... quality and service Product name: Drilling rigs for oil field 1.Oil drilling rigs manufacturer2.Approved API&ISO certificate3.Max Nominal ... brake.3. For Drilling rigs for oil field over 4000m in drilling depth, rig floor is in two levels which is "front high ... , casing at home and abroad. Until now, we have participated in oil projects in Indonesia, Kazakhstan, Yemen, Niger, Iran, India, and Africa, ...