Tianjin Feilong Tube-making Plant Co., Ltd, is one of the national credit enterprise and famous enterprises in tianjin, belongs to the tianjin DaGangOu backbone enterprises, was founded in 1995, the existing 1000 employees, including 36 professional and technical personnel, senior title 8 people, the factory covers an area of 600 mu, building area of 50000 square meters, fixed assets of 140 million yuan. Existing 16 high-frequency welded pipe production line; Three hot galvanizing production line, 12 expansion pipe production line, with advanced testing equipment, chemical be slitting, rolling plate, pipe, tube expanding synthesis, hot DIP galvanized steel pipe company, can be an annual output of 426 tons of 20 mm - 426 mm weld pipe, galvanized pipe 160000 tons, 120000 tons of cold rolled strips. This company produces the "cow" brand welded pipe, hot DIP galvanized marketing throughout the country, exported to USA, Canada, Australia, Britain, Germany, Austria, Belgium, Italy, Africa, Asia. South America for a total of more than 30 countries and regions. Enterprise 2009 welded pipe 500000 tons, realize the output value of 2.4 billion yuan; Export all kinds of steel pipe 60000 tons, the foreign exchange earning $40 million.

Tianjin dragon controls Co., Ltd. Has and taigang, ChengGang, LingGang, tangsteel, xingtai, tangshan delong kingdom feng, day, tianjin steel rolling, JiLinJian dragon, huludao zinc plant, tianjin yuhua, chifeng XinYe, tianjin "XinYe, zinc and so on more than 20 steel company to establish long-term stable marketing relationship. In July 2001 obtain the ISO9001 certification, enterprises import and export qualification certificate in 200, in 2006 achieved CE certification, in 2009 obtain API certification of United States, production of API5L, 5 CT products.