Tianjin shitong mainly trades in all kinds of Seamless / Welded Steel Pipes and Tubes such as OCTG, Line Pipes, as well as many kinds of Specialty Tubes such as Boiler, Heat Exchanger, Mechanical, Square & Rectangular Tubes, Conduit Pipes, Stainless and Relevant Pipe Fittings and Valves under world standard of ASTM / ASME, API, DIN, JIS, supplying to USA, Canada, Europe and Southeast Asia, especially we have long-term good business cooperation with such as Toyota, Minmetals and Van Leeuwen, etc.