{"product_id":"tube-fixture-welding-positioner","title":"Brockett Built Tube Fixture — Adjustable V-Block Tube Spinner for Welding Positioners | 1\"–4\" Tube \u0026 Schedule Pipe","description":"\u003cp\u003e\u003cstrong\u003eBrockett Built Tube Fixture — Adjustable V-Block Tube Spinner for Welding Positioners\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ LIMITED STOCK — NEXT BATCH IS 6 WEEKS OUT.\u003c\/strong\u003e We have a small number of units on the shelf ready to ship today. Once they're gone, the next production batch is approximately \u003cstrong\u003e6 weeks out\u003c\/strong\u003e. Orders placed after the current stock sells will ship in the order they were received when that batch lands. If you need one on the bench this month, order now.\u003c\/p\u003e\n\n\u003cp\u003eSpinning tube by hand is where good welds go to die. The Brockett Built Tube Fixture mounts to your welding positioner and turns tube and pipe on a true, repeatable axis so you can lay a consistent bead all the way around — one pass, one setup, no re-clamping, no stopping to reposition.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes ours different: the adjustable V-block\u003c\/h3\u003e\n\n\u003cp\u003eEvery other tube fixture on the market uses a fixed V-block. Fixed means it only does one thing — hold straight tube, dead center. The second you put a bend, a mandrel section, or a pie cut in it, the part sits off-axis and wobbles as it spins. Your bead wanders, your torch distance changes, and you end up chasing the weld around instead of laying it down.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOurs moves.\u003c\/strong\u003e The V-block pivots and slides independently of the clamp, so you can grab an odd-shaped part wherever it actually needs to be held and still bring it back to a true, centered axis of rotation.\u003c\/p\u003e\n\n\u003cp\u003eThat means:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp on a bend.\u003c\/strong\u003e Hold a mandrel bend mid-radius and still spin it true — no more cutting a straight section just to have something to grip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp on a pie cut.\u003c\/strong\u003e Short, angled segments lock up and center, so you can rotate a pie-cut joint under the torch for a clean, uniform weld all the way around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter anything.\u003c\/strong\u003e Off-round, out-of-spec, or already-welded assemblies — the V-block adjusts to the part instead of forcing the part to fit the V-block.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis is the whole reason the fixture exists. A fixed V-block handles the easy 20% of your work. The adjustable one handles the other 80% — the bends, the pie cuts, and the awkward parts that were costing you time and re-welds.\u003c\/p\u003e\n\n\u003ch3\u003eHolds up to 4\" tube\u003c\/h3\u003e\n\n\u003cp\u003eMost tube clamps on the market top out around 2\". This one runs the full range from 1\" up to 4\" OD, plus schedule pipe — so the big exhaust and header work you've been fighting by hand finally has a home.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound tube:\u003c\/strong\u003e 1.0\", 1.5\", 2.0\", 2.5\", 3.0\", 3.5\", 4.0\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchedule pipe:\u003c\/strong\u003e 1-1\/4\", 1-1\/2\", 2.0\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBuilt for maximizing efficiency\u003c\/h3\u003e\n\n\u003cp\u003eIt's a production tool first. Built for shops running exhaust, roll cage, headers, handrail, and pie-cut work who need parts out the door faster without giving up weld quality.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngraved size index with detented positions:\u003c\/strong\u003e Every tube and pipe size is laser-engraved right on the body, and the scalloped slots lock the clamp at each one. No tape measure, no eyeballing, no test fits — slide to the size, lock it, weld. Setup is the same every single time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-adjust lever and knurled thumbscrew:\u003c\/strong\u003e Change tube sizes in seconds instead of chasing bolts with a wrench. Less setup time per part means more parts per shift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSliding double T-handle:\u003c\/strong\u003e Even clamping pressure from both sides so the tube stays centered on the axis of rotation and doesn't walk under heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost mount with quick-release fitting and pass-thru:\u003c\/strong\u003e Mounts straight to your positioner's chuck and lets long tube pass through the fixture — no length limit on the part you're welding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear-anodized aluminum with stainless hardware:\u003c\/strong\u003e Handles shop heat and abuse without corroding or galling. 