The New Type Coal Drill Pipe

NOSpecification(mm)TorqueConnectionScrew diaTube    diaLengthconnector1Ø26Ø16500-3000M16*1.5100-150Thread2Ø28Ø16-18500-3000F12/M18*1.5100-150Foursquare      Thread3Ø30Ø16-18500-3000F12/M18*1.5100-150Foursquare      Thread4Ø32Ø18-22500-3000F12/M16*1.5100-250Foursquare      Thread5Ø38Ø21-22500-3000F14/Tr16100-350Foursquare      Thread6Ø40Ø21-22500-3000F14/Tr16100-350Foursquare      Thread7Ø42Ø21-22500-3000F14/Tr16100-350Foursquare      Thread8Ø45Ø25-27500-3000F18/Tr16100-450Foursquare      Thread9Ø55Ø25-27500-3000F18/Tr16100-450Foursquare      Thread10Ø65Ø25-27500-3000F24/Tr16100-450Foursquare      ThreadNote: We also can produce and design as per clients’ drawings/samples/requirements.On the basis of  original vintage twist coal drill pipe,Website:http://www.yikuangdrilling.com, the high quality steel and T type steel welded structure, the advanced prestressed winding welding manufacturing process and model coal drill pipe. New coal drill pipe has the advantages of  light weight (45% lighter than the old twist drill pipe), footage quickly,  small dust, vertical drilling down without leaving the cuttings, pore forming  analysis. The new coal drill rod and the drill head can be separated using the  tail, prolong the life. Spring pin or screw connection, convenient and quick.  The new coal drill pipe is divided into single screw blade, double helical  blade and water type and dry type.