1.SL-NOV copy, 10years OEM factory 2.API 7K,8Q,,,, 3.3-5months delivery 4.In install at site,Warranty worldwide techonlogy from USA China factory prices The world's top level of the manufacturing process Rig ModelZJ50DZJ70DZJ90DNominal drilling depth, 127mm(5)DP, m500070009000Max. hook load, kN(t)315031545004505850550dill line system of travelling system6×76×76×7Dia. Of drill line,mm353838Max. ...