Description
Product Overview
The A36 carbon steel square tubing offered by OnlineMetals is engineered for demanding structural applications where strength, durability, and precision are paramount. Measuring 72 inches in length, 1.5 inches in width, and a wall thickness of 0.04 inches, this hot‑rolled tube delivers a balanced profile that is both lightweight (12.35 pounds) and robust enough to support heavy loads. Crafted from high‑quality A36 carbon steel, the tubing conforms to ASTM A36 specifications, ensuring consistent mechanical properties such as tensile strength, yield strength, and elongation. The hot‑rolling process enhances formability, allowing the material to be easily cut, bent, and welded without compromising its structural integrity. Additionally, the surface is treated to resist wear, making it suitable for environments where abrasion and impact are common. This product is a versatile component for a wide range of industrial, commercial, and DIY projects, from framing and scaffolding to custom machinery and artistic installations.
![[Product front view showing all components]](https://www.ticketsbuy.store/wp-content/uploads/2026/06/d3978eede4a24ff090cf5da7fb93bcf3.jpg)
Usage
Designed for versatility, this A36 square tubing excels in numerous real‑world scenarios. In construction, it serves as a reliable backbone for steel frames, supporting walls, roofs, and mezzanine levels. Its dimensional stability makes it ideal for building modular structures that require precise alignment and repeatable assembly. In manufacturing, the tubing is frequently used to fabricate machine frames, conveyor supports, and equipment housings where rigidity and vibration damping are essential. The hot‑rolled finish also lends itself to outdoor applications such as agricultural fencing, storage sheds, and temporary shelters, where exposure to weather and mechanical wear is expected. Hobbyists and makers appreciate the ease of machining and welding, allowing them to create custom brackets, stands, and artistic pieces with confidence. Because the material meets ASTM A36 standards, it is approved for use in many regulated projects, providing peace of mind for engineers, architects, and contractors alike.
Why Choose Us
OnlineMetals distinguishes itself through a commitment to quality, transparency, and customer support. Every tube is sourced from reputable steel mills and undergoes rigorous inspection to verify dimensions, material composition, and surface condition before it reaches our inventory. Our streamlined fulfillment process ensures that you receive the exact product you ordered, with accurate labeling and packaging that protects the tube during transit. We provide detailed product data sheets, including mechanical properties and certification documents, so you can confidently integrate the tubing into your engineering calculations. In addition, our knowledgeable support team is available to answer technical questions, recommend cutting or welding techniques, and assist with custom orders if you need different lengths or finishes. We also offer a hassle‑free return policy and post‑sale assistance, reinforcing our dedication to long‑term customer satisfaction. When you purchase from OnlineMetals, you benefit from a reliable supply chain, consistent product performance, and a partner that values your project’s success.
Key Features
- Hot‑rolled A36 carbon steel provides excellent strength and formability for diverse applications.
- Wear‑resistant surface extends service life in abrasive and outdoor environments.
- Precise 72 in × 1.5 in × 0.04 in dimensions ensure easy integration into standard framing systems.
- Meets ASTM A36 specifications, guaranteeing reliable mechanical performance and compliance.
- Dedicated customer support and detailed documentation simplify project planning and execution.
FAQ
What does the model number 78233 represent?
The model number 78233 is an internal identifier used by OnlineMetals to track this specific size, material grade, and finish of the A36 square tubing. It helps ensure you receive the exact product specifications you ordered.
Can this tubing be welded without additional preparation?
Yes, the hot‑rolled A36 steel is readily weldable using standard MIG, TIG, or stick welding techniques. For optimal results, clean the joint area of any oil, rust, or contaminants before welding.
Is the tubing suitable for outdoor use?
Absolutely. The wear‑resistant surface and corrosion‑protective coating make the tubing suitable for outdoor installations such as fencing, sheds, and temporary structures, provided it is installed according to local building codes.
What is the weight per foot of this tube?
The tube weighs approximately 0.17 lb per foot, resulting in a total weight of about 12.35 lb for the full 72‑inch length. This lightweight characteristic simplifies handling and installation while maintaining structural strength.
Do you offer custom lengths or finishes?
OnlineMetals can accommodate custom length requests and a variety of surface finishes, including galvanized, painted, or powder‑coated options. Contact our sales team for a quote and lead time based on your specific requirements.







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