Yantai Yunsheng Petroleum Machine Accessory Co., Ltd

Yantai Yunsheng Petroleum Machine Accessories Co. Ltd., founded in 2005, is a professional manufacturer of API Spec 11B Sucker Rod Couplings, including Spray Metal coupling, class T coupling, Sub OD coupling, and the thread size are available at 5/8", 3/4", 7/8", 1", 1-1/8". Owning world top level equipments and technicians, the monthly production capacity is more than 60,000 pcs. All of our couplings are excellent in Quality and reasonable in Price, and the production & inspection are being done fully in accordance with API Spec11B standard.we have exported our couplings to America, Peru, Argentina, Kuwait, India, Indonesia, etc., and have established longterm cooperation with many of our customers both home and abroad, based on our good quality and Service. [Details]