We depend on sturdy technical force and continually create sophisticated technologies to meet the demand of Api 5dp S135, Mining Drill Pipe , Api 5ct Casing And Tubing , Firm 28 Inch Carbon Steel Pipe ,Carbon Seamless Steel Tube . We have now ISO 9001 Certification and qualified this item .in excess of 16 years experiences in manufacturing and designing, so our items featured with best quality and competitive selling price. Welcome cooperation with us! The product will supply to all over the world, such as Europe, America, Australia,Switzerland , Egypt ,Peru , European .Our company has abundant strength and possesses a steady and perfect sales network system. We wish we could establish sound business relationships with all customers from at home and abroad on the basis of mutual benefits.