API drill tube for drilling Grade:G105,E75,S135,X95,R780 OD:2-7/ ... has the reasonable price in the market. API drill tube for drillingGrade:G105,E75,S135,X95,R780OD:2-7/8'' to ... ;DZ50ODFrom 50mm to 127mmLengthR1; R2; R3UpsetEU; IU; IEU Usageoil exploitation; projects of mine blasting; water wells drilling; geothermal wells drilling; pipe ...