External Hexagonal Internal Round Tube | Hexagonal Special Shaped Steel Tube for Precision Applications

The External Hexagonal Internal Round Tube is a high-performance special shaped steel pipe featuring a hexagonal exterior and a circular inner bore. This unique structure combines the anti-rotation advantages of a hexagon with the smooth flow and machining benefits of a round inner diameter.

With high torsional strength, excellent structural stability, and precise positioning capability, this hexagonal tube is widely used in applications requiring high transmission accuracy, rigidity, and resistance to deformation. It is especially suitable for agricultural machinery, mechanical manufacturing, construction decoration, and engineering equipment.

Product Details

Custom Specifications

We support full customization based on your requirements:

• Outer Hexagon Size (Across Flats) – customizable for different torque and structural needs
• Inner Diameter (Round Bore) – precision-controlled for smooth fitting and machining
• Wall Thickness – available from thin wall to thick wall options
• Length – custom cut or bulk supply
• Tolerance Control – high precision manufacturing available

Key Features of Outer Hexagon Inner Round Pipe

• High Anti-Torsion Performance
  The outer hexagonal shape prevents slipping and improves torque transmission.
• Stable Structural Design
  Ensures high rigidity and load-bearing capacity in demanding environments.
• Precise Installation & Alignment
  Ideal for mechanical assemblies requiring accurate positioning.
• Optimized Inner Bore
  The round inner hole supports smooth fluid flow or easy machining.
• Strong Resistance to Deformation
  Maintains structural integrity under heavy loads.

Material & Manufacturing Process

Common Materials:

• Carbon Steel Seamless Pipe
• 20# Seamless Steel Pipe
• 45# Machining Pipe
• Q355B Low Alloy Steel Pipe

Manufacturing Process:

• Cold Drawn Special Shaped Pipe forming
• Precision calibration and straightening
• Optional surface treatments (bright, polished, anti-corrosion coating)

Applications

This product is widely used in:

• Agricultural machinery transmission components
• Mechanical manufacturing and structural parts
• Engineering equipment and heavy machinery
• Construction and decorative structures
• Precision connection and positioning systems