Shanxi Weigao Petroleum Drilling Tools CO.,LTD.is a company of manufacturing Square Kellys,Hexagonal Kellys,Drill Pipes,Drill Collars and other Drilling Tools professionally,with years’ manufacuring history.We have sophisticated production equipment, strict inspecting ways and strong technologr and have mastered the key technique nationalizing petroleum drilling tools.We have won ISO9001:2000,API Q1and API Spec 7-1
Website：http://www.sxweigao.net.cn