Cangzhou Tianyi Steel Pipe Co.,Ltd is a professional integrated enterprise of R&D, production, sales and exporting, with its own right to import and export, is the market network supplying member of China National Petroleum Corporation (CNPC). Founded in 2001, our company is located in "China's steel pipe manufacturing base", the Industrial Development Zone, the Yanshan county, Cangzhou City, Hebei Province. now covers an area of 80000 square meters and is a large comprehensive pipe manufacturer in North China.. We established a complete and effective quality management and assurance system. In February, 2001, the company obtained the certificate of ISO9001 Quality System Authentification.Our products mainly include the steel pipe series: seamless steel pipe, straight welded steel pipe, galvanized steel pipe, ERW steel pipe, SAW spiral steel pipe, heat expanded steel pipe, large diameter volume welded steel pipe, GB steel pipe, ASTM /ASME/SPI steel pipe, JIS steel pipe, SAW joint straight pipe; Standards and Material include: 10#, 20#, 45#, Q235B, Q345B, ASTM A106B, ASTM A53B, API 5L GR B/X42/X52, JIS G3454 STPG370, JIS G3452 SGP, JIS G3444 STK400 and so on.