{"product_id":"cold-rolled-steel-a513-drawn-over-mandrel-round-tubing-durable","title":"Cold Rolled Steel A513 Drawn Over Mandrel Round Tubing - Durable","description":"\u003cp\u003eIn this review the Cold Rolled Steel A513 Drawn Over Mandrel Round Tubing is evaluated for use in fluid and gas transport and common automotive and HVAC tasks. The bottom line: this tubing is aimed at fabricators and hobbyists who need a strong, consistent, and smooth-bore tube for lines and structural runs; the single biggest reason to buy is its \u003cstrong\u003edrawn over mandrel construction\u003c\/strong\u003e, which yields a smoother inside surface and more reliable wall thickness than ordinary welded or non-drawn tubing.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold rolled steel:\u003c\/strong\u003e provides greater yield strength and hardness than hot rolled alternatives, improving durability for pressure and load-bearing uses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawn over mandrel:\u003c\/strong\u003e produces a smoother bore compared with non-drawn welded tubing, reducing flow turbulence for fluids and gases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded construction:\u003c\/strong\u003e gives consistent outer geometry while the drawing process refines internal dimensions for better fit with fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM A513 specification:\u003c\/strong\u003e ensures the material and fabrication meet an industry standard for predictable mechanical properties and quality assurance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFractional dimensions:\u003c\/strong\u003e 5\/8 in OD with a 1\/2 in ID and 0.065 in wall provide a balance of strength and usable inner passage for many automotive and HVAC lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48 in length:\u003c\/strong\u003e practical for trimming to custom lengths for repairs, prototyping, or short runs without excessive waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe tubing is best for automotive technicians, HVAC installers, and metalworkers who need a reliable, cold rolled tube with a smooth interior for fluid and gas transfer. The material and construction suit applications like fuel lines, A\/C lines, small hydraulic passages, and structural bracing where predictable wall thickness matters.\u003c\/p\u003e\n\u003cp\u003eThose who require a seamless tube for very high-pressure hydraulic systems or who need non-ferrous metals for corrosion resistance should consider alternatives. Likewise, projects that demand custom long lengths beyond 48 in or specialized alloys are not the intended use for this stock item.\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 hardness from the \u003cstrong\u003ecold rolled\u003c\/strong\u003e process, making it sturdy for mechanical and fluid-transfer uses.\u003c\/li\u003e\n\u003cli\u003eSmoother bore from the drawn over mandrel method improves flow and fitting alignment.\u003c\/li\u003e\n\u003cli\u003eMeets ASTM A513 for consistent quality and repeatable mechanical properties.\u003c\/li\u003e\n\u003cli\u003eCustomers report strong value and suitability for projects such as fuel tank hookups and HVAC lines.\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 may be slightly smaller than nominal in some pieces, which can affect very tight-tolerance fittings.\u003c\/li\u003e\n\u003cli\u003eBeing steel, it is not suited for applications requiring corrosion-resistant alloys without additional protection.\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\u003eCold rolled steel\u003c\/td\u003e\n\u003c\/tr\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\u003eOuter diameter\u003c\/td\u003e\n\u003ctd\u003e5\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner diameter\u003c\/td\u003e\n\u003ctd\u003e1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall thickness\u003c\/td\u003e\n\u003ctd\u003e0.065 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e48 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Cold Rolled Steel A513 drawn over mandrel round tubing is a sensible buy for fabricators and technicians needing a strong, consistent tube for automotive and HVAC fluid or gas lines. It offers dependable construction and meets ASTM A513, delivering good value where a smooth bore and predictable wall thickness matter, though users should verify ID fitment for very tight tolerances.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tubing suitable for fuel lines?\u003c\/strong\u003e\u003cbr\u003eYes, it is commonly used for automotive fuel and A\/C lines, though users should ensure fittings and clamps match the actual measured ID.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require special fittings?\u003c\/strong\u003e\u003cbr\u003eNo special fittings are required beyond standard fittings sized to the 1\/2 in ID or 5\/8 in OD, but confirm the inner diameter before final assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it resist corrosion?\u003c\/strong\u003e\u003cbr\u003eAs cold rolled steel, it will rust if exposed to moisture; use protective coatings or choose a corrosion-resistant alloy for long-term exposure.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48245892907227,"sku":"B000H9K3FG","price":32.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51RCqvxR91L._AC_SL1000_103480e9-f90f-470b-a006-b33ea990b779.jpg?v=1776277982","url":"https:\/\/gearmusthave.com\/products\/cold-rolled-steel-a513-drawn-over-mandrel-round-tubing-durable","provider":"GearMustHave","version":"1.0","type":"link"}