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External Round Internal Hexagonal Tube

High-strength External Round Internal Hexagonal Tube with excellent torque resistance and precision. Ideal for agricultural machinery and industrial applications. Custom sizes available.

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Product Details

External Round Internal Hexagonal Tube | Special Shaped Steel Pipe for Precision Transmission

The External Round Internal Hexagonal Tube is a high-performance special shaped steel pipe featuring a circular outer surface combined with an internal hexagonal structure. This innovative design combines the smooth installation advantages of a round tube with the anti-rotation and high torque transmission capabilities of a hexagonal inner profile.

With high torsional strength, excellent structural stability, and precise positioning capability, this 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 Diameter (Round Surface) – precision controlled for easy installation
Internal Hexagon Size (Across Flats) – customizable for torque requirements
Wall Thickness – available in thin wall and thick wall options
Length – cut-to-size or bulk production
Tolerance – high precision manufacturing available

Key Features of External Round Internal Hexagonal Tube

High Anti-Torsion Performance
Internal hexagonal structure ensures efficient torque transmission and prevents slipping
Stable Structural Strength
Maintains rigidity under heavy-duty and high-load conditions
Smooth Outer Surface
Round exterior improves assembly compatibility and installation efficiency
Precision Fit & Alignment
Ideal for applications requiring accurate positioning and tight engagement
Strong Resistance to Deformation
Performs reliably in demanding industrial environments

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
Precision forming and calibration
Optional surface treatments (bright, polished, anti-corrosion coating)

Applications

The External Round Internal Hexagonal Tube is widely used in:

Agricultural machinery transmission systems
Mechanical manufacturing components
Engineering equipment and heavy machinery
Construction and decorative structures
Precision drive and connection systems

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Address: No. 75 Xinda Road, Fenshui, Zhoutie Town, Yixing City, Jiangsu, ChinaTelephone: +86 13382221368Email: jianfanjiang9@gmail.com

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About us

We are a professional steel tube manufacturer with over 30 years of experience, specializing in precision steel tubes, seamless steel tubes, PTO drive shaft tubes, and profiled steel tubes. With advanced production facilities and strict quality control, we provide reliable and customized tube solutions for industries including agriculture, automotive, and machinery.

Committed to quality, innovation, and customer satisfaction, we serve clients worldwide and strive to be a trusted global partner in steel tube manufacturing.