Applicable to API standard. Model No:C912-365-192,C640-305-168,C640-365-144,C456-305-144-C456- 305-120,C320-256-144,C320-256-120,C228-173-100,C228-213-86,C160-173-8 6,C160-200-74,C114-143-74,C114-173-64,C80-119-64,C80-133-54,C80-119-54, C57-76-54,C57-109-48,C40-89-42,C40-76-48. Conventional traveling beam pumping unit