{"product_id":"a513-cold-roll-carbon-steel-round-tubing-7-8in-od-durable-drawn-tube","title":"A513 Cold Roll Carbon Steel Round Tubing 7\/8in OD - Durable Drawn Tube","description":"\u003cp\u003eOur review of the A513 Cold Roll Carbon Steel Round Tubing finds it best suited for metalworkers, fabricators, and automotive hobbyists who need a short, strong length of tubular stock. The single biggest reason to buy is its combination of cold rolled strength and a drawn-over-mandrel bore, which gives a smoother interior and more consistent wall thickness than non-drawn welded tubing. Reviewers will appreciate the suitability for applications such as HVAC lines, automotive fittings, and shafts where rigidity and predictable dimensions matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A513 cold rolled carbon steel delivers increased yield strength and hardness for durable structural use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawn Over Mandrel:\u003c\/strong\u003e The drawn-over-mandrel process provides a smoother bore and more consistent wall thickness for better fit and flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e The 7\/8in outside diameter with a 0.563in inside diameter and 0.156in wall offers a robust cross section for pins, shafts, and structural components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e The 24in cut is convenient for short runs, prototypes, or multiple smaller parts without excessive waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM A513 Compliance:\u003c\/strong\u003e Meeting ASTM-A513 assures buyers of consistent manufacturing standards for mechanical and dimensional properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Uses:\u003c\/strong\u003e 1018 carbon steel chemistry makes this tubing suitable for pins, rods, spindles, and sprocket-related applications where strength is valued.\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 DIYers repairing automotive air conditioning lines, creating structural components, or fabricating custom shafts and pins. Its cold rolled, drawn construction is particularly useful when a smoother internal surface and uniform wall thickness are required for assembly or fluid transfer.\u003c\/p\u003e\n\u003cp\u003eThose who need extremely tight inner diameter tolerances or exceptional weldability may want to evaluate alternative alloys or processes, because A513 and 1018 carbon steel trade slightly reduced machinability and weldability for greater strength and hardness.\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 material strength and rigidity suitable for load-bearing uses.\u003c\/li\u003e\n\u003cli\u003eSmoother bore and consistent wall thickness from the drawn-over-mandrel process improves fit and flow.\u003c\/li\u003e\n\u003cli\u003eMeets ASTM-A513 for repeatable quality and dimensions.\u003c\/li\u003e\n\u003cli\u003eWell regarded by customers for steel quality and value for money.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInner diameter can be slightly smaller than expected in some pieces, which may affect tight-fit applications.\u003c\/li\u003e\n\u003cli\u003eA513\/1018 has somewhat lower machinability and weldability compared with softer steel grades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\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\u003eCold rolled carbon steel (1018 chemistry)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e7\/8in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter\u003c\/td\u003e\n\u003ctd\u003e0.563in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Thickness\u003c\/td\u003e\n\u003ctd\u003e0.156in\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\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe A513 Cold Roll Carbon Steel Round Tubing is a practical choice for fabricators and automotive hobbyists who need strong, consistent tubular stock with a smooth bore. It offers solid value and reliable mechanical properties for pins, shafts, HVAC lines, and short structural runs; buyers who require ultra-precise inner diameters or maximum weldability should consider other alloys or custom tolerances.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tubing suitable for automotive fuel or AC lines?\u003c\/strong\u003e\u003cbr\u003eYes, the tubing is commonly used in automotive and HVAC applications and is suitable for AC lines; verify inner diameter fit for specific fittings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this tubing be welded and machined easily?\u003c\/strong\u003e\u003cbr\u003eIt can be welded and machined, but A513\/1018 has slightly lower weldability and machinability than softer steels, so adjust techniques accordingly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the product meet any industry standards?\u003c\/strong\u003e\u003cbr\u003eYes, the tubing meets ASTM-A513 specifications for dimensional and manufacturing quality.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48187303723227,"sku":"B000H9M7FU","price":34.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51RCqvxR91L._AC_SL1000_e47d8f13-665d-459e-baf8-802e7155e531.jpg?v=1769446291","url":"https:\/\/gearmusthave.com\/products\/a513-cold-roll-carbon-steel-round-tubing-7-8in-od-durable-drawn-tube","provider":"GearMustHave","version":"1.0","type":"link"}