Tianjin Wenyun Steel Pipe Co.,Ltd is an ISO- 9001-2000 certified company having been established for over 15 years. Today we have become one of the leading manufacturers and suppliers of carbon steel pipe serving a diverse range of building and construction industries. We specialize in producing welded carbon steel pipes(round pipe, square and rectangular pipe). Our pipes are used for fluid pipe, structure pipe, scaffolding pipe, EMT conduit pipe and sonic tube etc. All of our products are with good quality and reasonable price. We have our own trading company "Tianjin Wenyunxing Steel...