... 7/8", 3 1/2", 4", 4 1/2", 5" 5-1/2" 2) Steel Grade: E75, X95, G105, S135 3) ... made according to API 1) OD: 2 7/8", 3 1/2", 4", 4 1/2", 5" 5-1/2" 2) Steel ... according to APIDrill pipe Standard: API SPEC 7 & API 5D or under the customers needs.OD Range: 2-3/8 ... 13.72m) Drill pipe Standard: API SPEC 7 & API 5D or under the customers needs.OD Range: 2-3/8 ... .23m-9.14m), R3 (11.58m-13.72m) API 5D drill pipe