Our company since its inception, always regards product quality as enterprise life, continuously improve production technology, improve product quality and continuously strengthen enterprise total quality management, in strict accordance with the national standard ISO 9001:2000 for Short Threaded Coupling, Sucker Rod Coupling, Api Tubing , Coupling Supplier ,Grade J55 Casing Coupling. Adhering to the business philosophy of 'customer first, forge ahead', we sincerely welcome clients from at home and abroad to cooperate with us. The product will supply to all over the world, such as Europe, America, Australia,French, Gabon,Czech Republic, America.We follow superior mechanism to process these products that ensure optimum durability and reliability of the products. We follow latest effective washing and straightening processes that allow us to offer unmatched quality of products for our clients. We continually strive for perfection and all our efforts are directed towards attaining complete client satisfaction.