Our enterprise since its inception, constantly regards product good quality as organization life, constantly improve production technology, strengthen merchandise high quality and continuously strengthen enterprise total good quality administration, in strict accordance with all the national standard ISO 9001:2000 for Steel Rectangular Tube, Structure Project Spiral Welded Steel Pipe, 150x150 Steel Square Pipe , Rectangular Steel Tube,Black Square Tube . Thanks for taking your worthwhile time to go to us and stay up for have a nice cooperation along with you. The product will supply to all over the world, such as Europe, America, Australia,Angola, Colombia,Malaysia, Munich.Our Company has professional engineers and technical staff to answer your questions about maintenance problems, some common failure. Our product quality assurance, price concessions, any questions about the products, Please feel free to contact us.