Il-kwalità tal-formazzjoni ratba tat-tricone, manifattur-LANGFANG UQIER

9 1/4” bit b’ħuġġa minn azzar bi 3 imqaddifin

8 5/8” bit b’ħuġġa minn azzar bi 3 imqaddifin

12 1/4” TRICONE BIT IADC114/117/127/217/317

IADC114/117/127/217/317

16” PDC bit bi 5 imqaddif

17 1/2” bit PDC bi 5 imqaddif

17 1/2” TRICONE BIT IADC114/117/127/217/317

IADC114/117/127/217/317