Star-shaped tube
Key Design Features:
1. Advanced Star-Shaped Geometry
Multi-Point Engagement Profile – 4 to 12 radial lobes provide multiple positive-drive surfaces for torque transmission without slippage
Optimized Radial Strength – Star configuration distributes loads evenly across all lobes, reducing stress concentration by 25-35% compared to splined round tubes
Enhanced Surface Contact – Multiple flat engagement surfaces ensure superior grip for clamping, welding, or mechanical fastening
Integrated Flow Channels – Internal star profile creates distinct passages ideal for multi-channel fluid or pneumatic distribution systems
2. Precision Manufacturing Process
CNC Cold-Drawing or Extrusion Technology – Automated forming ensures consistent lobe dimensions (±0.05mm) and precise angular spacing (±0.3°)
High-Strength Materials – Manufactured from 20CrMnTi alloy steel, ST52 carbon steel, or 6061-T6/7075-T6 aluminum alloys
Seamless Construction – DOM seamless steel tubing or seamless extruded aluminum ensures uniform wall thickness and structural integrity
Surface Finish Options – Available in precision-turned, ground, phosphated, anodized, or polished finishes per application requirements
3. Superior Mechanical Properties
Wall Thickness Range – 1.5mm to 10.0mm customizable to torque and pressure requirements
High Torque Capacity – Optimized lobe geometry enables torque transmission up to 40% higher than equivalent round spline tubes
Excellent Anti-Rotation Stability – Multi-lobe design prevents relative rotation under dynamic loads without additional keys or pins
Operating Temperature Range – -60°C to +200°C for alloy steel, -40°C to +120°C for aluminum variants
4. Application-Specific Engineering
Torque Transmission Shafts – Ideal for driveline components, power take-off (PTO) shafts, and precision drive systems
Hydraulic Manifold Systems – Multi-channel internal geometry perfect for complex fluid distribution networks
Robotic and Automation Equipment – Precision positioning rails and torque tubes for servo-driven mechanisms
Agricultural Machinery – Custom PTO extensions, implement drive shafts, and hydraulic control lines
Aerospace and Defense – Lightweight structural elements with integrated fastening points for critical assemblies
5. Versatile Configuration Options
Variable Lobe Count – 4-lobe (square-star), 6-lobe, 8-lobe, or 12-lobe profiles to match specific engagement requirements
Tapered Star Profiles – Gradual lobe height variation along length for self-centering or progressive engagement applications
Combination Designs – Star profile integrated with round, square, or flanged end sections for hybrid connections
Internal or External Star – External lobes for torque transmission or internal star profile for specialized tooling interfaces
End Treatment Options – Precision-machined ends, welded flanges, threaded adapters, or splined transitions available
Why Choose Hangzhou Ocean Industry Co., Ltd.?
20+ Years Manufacturing Experience in automotive driveline components
Global Export Network – Serving customers in 50+ countries
Advanced Production Facilities – CNC machining, heat treatment, dynamic balancing
Reliable Lead Times – 15-30 days for standard products, 45-60 days for custom orders
Professional Technical Support – Engineering team with automotive industry expertise
Long-term Partnership Approach – Dedicated account management for strategic clients
Hangzhou Ocean Industry Co., Ltd. is a professional manufacturer, and most of our goods have been exported to Europe since 2005. The Star-shaped tube from Hangzhou Ocean Industry Co., Ltd. is a precision-engineered structural component designed for high-strength frameworks, precision mechanical assemblies, and industrial applications requiring superior bidirectional stability and efficient space utilization. Featuring a geometrically optimized square cross-section, this tube offers exceptional bending resistance in both principal axes, flat mounting surfaces, and versatile connection options across construction equipment, agricultural machinery, automotive chassis, material handling systems, and architectural structural applications.
Crafted with high-grade carbon steel, alloy steel, or aluminum and precision roll-forming, extrusion, or seamless drawing technology, this specialty tube ensures consistent dimensional accuracy, superior load-bearing capacity, and extended service life even under demanding operating conditions.
