4130 Steel Oil Well Pipe - Corrosion Resistant High Tensile Strength Precision Engineered for Oil Drilling

4130 (30CrMo) steel offers exceptional performance for oilfield drilling and water well drilling applications. With excellent microstructure and reliable mechanical properties, it has become the preferred choice for demanding industrial applications.

Basic Specifications: Φ69.85×Φ60.33×3060. Delivered in stress-relieved and annealed state to meet technical requirements.

Chemical Composition: Precise control of elements including C (0.28-0.33), Cr (0.80-1.10), Si, and Mn ensures stable performance and adaptability to complex working conditions.

Mechanical Properties: Tensile strength ≥800 MPa, yield strength ≥720 MPa, elongation ≥15%, hardness HRC 25-28, grain size ≥8.0 grades. Comprehensive inspection including eddy current, dimensional, and surface quality meets standards.

• Stress Relief Annealing after Cold Working (+SR) (BKS)
• Normalizing (+N) (NBK)
• Quenching & Tempering (QT)

Ideal for fore poling (advance support), mine blasting, water well drilling, geothermal well drilling, and coal/nonferrous metal mining. The high strength-toughness combination withstands complex stresses while precise composition and processing ensure dimensional stability, reducing operational risks and enhancing durability.

Strict quality inspection before delivery. Comprehensive support for quality issues with rapid response and full-process assistance for procurement and usage.

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