... " 2) Steel Grade: E75, X95, G105, S135 3) Drill pipe are made according to API 1) OD: 2 7/8", 3 1 ... " 2) Steel Grade: E75, X95, G105, S135 3) Drill pipe are made according to APIDrill pipe Standard: API SPEC 7 & API 5D ... ), R2 (8.23m-9.14m), R3 (11.58m-13.72m) Drill pipe Standard: API SPEC 7 & API 5D or under the ... (8.23m-9.14m), R3 (11.58m-13.72m) S135 drill pipe