We will devote ourselves to providing our esteemed customers with the most enthusiastically thoughtful services for Aisi 4140 Seamless Tube, Gas Line Pipe, Api Steel Pipe, Cold Rolled Tube,25x25 Steel Tube. If possible, be sure to send your needs with a detailed list including the style/item and quantity you require. We will then deliver our greatest price ranges to you. The product will supply to all over the world, such as Europe, America, Australia,Barbados, Boston,Bolivia, Serbia.With strong technical strength and advanced production equipment, and SMS people purposefully , professional, 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.