Dongying TIEREN Sucker Rod Co. Ltd is based on the second largest oilfield of China. Our productions are all permitted to use API license. Pony rods, polished rods, sinker bars and couplings of all specification are available according to API SPEC 11B. Since founded in 1958, depending on the Shengli oilfield, our company has unceasingly grown strong . Now we can produce 4 million meters each kind of sucker rod and 8, 000 tons antiseptic oil(set)tube every year. Our company is one of the enterprises which owns the best R&D and production capacity in the Chinese petroleum equipment manufacturing industry. The company mainly offers sucker rod and antiseptic oil(set) tube to the Chinese Shengli oilfield and China Daqing oilfield which are two pillars of the energy enterprises. Our Company produces various types of sucker rods and antiseptic oil(sets) tubes and other equipments, which are best-selling in Chinese oilfield.