1. Core OCTG Product Range

A. Casing & Tubing

• Casing: API/ISO-certified, high-collapse resistance for wellbore integrity.

  • Grades: J55, K55, N80, L80, P110, Q125

  • Sizes: 4.5″ to 20″ (Customizable for sour gas/HPHT wells)

• Tubing: Corrosion-resistant (13Cr, Super 13Cr, Duplex) for efficient production.

B. Drill Pipe

• Materials: High-strength steel (S135, G105) & aluminum alloys.

• Lengths: Range 2 (27–32 ft) & Range 3 (up to 45 ft).

• Features: Internal coatings for fluid flow optimization.

C. Drill Collars

• Types: Spiral, non-magnetic, square, and heavy-duty.

• Specs:

  • <7″: Yield ≥758 MPa, Hardness 285–341 HB.

  • ≥7″: Yield ≥689 MPa, Impact energy ≥54J.

D. Heavy Weight Drill Pipe (HWDP)

• Advantages: Reduces torque, prevents differential sticking, and improves deep-well drillability.

• Design: Thick-walled with tool joints for fatigue resistance.