... 5/8" 2. Grade:E,X,G,S 3. Standard: API 4. Upset:IU,EU,IEU 5. HB:Arnco100XT,150XT,300XT ... with API 5D, API SPEC 7 Standards. The material of drill pipe body are chosen by the 1&3 group of API 5D.(Group 1 ... -Grade E75; Group 3-Grade X95, G105, S135).The choice ... the customers requirements, and the tool joints are up to API SPEC7 Standards. drill pipe