Drill Pipe

Products: drill pipe, heavy weight drill pipe and drill collar.

Size: 2-3/8 in–6-5/8 in.

Standard: API 5DP.

Grade: E75, X95, G105, S135, SS-105.
Length: Range 1, Range 2 or Range3.

Upset of Drill Pipe

Internal-External Upset   IEU

Details of manufacturing

Tool joints are inertia welded to the tubes with computer-monitored precision. Concentricity is carefully monitored and controlled, and the parameters of each weld are electronically recorded, and traceable to each joint.

After removal of weld flash, the weld area is austenitized, quenched, and tempered to achieve the required mechanical properties. Heat treat cycles for each weld are compared to specific parameters and recorded for traceability.

After all steps and machine marks are polished from the OD and ID area, hardness testing, ultrasonic testing, and wet magnetic particle inspections are used to verify the integrity of each weld zone.

Drill Pipe Dimensional Range and Performance Properties

Drill pipe is a threaded steel pipe used to connect the surface equipment of the drilling rig to the bottom hole assembly. The purpose of the drill pipe is to transport the drilling mud to the drill bit and together with the drill bit to raise, lower or rotate the bottom hole device. Drill pipe must withstand high internal and external pressure, torsion, bending and vibration. It is designed for repeated use in oil and gas drilling and workover operations.