{"product_id":"a500-a513-carbon-steel-rectangular-tubing-3in-x-4in-x-0-25in","title":"A500\/A513 Carbon Steel Rectangular Tubing 3in x 4in x 0.25in","description":"\u003cp\u003eIn this review of the A500\/A513 Carbon Steel Rectangular Tubing the bottom line is straightforward: this is a heavy-duty, no-frills structural tube best suited for fabricators, contractors, and serious DIYers who need reliable steel stock for load-bearing or welded projects. The reviewer found it notable for its balance of strength, weldability and low cost, and that combination makes it a practical choice when you need a common North American tubing grade that performs predictably in construction and framing work.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial grade:\u003c\/strong\u003e A500\/A513 steel provides good strength and predictable mechanical properties for general structural use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e The 3in height, 4in width and 0.25in wall give a sturdy cross section suitable for framing and supports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e At 36in long the tube is convenient for smaller projects or can be trimmed and welded into larger assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Hot rolled A36 construction means the material is suited to typical structural tasks like building and bridge components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeldability:\u003c\/strong\u003e Customers report clean welds and good welded quality, which eases fabrication and custom joins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue:\u003c\/strong\u003e Low cost relative to other specialty steels makes it a practical choice for bulk projects where budget matters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tubing is aimed at professionals and experienced hobbyists who need a common, reliable piece of structural steel: contractors building frames, metal fabricators creating supports or railings, and makers who will weld, cut and finish the stock. The combination of A500\/A513 grading and hot rolled A36 properties gives purchasers confidence for load-bearing and general construction use.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include buyers needing precision cold-rolled finishes, tight dimensional tolerances for cosmetic applications, or specialty alloys with corrosion resistance beyond standard carbon steel. For exterior projects where long-term rust resistance is critical, consider stainless or coated alternatives.\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\u003eGood strength and weldability make it a dependable choice for structural welding and fabrication.\u003c\/li\u003e\n\u003cli\u003eRobust 0.25in wall thickness and 3in by 4in profile provide substantial stiffness for supports and frames.\u003c\/li\u003e\n\u003cli\u003eArrives clean with minimal rust and shows consistent welded quality according to customer feedback.\u003c\/li\u003e\n\u003cli\u003eLow cost relative to many specialty steels keeps project budgets under control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAs hot rolled A36 it lacks the refined surface finish and tight tolerances of cold-rolled or specialty tubing.\u003c\/li\u003e\n\u003cli\u003eNot inherently corrosion resistant, so exterior use may require coating or painting for longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eRectangular steel tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eA500\/A513 carbon steel (Hot Roll A36)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e3in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\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\u003e0.25in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e36in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards met\u003c\/td\u003e\n\u003ctd\u003eMeets ASTM-A513; ASTM-A500 available on request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe A500\/A513 Carbon Steel Rectangular Tubing is a pragmatic, value-oriented choice for construction and fabrication work where strength and weldability matter more than surface finish. Professionals and serious DIYers will appreciate the stout 0.25in wall and common grading, while those needing precision surface or corrosion resistance should opt for other alloys or finishes. Overall it offers strong performance for the price.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tubing suitable for welding?\u003c\/strong\u003e\u003cbr\u003eYes, the A500\/A513 grade and hot rolled A36 construction offer good weldability for common fabrication methods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it rust if used outdoors?\u003c\/strong\u003e\u003cbr\u003eAs standard carbon steel it can rust over time; painting or a protective coating is recommended for long-term outdoor exposure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the length be shortened or joined?\u003c\/strong\u003e\u003cbr\u003eYes, customers frequently cut and weld the 36in sections to length or join them into larger assemblies.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48266286825691,"sku":"B000H9M4MQ","price":140.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41K96xhaPtL._AC_SL1000_938065a1-6002-4609-adef-9cb1729d27e1.jpg?v=1778280849","url":"https:\/\/gearmusthave.com\/products\/a500-a513-carbon-steel-rectangular-tubing-3in-x-4in-x-0-25in","provider":"GearMustHave","version":"1.0","type":"link"}