1,Name:drill pipe equipment 2,Length:R1,R2,R3 3,OD: from 50mm to 127mm 4,Grade:G105,R780,S135,E75,X95 Shijiazhuang LongWay Petroleum Drill Tools Co., Ltd is a company that especially manufactures kinds of petroleum drill pipes and joints.1,Name: drill pipe equipment2,Length:R1,R2,R33,OD: from 50mm to 127mm4,Grade:G105,R780,S135,E75,X95 Standard: ISO and API SPEC 5DOD: from 50mm to 127mmGrade:G105 ...