联系人 Ms. linda
heping, tianjin, tianjin
At present, we have obtained manufacture license of special equipment in China, the approval certificate for ship voyage service station, the authentication of ISO***1:***0 guarantee system and the relevant certificate of API Spec **1/Spec 7/Spec *6C/Spec 5D. We are capable to produce anti-sour drill pipe, high torque drill pipe and etc., as well as regular API E*5, X*5, G**5 and S**5. The comprehensive productivity of drill pipe and drill collar has reached about *0, **0MT each year.
