Professional Overview
Our Internal Splined Steel Tubing is a high-precision, non-standard engineered solution designed for seamless mechanical coupling. Featuring a smooth circular exterior and a multi-toothed inner-serrated profile, this tube is the industry standard for high-torque transmission and anti-rotation assemblies.
Through advanced cold-drawing technology, we achieve superior dimensional accuracy in the internal geometry, eliminating the need for expensive internal broaching or machining.
Technical Excellence
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High-Torque Performance: The multi-lobed internal ribs act as integrated keys, providing exceptional grip and power distribution.
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Precision Cold-Drawn Finish: Achieves a high-grade surface finish and tight tolerances ($\pm 0.05mm - 0.1mm$), ensuring a perfect fit with mating shafts.
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Enhanced Structural Integrity: Cold-working the steel increases its yield strength, making the splined profile more resistant to wear and deformation under heavy loads.
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Custom Geometry: We offer 100% Bespoke Customization based on your CAD drawings, including tooth count, pressure angles, and wall thickness.
Performance Specifications
| Engineering Feature | Capability / Range |
| Profile Geometry | Internal Spline / Serrated ID / Star-shaped Interior |
| Material Grades | Carbon Steel (1020, 1045), Alloy Steel (4140, 5140), Stainless Steel |
| Manufacturing Process | Precision Cold Drawing / Mandrel Drawing |
| Surface Treatment | Bright Annealed, Anti-rust Oiling, or Phosphating |
| Key Function | Torque Transmission & Longitudinal Sliding |
Strategic Industry Use-Cases
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Power Transmission: Telescoping drive shafts, PTO shafts for agricultural machinery, and industrial couplings.
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Automotive Systems: High-precision steering columns, gear sleeves, and motorcycle transmission components.
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Hydraulic Solutions: Specialized cylinder barrels requiring internal longitudinal grooves.
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Construction Engineering: High-strength adjustable scaffolding joints and structural interlocking poles.
Why Source Our Splined Tubing?
One-Step Manufacturing: By providing a ready-to-use internal profile, we help you bypass secondary machining processes, significantly reducing your production lead times and material waste. Our Craftsmanship ensures that every special-shaped tube is a reliable core for your mechanical equipment.
