Custom Online Pipe Bending
CipherFab's Pipe Bending service provides precision rotary draw and mandrel bending for pipe and tube stock — producing three-dimensional bent assemblies for structural frames, fluid routing systems, handrails, roll cages, exhaust systems, and hydraulic lines.
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Pipe Bending Service
CipherFab's Pipe Bending service provides precision rotary draw and mandrel bending for pipe and tube stock — producing three-dimensional bent assemblies for structural frames, fluid routing systems, handrails, roll cages, exhaust systems, and hydraulic lines. Pipe bending combines laser-cut features (holes, slots, and end profiles) with precision bending in a single managed service — so complex multi-feature bent tube assemblies are designed, quoted, and delivered as finished components from one platform. CipherFab provides instant quotes on Pipe bending with DFM feedback on every uploaded file.
Recommended Materials for Pipe Bending
Materials supported for this capability.
Pipe Bending
Available for round, square, and rectangular tube and pipe profiles in the following materials.
- Round Tube / Pipe Aluminium 6061
- Stainless Steel 304
- Stainless Steel 316
- Mild Steel DOM
- Alloy Steel 4130 Chromoly
- Carbon Steel A53 / A106
- Square & Rectangular Tube Aluminium 6061
- Stainless Steel 304
- Mild Steel A500 Grade B
- Available Outside Diameters (Round Tube) 0.250″
- 0.375″
- 0.500″
- 0.625″
- 0.750″
- 0.875″
- 1.000″
- 1.125″
- 1.250″
- 1.500″
- 1.750″
- 2.000″
- 2.500″
- 3.000″ and above on request
Tolerance Standards for Pipe Bending
General tolerance information for this capability.
Pipe Bending
| Description | General Tolerance |
|---|---|
| Angularity | ±2° per bend |
| Overall Tube Envelope (best fit) | ±0.125″ |
| Tube End Point Tolerance | ±0.063″ |
| Ovality at Bend (rotary draw) | Not to exceed 10% of averaged measured OD (5–8% typical) |
| Ovality at Bend (mandrel) | Not to exceed 8% of averaged measured OD |
| Wall Thinning at Bend (extrados) | Wall stretches on outer radius; 15–20% wall thinning typical at 2× CLR |
| Tolerances Cumulative | Tolerances are cumulative across multi-bend tube assemblies |
| Min Distance Between Bends (OD < 1″) | 2× OD |
| Min Distance Between Bends (OD 1″–2″) | 3× OD |
| Min Distance Between Bends (OD > 2″) | 4× OD |
| Recommended Min CLR | 2× tube OD for rotary draw; 1.5× with mandrel |
| Cut Edge Condition | Normal-to-surface default; bevel cuts available on request |
| Pipe Bending — Combined Laser Cutting + Bending | CipherFab's Pipe service manages laser cutting and bending as an integrated workflow — tube profiles are laser cut with holes, slots, end profiles, and mitre cuts, then bent to the specified 3D geometry in the correct sequence. This eliminates the dimensional errors that occur when laser cutting is performed on already-bent tube, and removes the need to manage two separate operations across two vendors. |
| Operation Sequence | Details |
| 1. Tube stock supplied | DOM, HREW, CREW, seamless, or welded tube per drawing specification |
| 2. Laser cut features applied | Holes, slots, end profiles, mitre cuts, and saddle joints cut before bending |
| 3. Tube bent to 3D geometry | Rotary draw or mandrel bending to drawing bend table |
| 4. Post-bend inspection | Angularity, ovality, and dimensional check against drawing or CMM fixture |
| 5. Finishing (if required) | Deburring, powder coating, anodising, or passivation available |
| 6. Weld assembly (if required) | Multi-tube structural assemblies welded and inspected as a finished subassembly |
Design Guide: Pipe Bending
We have compiled our best tips into this guide to help you understand Pipe bending processes, how to design for rotary draw and mandrel bending, CLR guidelines by tube OD, minimum distance between bends, weld seam orientation through bends, how to combine laser cut features with bent tube geometry, multi-bend assembly design, and how to specify bend tables and 3D tube geometry for accurate manufacturing.
Advantages of Pipe Bending
Bent tube assemblies eliminate weld joints at every direction change — reducing part count, fabrication time, leak paths in fluid systems, and the risk of weld-induced distortion in structural frames. A single bent tube component replaces what would otherwise be three or four straight sections with mitred weld joints — each requiring layout, tacking, full-weld, inspection, and post-weld dressing. CipherFab's Pipe bending service combines precision laser cutting and rotary draw or mandrel bending under one managed operation — so complex three-dimensional tube assemblies with pre-cut holes, slots, and end profiles are produced as finished components from a single order, without managing two separate vendor relationships or coordinating the correct sequence of cut-before-bend operations. From hydraulic line assemblies and roll cage frames to structural handrails and fluid routing systems, CipherFab's Pipe service delivers the quality, dimensional consistency, and lead time that complex bent tube assemblies demand.
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