4.4 lbs, so it won't overload a small positioner or fight you during setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEvery feature exists to cut setup time and eliminate re-work. Faster size changes, hands-free rotation, and repeatable centering mean cleaner welds on the first attempt, fewer parts scrapped, and real throughput gains on repeat jobs. If you're welding tube all day, this pays for itself in saved hours.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e🔧 BUNDLE \u0026amp; SAVE 10% — AUTOMATICALLY.\u003c\/strong\u003e Add any second tool from our \u003ca href=\"\/collections\/tooling\"\u003eTooling\u003c\/a\u003e lineup and 10% comes off your cart at checkout. No code needed. Pair it with the \u003ca href=\"\/products\/brockett-built-flange-welding-fixture\"\u003eBrockett Built Flange Welding Fixture\u003c\/a\u003e and save $100 on the two — same positioner, different job. The Tube Fixture spins tube and pipe; the Flange Fixture holds and purges 2-bolt, 3-bolt, V-band, and turbo flanges. Most shops running one end up wanting the other.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat makes an adjustable V-block better than a fixed one?\u003c\/strong\u003e\u003cbr\u003e\nA fixed V-block only centers straight, round, in-spec tube. Ours pivots and slides, so it centers bends, pie cuts, and irregular parts on a true axis of rotation. If your work is all straight tube, a fixed block is fine. If you cut pie sections or weld bends, a fixed block fights you on every part.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan it clamp pie cuts and bends?\u003c\/strong\u003e\u003cbr\u003e\nYes — that's what the adjustable V-block is for. It grabs short pie-cut segments and mandrel bends and still centers them so they spin true under the torch.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat size tube and pipe will it hold?\u003c\/strong\u003e\u003cbr\u003e\nRound tube from 1\" to 4\" OD in half-inch steps, and schedule pipe in 1-1\/4\", 1-1\/2\", and 2\". Every size is engraved on the body with a detented slot position, so you set it once and it repeats exactly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I have to re-center it when I change tube sizes?\u003c\/strong\u003e\u003cbr\u003e\nNo. The detented slot positions hold the correct center height for each engraved size. Slide, lock, weld.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long a piece of tube can I run in it?\u003c\/strong\u003e\u003cbr\u003e\nAny length. The pass-thru opening lets tube run straight through the fixture rather than bottoming out against it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the same as a tube clamp?\u003c\/strong\u003e\u003cbr\u003e\nNo. Tacking clamps hold two pieces in alignment while you tack. This is a rotation fixture — it mounts to a powered positioner and turns the part under the torch so you can run a continuous bead all the way around without stopping.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCapacity: 1\"–4\" OD round tube; 1-1\/4\", 1-1\/2\", 2\" schedule pipe\u003c\/li\u003e\n\u003cli\u003eV-block: Adjustable — pivots and slides to center bends, pie cuts, and irregular parts\u003c\/li\u003e\n\u003cli\u003eWeight: 4.4 lbs (est.)\u003c\/li\u003e\n\u003cli\u003eConstruction: Clear-anodized aluminum \/ stainless steel hardware\u003c\/li\u003e\n\u003cli\u003eMount: Post mount with quick-release fitting and pass-thru\u003c\/li\u003e\n\u003cli\u003eFits: Standard rotary welding positioners (3-jaw chuck)\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by a lifetime warranty against defects in materials and workmanship. If it fails from a manufacturing defect, we replace it.\u003c\/p\u003e\n\n\u003cp\u003eDesigned by Brockett Built for real production fabrication work.\u003c\/p\u003e","brand":"Brockett Built","offers":[{"title":"Default Title","offer_id":45074454773968,"sku":"BB-100-0056","price":600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/0818\/6832\/files\/EA295D35-EF3E-43CB-B77B-D74BF53C6DEC.jpg?v=1784656270","url":"https:\/\/brockettbuilt.com\/products\/tube-fixture-welding-positioner","provider":"Brockett Built","version":"1.0","type":"link"}