Yantai Yunsheng Petroleum Machine Accessories Co., Ltd

Yantai Yunsheng Petroleum Machine Accessories Co., Ltd. Company Brief: Yunsheng Co.Ltd., founded in***7, is a professional manufaturer of API Spec *1B Sucker Rod Coupling , inclding Spray Metal coupling, class T coupling, SUB OD coupling, with various type of Full size, Slim Hole, Over Size, with Big Chamfer , with Wrench Flat, with Bidirectional Cambered Surface Protection .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 *0, **0 pcs .All of our couplings are excellent in Quality and reasonable in Price.The production & inspection are being done fully in accordance with API Spec *1B standard.