Tianhe Petroleum Machinery Co., Ltd is a modinized medium-scale enterprice specialied in production of oil and gas tools. Established in 1973, it has been a standardized co., Itd. Our company has registered captial 50million RMB, covering 150000 squaremeters. Main products are drill collar, spiral drill collar, heavy weight drill pipe, kelly, hydraulic jar tester, hydraulic bucking unit, fishing tools and workover tools. Our company is the high technology enterprise of heilongjiang province and has been the class I network supplier and member of council of CNPC;industrial association menber of council of CNPC and SINOPEC;assigned supplier of CNOOC; the member of CNPC �??�?�¢??ENERGYAHEAD�??�?�¢??. We have obtained the API Spec7, Spec7-1, 5CT, 6D monogram right and certificate of ISO 9001:2000. Nowsday, our products have been well sold to leading oilfields of China and exported to USA, Canada, Russia, India, Middle east and so *****