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.
