Aluminum Extruded Tube & Bar
Aluminum Extruded Tube & Bar
Round, square, rectangular and shaped aluminum extruded tubes and solid bars — hollow profiles, pipes and custom sections for structural, thermal and bending applications, finished to your spec.
From billet to a consistent section
An extruded tube or bar is the same alloy, same section, meter after meter — the upstream of most of our bending and machining work.
Extrusion is the natural way to make a long, constant-cross-section part in aluminum: a hollow tube, a solid bar, or a shaped profile with internal cavities a rolling mill cannot produce. Because the section is tooled once, every length is identical, which matters when the tube is later bent, machined or welded in volume.
One thing to know about extruded tube: it is formed by a bridge or porthole die, so there is a seam (weld line) where the metal rejoins inside the hollow. For most structural and thermal uses this is fine. Where a part needs a fully homogeneous bore — high-pressure fluid, a critical fatigue path — a drawn or seamless tube is the better choice. We can advise which applies to your drawing.
Shapes we extrude
Matching the cross-section to the job.
Round tube
Aluminum extruded tube in round section for frames, fluid paths and bending stock.
Square & rectangular tube
Box sections for structural frames and enclosures where flat faces simplify joining and mounting.
Solid bar
Aluminum extruded bar — rectangular and shaped bars for machined parts and load paths.
Pipe
Aluminum extruded pipe for low-pressure fluid and conduit; specify pressure if it carries media.
Shaped & oval
Non-standard hollow and solid profiles — oval, D-section, multi-cavity — tooled to your drawing.
Heat-exchanger tube
Tubes with internal channels or thin walls for thermal transfer; pair with our thermal work.
Typical capabilities
Indicative ranges; exact OD / ID, wall and tolerance are confirmed against your drawing and press.
Alloys
6061 / 6063 typical; 6082 for strength. Tempers T5 / T6 per application.
Size range
Outer diameters across the common small-to-mid range; profile width to ~350 mm flat (250 mm circumscribed diameter) on our 3600T press.
Wall thickness
Minimum wall typically ≥ 1.0 mm; thicker on structural tube. Thin-wall hollow needs die care.
Ovality & bore
Ovality and ID/OD controlled to EN 755 or your tighter print. Bridge-die seam present on hollow sections.
Downstream
Bent (tube bending), CNC cut, welded or anodized/powder coated as one flow.
Seamless option
Where a homogeneous bore is required, we advise drawn / seamless tube rather than extruded.
Capability figures are conventional in-house ranges (presses 600–3600T). OD / ID, wall, ovality and seam handling are confirmed against your drawing before tooling.
Design notes for tubes and bars
What changes cost and yield.
Wall vs bend. If the tube will be bent, keep the wall uniform and not too thin — thin, variable walls wrinkle or collapse. We size bend radius to wall (R/D ≥ 1.5 typical) so the section stays round.
Seam awareness. For a hollow that carries pressure or fatigue, decide early whether the bridge-die seam is acceptable. If not, plan for drawn/seamless and we will source or advise.
Tolerance on bore. Tight ID tolerance on an extruded hollow is harder than on the OD. If the bore must be precise, design the feature as machined, or accept EN 755 general class on the inside.
Length and cut. Extrusion runs long; we cut to length and can chamfer, drill or tap the ends in the same flow.
Questions buyers ask
Short answers before you send a drawing.
Extruded vs drawn aluminum tube — which?
Extruded tube is formed straight from the billet through a die: fast and cheap for most structural and thermal sections, but it carries a bridge-die seam inside the hollow and looser bore tolerance. Drawn (or seamless) tube starts from a hollow shell and is pulled through a die: a homogeneous wall, tighter ID/OD and no seam, at higher cost. Choose extruded for frames, heatsinks and low-pressure use; choose drawn/seamless for pressure, fatigue or a critical bore.
Seamless vs extruded tube?
Extruded hollow tube has an internal weld line from the porthole die; it is fine for the large majority of structural and thermal jobs. "Seamless" usually means a drawn or pierced tube with no seam, used where pressure or fatigue rules out a weld line. If your drawing specifies seamless, tell us and we plan the source accordingly.
What wall thickness and diameters can you extrude?
Minimum wall is typically ≥ 1.0 mm, rising with section complexity; outer diameters span the common small-to-mid range and profile width runs to ~350 mm flat (250 mm circumscribed diameter) on our 3600T press. Exact OD / ID and wall are confirmed against your drawing and press before tooling.
Can you bend and finish the tube too?
Yes. Tube is the upstream of our bending service; we can extrude, bend, CNC, weld and anodize or powder coat in one flow so the finished part matches the drawing without a second supplier.
Need extruded tube or bar to spec?
Send the drawing — alloy, section, wall and any bend or finish, and we return a DFM review and quote.