Founded in 2007, Tianjin Zhentong Yuan Pipe Plant Co., Ltd. is an integrated company with producing, processing, operating together. We specialize in producing different kinds of steel pipe, for example Seamless (SMLS) Steel Pipes, Straight-seam Steel Pipes, Thermal Expansion Steel Pipe, Spiral Welded Steel Pipes, Square and Rectangular Steel Pipes, Galvanized Steel Pipes, API Steel Pipeand, Petroleum Casing Steel Pipe, Line Pipe . We have our own factory. We own 3 production line and advanced production equipment and sophisticated testing instruments. There are 6 people working for Quality Control and 4 people woking in Research and Development Department in our company. We are not only text the quility by ourselves, but also invite the third party to text our steel pipe, for example China Quality Inspection Bureau and Bureau Veritas. We also handing the special testing reports according