Full-rotation crawler CFA drilling rigs wakilci ne na fasaha mai mahimmanci a cikin gina kafa mai zurfi na zamani, wanda ke ba damar saurin da kuma ingantaccen gina cast-in-place piled foundations a kan yanayin kasa mai canzawa. CFA (Continuous Flight Auger) drilling aiki ne ta hanyar juyawa na continuous auger wanda ke ci gaba a kan kasa yayin da concrete an yi ta ta hanyar auger na hollow stem, wanda ke kirkiran wani pile na inganci a cikin wata hanya. Full-rotation capability na waɗannan rigs ya ba damar drilling head ya juya ci gaba a lokacin aiwatar da aikin, wanda ke ba damar drilling performance na inganci da kuma rage lokacin aiwatarwa idan aka kwatanta da limited-rotation systems. An yi wa waɗannan rigs crawler-tracked chassis, wanda ke ba damar mobility na inganci da ground bearing characteristics a kan kasa mai laushi ko mara zurfi inda kayan aikin wheeled zai yi yaɗuwa, wanda ke yi wa rigs na inganci don ayyukan birane masu zubewa, brownfield locations, da kuma ayyukan muhalli masu mahimmanci.
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