevents the intrusion of the foreign particles. The composite design of the composite thread protector (steel shell and high density polyethylene bumper) insures the protector integrity within the temperature range given by the API 5CT standard (-46 C·66 C). Their design allows easy setting and removing using a tube wrench. CASING/TUBING/DRILL PIPE/DRILL COLLAR THREAD PROTECTOR 1) Material: steel/plastic/steel&plastic 2) Size: 2 3/8"--- 20" 3) Thread type: STC, LTC, BTC and other thread according with customized