*ZGL Group (Xinglong) located at Chinese biggest seamless steel pipe base,The Water City-- Liaocheng, Shandong. It occupies more than 800,000 square meters .*Funding in the year 2000, we have more than 11 years of production history of Carbon &Alloy Seamless Steel Pipes/Tubes.*In 2005 , we became the biggest Metal Group in North of China as a large-scale group corporation of integrating manufacturing / processing with trading.*Now our company has its own self-determination right for import and export.