Our company's drill rods comply with the provisions under the Standards API SPEC 5D and API SPEC7. The grade of steel for the drill pipe will be determined according to the requirements of Group 1 and Group 3 of API SPEC 5D.
(i.e.: Group 1--Grade E; Group 3--Grade X-95, Grade -G-105 and Grade -S-135)
As per requirements of customers, drill pipe joints at the same level will be provided, and manufactured drill pipe joints will comply with the provisions under the Standard API SPEC 7.