Features: --The rig is applicable to 2800-4500m rig123.net' target='_blank'>drilling depth for oil well with 127mm drilling pipe, and 3500-5000m drilling depth with 114mm drilling pipe. --Step-less speed control to draw works, rotary table and mud pumps --Rotary table is driven independently or compound --Grooved draw works drum with air clutch to shift speed --Substructure type of sling shot allows mast and floor equipment installed at low height level --Major components of rig conform to API specifications and are allowed to use API monogram Technical specification