Tube Bending Services

Rotary draw bending clamps the tube to a die and draws it around a fixed bend former, producing consistent, repeatable bends. Mandrel bending adds an internal support rod that runs through the bend zone to prevent the tube wall from collapsing or wrinkling on tight radii. For thin-wall or small-radius bends, mandrel support is usually required.

Roll bending passes the tube through a set of rollers to produce large-radius curves and sweeping bends. It suits long tubes and large centerline radii where a rotary draw die would be impractical. For tighter radii and higher repeatability, rotary draw bending is the better choice.

We bend carbon steel, stainless steel, aluminum alloys, and copper tube. Material choice affects minimum bend radius and wall thinning allowance, which our engineering team confirms at the feasibility review.

Thinner walls are more prone to collapse or wrinkling at tight radii. The relationship between tube OD, wall thickness, and bend radius determines whether mandrel support is needed. We review your drawing and confirm the minimum wall specification before quoting.

Standard production lead time is 4 to 8 weeks, with tooling and first-article timing confirmed at the quote stage. Rush programs can be reviewed case by case.

Tube bending tooling is radius-specific, so it pays off on recurring production rather than one-off parts. We will tell you at the quote stage whether your volume is a fit and recommend the most cost-effective approach.

Yes. We bend both round and square tube and pipe in steel, stainless, aluminum, and copper. Production runs on CNC tube benders for repeatable bend angle, centerline radius, and rotation across multiple bends in a single part, which keeps complex bent assemblies consistent from the first piece to the last.

Rotary draw bending clamps the tube to a rotating die and pulls it around a fixed radius, giving tighter bends and closer control over deformation. Compression bending pushes the tube around a stationary die instead, which suits simpler, larger-radius bends. Rotary draw is preferred for thin-wall parts or where the finished component needs a smooth interior surface.

Holes placed near the edge of the tube, short tabs, and tight bend radii specified out of habit rather than function are the most common offenders. The fix: if a radius or edge distance is not driven by assembly fit, it can usually be relaxed to a standard the process holds naturally, removing cost without affecting performance.

Redstone builds an inspection template by ballooning every callout on the print, including notes, material, and title block. A second pass adds checks from experience: past quality issues on similar parts, mating-part fitment, and anything the drawing fails to specify. Critical dimensions are reviewed with the production team before the run starts.

Yes. Plating and anodize add material thickness that changes bore diameter on precision holes. Type II and Type III hardcoat have different build-up, and both must be accounted for in hole sizing at design. Redstone specifies masking at the DFM stage and flags features where coating can be dropped from the spec.

Redstone catches issues before parts ship. When something does fail, the response follows a set sequence: triage, full sort of the affected lot, quarantine, then root-cause analysis before corrective action. Redstone guarantees the parts with funded rework, air-freighted replacements, or credit.