Custom Round-to-Square Steel Tubing | Precision Internal Square Hollow

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Custom Round-to-Square Steel Tubing | Precision Internal Square Hollow Section

Professional manufacturer of Custom Round Exterior, Square Interior Steel Tubing. We offer precision cold-drawn non-standard profiles for torque transmission, steering systems, and heavy machinery. Superior strength and bespoke sizing based on your CAD drawings. Request a factory quote!

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Product Details

Core Highlights

Bespoke Customization: Professional tailoring for non-standard profiles to meet your specific technical drawings.
Rugged & Durable: Engineered with high-strength materials to ensure long-term reliability in heavy-duty environments.
Versatile Utility: A multi-functional, "one-pipe, multi-use" solution across various industrial sectors.
Precision Forming: Expertly crafted with accurate internal square geometry and a smooth outer finish.
Engineering Craftsmanship: Optimized for mechanical equipment, construction engineering, automotive/motorcycle parts, and agricultural facilities.

Technical Specifications

Feature	Professional Specification
Product Type	Round Exterior, Square Interior Special-Shaped Tube
Cross-Section Shape	Circular Outer Diameter (OD) with Square Inner Bore (ID)
Material Options	Carbon Steel (1020, 1045), Alloy Steel, Stainless Steel
Manufacturing Process	Precision Cold Drawing (ensures sharp internal corners)
Customization Range	Fully customizable OD, Square side length, and Wall thickness
Key Advantage	Prevents rotation of internal shafts; High torsional strength

Strategic Industry Applications

Power Transmission: Ideal for telescoping steering columns, drive shafts, and torque-transmitting joints.
Machinery & Tools: Used as specialized sleeves, tool holders, and guide rails for industrial equipment.
Agricultural Machinery: Core structural components for harvesters, tractors, and irrigation systems.
Automotive Engineering: High-precision chassis parts, gear selection rods, and custom motorcycle frames.

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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.