With our leading technology also as our spirit of innovation,mutual cooperation, benefits and advancement, we'll build a prosperous future together with your esteemed organization for 3 1/2″ Seamless Oil Casing, Carbon Steel Boiler Tube , Welded Boiler Steel Tubes , Alloy Steel Boiler Pipe ,Carbon Seamless Steel Tube . We, with fantastic passion and faithfulness, are willing to offer you with best services and striding forward with you to make a bright foreseeable future. The product will supply to all over the world, such as Europe, America, Australia,Bangkok , America ,Lesotho , Angola .With strong technical strength and advanced production equipment, and SMS people purposefully , qualified, dedicated spirit of enterprise. Enterprises took the lead through the ISO 9001:2008 international quality management system certification, CE certification EU ; CCC.SGS.CQC other related product certification. We look forward to reactivating our company connection.