�  Chang Gong Drill Pipes-cutting tool, drill bit

Chang Gong Drill Pipes-cutting tool, drill bit

Cutting Tool

Drill Bits

Oil Drill Bits

Mining Bits

Drill Collars

Drill Pipes

Drilling Tools

Bit Coals

About Chang Gong Carbon Steel Drill Pipe

Main feature:
A. The drill pipes comply with the provisions of  API SPEC 5D & API SPEC7.
B. The grade of steel are determined according to the requirements of Group 1 & Group 3 of API SPEC 5D.
C. Drill pipe joints at the same level comply with the provisions under the Standard API SPEC 7.
 
Drill Pipe Feature:
A. High precision in size and shape
B. Good low temperature toughness
C. Excellent comprehensive mechanical properties
D. High connection strength and sealability
E. Large inside diameter of tool joint
F. High  torque resistance
G. High fatigue strength and long fatigue life

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