--the rig is applicable to 2000-3200m depth for oil well 127mm drilling pipe, and 2500-4000m drilling depth with 114mm drilling pipe

-- AC-SCR-DC power transmission system is applied for ZJ40D(AC-DC-AC FOR ZJ40DB)@Single drum shaft drawworks), rotary table and mud pumps, users can acquire expected drilling performance,

--grooved drawworks drum with air clutch to shift speed;
--disc brake is applied as main hydraulic and auxiliary brake is eddy current brake or Eaton brake

--Rotary table is driven independently or compoundly

--substructure type of sling shot allows mast and floor equipment installed at low height level then raised integrally utilizing drawworks power or individual hydraulic winches devices

--major components of rig conform to API specifications and are allowed to use API monogram.