{"product_id":"carbon-steel-square-tubing-4in-x-1-4in-wall-x-24in-structural-grade","title":"Carbon Steel Square Tubing 4in x 1\/4in Wall x 24in - Structural Grade","description":"\u003cp\u003eIn this review the reviewer finds the OnlineMetals A500\/A513 carbon steel square tubing to be a straightforward, no-nonsense material for structural projects where strength and ease of modification matter. Intended for fabricators, machine builders and serious hobbyists, the biggest reason to buy is its combination of heavy-duty, hot rolled carbon steel construction and ready-to-work condition that accepts welding, cutting and drilling without surface coatings getting in the way. The tube's dimensions and wall thickness make it a reliable choice when a rigid square member is required for frames, supports or test fixtures.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-strength carbon steel:\u003c\/strong\u003e The hot rolled ASTM A-36 construction provides robust structural integrity for load-bearing frames and machine supports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4in height with 1\/4in wall:\u003c\/strong\u003e The substantial wall thickness offers stiffness and resistance to bending for medium-duty structural uses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24in length:\u003c\/strong\u003e A manageable length for shop projects that reduces handling and shipping complexity compared with longer stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady for modification:\u003c\/strong\u003e The uncoated surface accepts welding, drilling and cutting easily, simplifying fabrication and assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable and recyclable:\u003c\/strong\u003e Built to resist routine wear and designed as a recyclable material, making it practical for long-term installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultipurpose compatibility:\u003c\/strong\u003e Works with standard tube connectors and fittings for machine fab, models and sand separator systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe product suits metalworkers, small fabricators and engineers who need a sturdy square tube for frames, jigs, machine bases or architectural elements and who plan to modify or weld the material in a shop environment. Its uncoated surface and ASTM A-36 grade are especially appropriate for projects where post-fabrication coating or painting will be applied.\u003c\/p\u003e\u003cp\u003eThose who require pre-treated, rustproof or precision-ground tubing for exposed architectural finish work should consider alternatives with factory coatings or stainless steel; likewise, if exact dimensional tolerances or polished surfaces are essential, this hot rolled stock may not meet those needs.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSolid, structural-grade carbon steel that welds and machines well for functional builds.\u003c\/li\u003e\n\u003cli\u003eSubstantial 1\/4in wall thickness offers rigidity for frames and supports.\u003c\/li\u003e\n\u003cli\u003eConvenient 24in length reduces waste and is easy to handle in small shops.\u003c\/li\u003e\n\u003cli\u003eRecyclable and durable for long-term use in industrial or hobby projects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUncoated hot rolled surface can show surface oxidation in some storage conditions, so rust resistance is mixed according to user reports.\u003c\/li\u003e\n\u003cli\u003eNot intended as a finished architectural surface without additional preparation or coating.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCarbon steel (ASTM A-36)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSquare tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e4in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall thickness\u003c\/td\u003e\n\u003ctd\u003e1\/4in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e24in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eHot rolled, uncoated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eFor fabricators and engineers needing a reliable, modifiable square tube, this carbon steel option offers strong value: the ASTM A-36 hot rolled construction and 1\/4in wall deliver dependable rigidity and straightforward shop workability. Buyers who need a finished appearance or guaranteed corrosion protection should plan on additional coating or choose a different grade, but for structural and functional builds this tube is a practical, cost-effective choice.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan this tubing be welded?\u003c\/strong\u003e\u003cbr\u003eYes. The hot rolled carbon steel is suitable for common welding processes and is supplied uncoated to facilitate welding.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the surface rust resistant?\u003c\/strong\u003e\u003cbr\u003eThe tubing is engineered to resist wear, but the hot rolled, uncoated surface can show oxidation in some conditions; plan to coat or paint for long-term exterior use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the length fit standard tube fittings?\u003c\/strong\u003e\u003cbr\u003eThe 24in length and 4in section work with many tube connectors, but check connector dimensions against the 4in profile and 1\/4in wall for compatibility.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48614684524763,"sku":"B000H9NVMS","price":88.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51mvzNj-mjL._AC_SL1000_1e481b8d-2b9b-4ca5-a52d-a0a014d57dfb.jpg?v=1778372157","url":"https:\/\/gearmusthave.com\/products\/carbon-steel-square-tubing-4in-x-1-4in-wall-x-24in-structural-grade","provider":"GearMustHave","version":"1.0","type":"link"}