Drill Pipe 1.OD:3 1/2,4",4 1/2",5",5 1/2" 2.Steel grade: E75,X95,G105,S135 3.MOQ:25 tons ... requirements of Group 1 & Group 3 of API SPEC 5D. C. Drill pipe joints at the same level comply with the provisions under the ... Standard API SPEC 7. Drill Pipe Feature: A. High precision in size and shape B ...