Taiyuan Mining Machinery Group Co., Ltd. (TMM Group) is one of the biggest manufacturers in the fields of metallurgy equipment, steel & ductile iron castings, welding products and forgings in China. TMM Group was established in 1925 and it is a large state-owned enterprises. TMM Group has more than 2,000 employees that including 400 senior technical engineers. In 2011, the sales turnover of TMM Group exceeds one billion US Dollars. Taiyuan Mining Machinery Import & Export Co., Ltd. is fully-invested subsidiary company of TMM Group to deal with all business related to export and import of the whole group. Since 2005 after reshuffle, TMM Group has been a combined enterprise of Taiyuan Heavy Machinery Group.TMM Group mainly manufactures metallurgy equipment, and welding, forging and steel & ductile iron castings. The main metallurgy equipment includes High Speed Wire Rod Rolling Mills, Bar Rolling Mills, Spiral Welded Pipe Mills, ERW Mills, Hydrostatic Testers, Chamfer Machines, Slitting Lines, Shear Lines as well as various spare parts and accessories. TMM Group has supplied many complete sets of Rolling Mills, Spiral Welded Pipe Mills and ERW Mills to America, Indonesia, India, the Philippines, Turkey, Singapore, Vietnam and other Southeast Asian countries. At the same time, TMM Group also has supplied a lot of OEM spare parts and accessories to American, German and other European markets with a total value of more than ten million US dollars. TMM Group has branch factories to produce products of steel castings, investment castings, ductile iron castings, welding products and forgings. TMM Group's steel casting branch factory produces steel castings with range from 10kg to 10000kg as per clients' drawings and technical requirements. We have an annual capacity of 30 thousand tons of steel castings and insist on strict quality control system. Both ISO9001 and American ABS certificates have been awarded. The main products are castings used in heav