... Well Drill Pipe API&ISO9000 certification. 20 years experience in drill bit manufacture and supply. API Water Well Drill Pipe We supply ... , X, G, S EU or IU 4-1/2 20. 00 4-1/2 E, X, G, S EU ... , G, S IU and EU 6-5/8 25. 20 6-5/8 E, X, G, S IU and ... 72mUsage: As the major part of drill stem, drill pipe connected with Kelly and drill collar, which is used to ... bit, and drill collar. API Water Well Drill Pipe