Grade: 22 OD: 12mm Coating: polishing Established in 1999, is located in Tianjin Beichen District, near one of the biggest steel pipe manufacturing based in China-Daqiuzhuang. Our total assets are more than RMB 1,000,000. We are the biggest petrifaction groups and so on.We supply steels for many years. We are engaged in structure tubes, fluid pipes, boiler pipes, high pressure pipes, steel plate, ...