We specialize in supplying premium-grade drill pipes designed to withstand the rigorous demands of oil, gas, and geothermal drilling applications. Manufactured from high-strength alloy steels (grades E75, X95, G105, S135), our drill pipes excel in extreme conditions, offering superior torsional strength, fatigue resistance, and durability. Available in API 5DP-compliant sizes (2⅜" to 6⅝" OD) with standard lengths of 9.5m or custom options, they feature precision-machined tool joints (NC26, NC38, NC50) for seamless connectivity and reduced downtime.
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Parameter
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Range/Options
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Outer Diameter (OD)
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2⅜" – 6⅝" (60.3 mm – 168.3 mm)
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Wall Thickness
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0.25" – 0.75" (6.35 mm – 19.05 mm)
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Length
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Standard: 9.5m (31 ft) ; Custom: Up to 12m (39 ft)
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Grades
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API 5DP: E75, X95, G105, S135 (high-strength alloy steel)
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Tool Joints
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NC26, NC38, NC50, 5½" FH, 6⅝" Reg
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Applications
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Onshore/offshore drilling, directional drilling, geothermal, water well drilling
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Standard
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Scope
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Key Grades
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Key Features
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API 5DP
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Drill pipes for oil & gas drilling
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E75, X95, G105, S135
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Torsional strength, fatigue resistance, API monogram
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ISO 11961
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Drill stem materials for int’l markets
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E75, X95, G105, S135
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Compliance with global drilling safety norms
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SY/T5561
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Chinese standard for drill pipes
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DZ40, DZ55, DZ75
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Tailored for domestic drilling projects
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Non-API Custom
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Specialized applications (e.g., deepwater)
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S135+, V150
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Enhanced yield strength, anti-corrosion coatings
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