... . 4-10mm Standard: API SPEC 5D, API SPEC 7 Grade: E75, X95, G105, S135 drill pipe: O.D.46-168mm,W ... . 4-10mm, Standard: API SPEC 5D, API SPEC 7 ,Grade: E75, X95, G105, S135. Drill Pipe Standards:API SPEC 5D, API ... SPEC 7 Grade:E75, X95, G105, S135.Other steel grade is also availalbe as ...