{"product_id":"a513-cold-roll-carbon-steel-round-tubing-1-2-in-od-durable-drawn","title":"A513 Cold Roll Carbon Steel Round Tubing 1\/2 in OD - Durable Drawn","description":"\u003cp\u003eIn this review the A513 Cold Roll Carbon Steel Round Tubing is assessed for workshop and HVAC use; it is best for fabricators and hobbyists who need a strong, consistent tube for shafts, pins, or fluid lines. The single biggest reason to buy is its combination of cold rolled strength and a drawn-over-mandrel bore that delivers a smoother internal surface and consistent wall thickness compared with non-drawn welded tubing, making it a dependable choice where rigidity and dimensional stability matter.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA513 construction:\u003c\/strong\u003e Meets ASTM-A513 specifications, providing assurance of consistent material quality for industrial projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold rolled finish:\u003c\/strong\u003e Cold rolling increases yield strength and hardness, which benefits applications requiring durable, wear-resistant tubing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawn over mandrel:\u003c\/strong\u003e The drawn internal bore yields a smoother inside surface and more consistent wall thickness, useful for fluid and gas transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFractional size:\u003c\/strong\u003e The 1\/2 in outside diameter with a 0.095 in wall gives a robust profile suitable for pins, shafts, and structural supports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength and fit:\u003c\/strong\u003e At 72 in length the tube is long enough for many cuts and layouts, reducing the need for joins in continuous runs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe tubing is ideal for metalworkers, HVAC technicians, and automotive hobbyists who need a strong, machineable round tube for shafts, spindles, fuel or air lines, and structural components. Its higher yield strength and drawn-over-mandrel bore make it especially appropriate where consistent wall thickness and a smoother inner surface are valuable.\u003c\/p\u003e\u003cp\u003eThose who require easy weldability or superior machinability above strength may prefer a different grade, since A513 1018 carbon steel trades some weldability and machinability for rigidity. Also, projects needing precise inner-diameter tolerances should verify fit, as some customers report the inner diameter can be slightly smaller than expected.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh material strength and rigidity from cold rolled 1018 carbon steel.\u003c\/li\u003e\n\u003cli\u003eConsistent wall thickness and a smoother bore thanks to drawn-over-mandrel manufacturing.\u003c\/li\u003e\n\u003cli\u003eMeets ASTM-A513 for reliable quality in industrial and automotive use.\u003c\/li\u003e\n\u003cli\u003eGood value for money for general-purpose tubing and mechanical components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSome customers note the inner diameter can be slightly smaller than expected, which may affect tight-fit applications.\u003c\/li\u003e\n\u003cli\u003eLower weldability and slightly reduced machinability compared with lower-carbon or specialized alloys.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eASTM A513\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e1018 carbon steel (cold rolled)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside diameter\u003c\/td\u003e\n\u003ctd\u003e1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside diameter\u003c\/td\u003e\n\u003ctd\u003e0.31 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall thickness\u003c\/td\u003e\n\u003ctd\u003e0.095 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e72 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe A513 Cold Roll Carbon Steel Round Tubing is a practical, value-oriented choice for users who need strength, consistent wall thickness, and a smoother bore for fluid lines or mechanical parts. Buy it if you prioritize rigidity and quality assurance under ASTM-A513; consider other grades only if weldability or ultra-precise inner-diameter clearance is critical to your build.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this tubing suitable for automotive air conditioning lines?\u003c\/strong\u003e\u003cbr\u003eYes; the tubing is described as suitable for automotive A\/C lines where a smooth bore and consistent wall thickness are beneficial.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this tube be welded and machined?\u003c\/strong\u003e\u003cbr\u003eIt is welded and drawn over mandrel and can be machined, but 1018 carbon steel has slightly reduced weldability and machinability compared with some other steels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the inner diameter be exact for press-fit parts?\u003c\/strong\u003e\u003cbr\u003eMost customers find dimensions accurate, but some report the inner diameter can be slightly smaller than expected, so measure before final assembly.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48194727051483,"sku":"B000H9LSPA","price":39.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51RCqvxR91L._AC_SL1000_f0072e1d-1a07-438a-9305-f7929600504f.jpg?v=1770354118","url":"https:\/\/gearmusthave.com\/products\/a513-cold-roll-carbon-steel-round-tubing-1-2-in-od-durable-drawn","provider":"GearMustHave","version":"1.0","type":"link"}