We're a Sino-German joint venture, completely equipped for manufacturing and exporting of:-Drill Collar, Non-Magnetic Drill Collars, Spiral Drill Collar, Spiral Drill Collar With Elevator & Slip Groove;-Integral Heavy Weight Drill Pipe, Integral Spiral Heavy Weight Drill Pipe, Kellys;-WZ Type Integral straight blade stabilizer, Integral spiral blade stabilizer, Replaceable sleeve spiral stabilizer;-Tool Joint, Cross-over sub, Drill tool lifting sub; etc.All above product ranges we produce in strict technical control with German managment standard. We have got ISO9001:2000 quality system certificate and API (American Petroleum Institute) spec7-1 system ***** specification and parameters of our excellent products are avaliable on your request.
