{"product_id":"carbon-steel-square-tubing-1-5in-x-1-4in-x-72in-structural-grade","title":"Carbon Steel Square Tubing 1.5in x 1\/4in x 72in - Structural Grade","description":"\u003cp\u003eIn this review the reviewer looks at a 1.5in height, 1\/4in wall, 72in length \u003cstrong\u003ecarbon steel square tubing\u003c\/strong\u003e intended for structural and fabrication work. The bottom line: this hot-rolled ASTM A-36 tube is best for builders, fabricators, and hobbyists who need a sturdy, modifiable steel section for frames, machine supports, or architectural details. Its main appeal is straightforward: heavy-duty carbon steel that is ready to be cut, welded, and drilled without coatings that interfere with fabrication.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-strength carbon steel:\u003c\/strong\u003e The ASTM A-36 material provides predictable structural performance for load-bearing frames and machine supports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5in height with 1\/4in wall:\u003c\/strong\u003e The combination of section size and wall thickness gives a robust resistance to bending and torsion for medium-duty builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72in length:\u003c\/strong\u003e A full 6 ft stick reduces the number of joints and makes it easier to build longer assemblies with fewer welds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady for modification:\u003c\/strong\u003e The uncoated, hot-rolled finish accepts cutting, drilling, and welding without special surface prep beyond standard shop practice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable and recyclable:\u003c\/strong\u003e Engineered to resist general wear and intended to be recyclable, it suits long-life projects and sustainable material choices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultipurpose use:\u003c\/strong\u003e Works with common tube connectors and fittings for harness machine fab, models, and separator systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tube is aimed at shop fabricators, hobby machinists, and contractors who need a dependable structural section for frames, jigs, fixtures, and architectural metalwork. Those who plan to weld, drill, or cut the material will appreciate that it arrives uncoated and in a common structural grade so it integrates easily with standard welding practices and machine work.\u003c\/p\u003e\n\u003cp\u003eUsers who require a cosmetic, pre-finished surface or stainless-grade corrosion resistance should look elsewhere, as this is hot-rolled carbon steel that may show surface oxidation over time and is best used where finish or stainless performance is not critical.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid structural performance from ASTM A-36 carbon steel suitable for many load-bearing applications.\u003c\/li\u003e\n\u003cli\u003eConvenient 72in length reduces joints and simplifies larger assemblies.\u003c\/li\u003e\n\u003cli\u003eUncoated finish makes it straightforward to weld, drill, and machine to custom dimensions.\u003c\/li\u003e\n\u003cli\u003eGood value for raw steel when cost and function are primary concerns.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHot-rolled carbon steel can show surface rust in some environments, so additional protection may be needed for exterior or corrosive use.\u003c\/li\u003e\n\u003cli\u003eNot a stainless or pre-painted option, so finishing steps are required if appearance or corrosion resistance is important.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\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\u003e1.5in\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\u003e72in\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\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 1.5in x 1\/4in x 72in carbon steel square tubing is a practical choice for fabricators and hobbyists who need a strong, modifiable structural member at a reasonable price. It provides reliable mechanical performance and convenience in a 6 ft length, but those needing corrosion-resistant or finished surfaces should plan for coatings or choose a different grade.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this tubing be welded?\u003c\/strong\u003e\u003cbr\u003eYes. The uncoated ASTM A-36 hot-rolled steel is well suited to common welding methods after routine shop prep.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it rust if left outdoors?\u003c\/strong\u003e\u003cbr\u003eIt can develop surface oxidation over time; for outdoor or corrosive environments a protective paint or galvanizing is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this the exact delivered length?\u003c\/strong\u003e\u003cbr\u003eThe specification describes a 72in length; verify shop handling and cutting tolerances when planning precise fits.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48224198623451,"sku":"B000H9PGSU","price":72.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51mvzNj-mjL._AC_SL1000_68737888-ed6e-4a37-8676-99c49eba7640.jpg?v=1770818617","url":"https:\/\/gearmusthave.com\/products\/carbon-steel-square-tubing-1-5in-x-1-4in-x-72in-structural-grade","provider":"GearMustHave","version":"1.0","type":"link"}