... 1.Oil drilling rig manufacturer since 2000 2.API 4F,7K & QHSE 3.Nominal drilling depth ... , crown block, rotary table, drawworks, travelling block, mud pump, hook, top drive etc. 3. Why choose Tefico? ... by China big state-owned oilfield company. API-4F and API-7K has been authorized. 4. Technical Parameters ... table opening size444.5mmMud tank 160mPP3Mud pump power and Qty. 1000hp×25. Tefico pictures