Yantai Yunsheng Petroleum Machinery Accessories Co., Ltd. Fouded in 1997, is located in Shengquan Industrial Park of Yantai, Shandong. It is the first enterprise applying sucker rod joint alloy coating tarnish resistance technology in Yantai.
The main products of us is the both-way protection sucker rod coupling ,which are processed by applying corrosion & wear resistant coat on common coupling with special surface treatment technique. Both-way coupling can not only protect coupling but also oil pipe, preventing and reducing abrasion to them. Our both-way protection sucker rod shoulder wear resistant coupling has been contributing to petrol development in Daqing, Shengli and Liaohe for many years.