{"product_id":"carbon-steel-square-tubing-1-25in-x-3-16in-x-72in-structural","title":"Carbon Steel Square Tubing 1.25in x 3\/16in x 72in - Structural","description":"\u003cp\u003eIn this review of the carbon steel square tubing, the bottom line is simple: this is a practical, no-frills structural tube for builders, fabricators, and hobbyists who need a solid, modifiable length of steel. The reviewer found the 1.25in height, 3\/16in wall and 72in length ideal for small frames and machine supports, and appreciated that the piece arrives uncoated and ready to be welded, cut, or drilled. If your priority is straightforward strength and editability for construction or model work, this tubing delivers on those basics.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-strength carbon steel:\u003c\/strong\u003e Provides reliable structural integrity for frames and machine supports in both commercial and hobbyist projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25in height, 3\/16in wall:\u003c\/strong\u003e The wall thickness balances rigidity and weight, making it suitable for load-bearing small structures without excessive mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72in length:\u003c\/strong\u003e A full 6ft stick reduces joints for longer runs and gives room to cut multiple parts from a single piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady for modification:\u003c\/strong\u003e The uncoated surface accepts welding, drilling and cutting without needing to strip finishes first, saving prep time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable and sustainable:\u003c\/strong\u003e Engineered to resist wear and packaged as a recyclable raw material for long-term use and reduced waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultipurpose compatibility:\u003c\/strong\u003e Works with common tube connectors and fittings, useful for machine fab, model material projects and separators.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tube is aimed at fabricators, metalworkers, and engineers building small to medium frames, machine supports, jigs, or architectural elements who need a straight, modifiable length of carbon steel. Hobbyists building carts, fixtures or scale models will also find the dimensions convenient and easy to work with.\u003c\/p\u003e\n\u003cp\u003eIt is not for users who require a finished, painted or stainless surface out of the box, nor for applications requiring precision-ground or pre-galvanized tubing; those buyers should consider pre-finished or corrosion-resistant alternatives.\u003c\/p\u003e\n\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 steel quality and consistent dimensions make it reliable for structural builds.\u003c\/li\u003e\n\u003cli\u003eUncoated surface simplifies welding and mechanical modification without extra prep steps.\u003c\/li\u003e\n\u003cli\u003eLength and wall thickness provide a useful balance of strength and manageability for many projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRust resistance is mixed in customer reports, so additional protection may be needed for outdoor or high-humidity use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003e1.25 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall thickness\u003c\/td\u003e\n\u003ctd\u003e3\/16 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\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eUncoated, ready for modification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe carbon steel square tubing is a straightforward, good-value choice for anyone who needs a strong, modifiable 6ft length for frames, machine supports or model builds. With solid dimensions and weld-ready material it suits fabricators and hobbyists, but buyers who need corrosion protection out of the box should plan to coat or choose a treated alternative.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this tubing be welded?\u003c\/strong\u003e\u003cbr\u003eYes. The uncoated carbon steel surface is suitable for welding and other common metalworking operations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the tubing rust-proof?\u003c\/strong\u003e\u003cbr\u003eThe tubing is engineered for durability, but customer feedback on rust resistance is mixed; apply a protective finish for outdoor or humid environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be cut to shorter lengths?\u003c\/strong\u003e\u003cbr\u003eYes. The 72in length is easily cut or drilled to size for custom projects.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48190863278299,"sku":"B000H9M3V8","price":71.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51mvzNj-mjL._AC_SL1000_570480f5-3066-47a9-b474-6067dd970b20.jpg?v=1769592409","url":"https:\/\/gearmusthave.com\/products\/carbon-steel-square-tubing-1-25in-x-3-16in-x-72in-structural","provider":"GearMustHave","version":"1.0","type":"link"}