... : API 7 and API spec. 5D O.D 2 3/8, 3 1/2, 4, 4 1/2, 5, 5 1/2 ... ,6 5/8 Steel Grade: E75, X95, G105, S135 drill pipeapi drill pipe:well drill pipeAPI 7 ... and API ... spec. 5DSpecification: O.D 2 3/8, 3 1/2, 4, 4 1/2, 5, 5 1 ... Ends,For welded-on Tool JointsTool Jointinmminmm3 1/288.9E.X.G.S.0.2546. ...