... alloy steel E.X.G.S) OD :2-3/8,2-7/8,3-1/2,4,4-1/2,5(inch ... :drilling pipeStandard: API 7 and API spec. 5DSpecification: O.D 2 3/8, 3 1/2, 4, 4 1/2, 5, ... : E75, X95, G105, S135Length:R1: 5.490-6.71R2: 8.23-9.71R3: 11.58-13.72Internal Coating: TK34, TC2000 ... , 200XT, &300XT, BOTN3000, ARMACORMApplication: using for oil well drillingO.D.GradeWall ThicknessUpset Ends,For welded-on Tool JointsTool Joint Drill ...