Our company since its inception, constantly regards product or service high quality as business life, continually improve creation technology, make improvements to product high-quality and consistently strengthen business total high-quality management, in strict accordance together with the national standard ISO 9001:2000 for Crossover Subs, China Coupling Manufacturer, P110 Coupling Manufacturer, Buttress Thread Casing Couplings,Seamless Steel Pipe. We aim at Ongoing system innovation, management innovation, elite innovation and market innovation, give full play to the overall advantages, and constantly improve service quality. The product will supply to all over the world, such as Europe, America, Australia,Italy, Rio de Janeiro,Munich, Munich.Our Company has qualified engineers and technical staff to answer your questions about maintenance problems, some common failure. Our product quality assurance, price concessions, any questions about the items, Be sure to feel free to contact us.