Oil and gas exploration has never been more challenging than it is today, more and more oil and gas wells are deeper and deeper with geopolitical complexities and containing high CO2, H2S etc., which is challenging the conventional OCTG material. Jiuli offers superior high nickel alloy OCTG withstanding high pressure, high corrosion and comprehensive environment for many oil and gas companies in the world and developed TDJ-G3 casing tubing with proven service in the field.  　   

    With excellent corrosion resistance, Jiuli Casing Tubing has been successfully supplied to Sinopec Yuanba and Puguang oil and gas fields, with both high H2S and CO2 content. chagnfeng adopts the latest process of hot extrusion and cold pilgering (drawing) to produce TDJ-028 and TDJ-G3 Casing Tubing with mechanical and chemical properties according to ISO13680. Jiuli Casing Tubing has been proved to work under high pressure and high corrosive environment after years' service in Puguang and Yuanba oil and gas fields.