Laser Tube Cutting Machine
Fiber Laser Tube Cutting Machine by Sigma Mechotronics is engineered
for high-speed, high-precision cutting of metal tubes and profiles.
– Power options from 1.5 kW to 12 kW
– Cuts round, square, rectangular and special-profile tubes
– Automatic loading and chuck clamping
– High-speed cutting with minimal material waste
– Suitable for stainless steel, MS and aluminium tubes
Tube · Pipe · Profile Sections · Made in India · ISO 9001:2015 Certified
Fiber Laser Tube & Pipe Cutting Machine – Round, Square and Profile Sections, 1.5 kW to 12 kW
A tube cutting machine is a fiber laser machine built around a chuck-and-clamp system instead of a flat bed, so the stock is gripped, fed and rotated under the cutting head rather than laid flat. That is what lets it cut round, square and rectangular tube, open channels in C, H, L and I profile, and special sections – to length, with holes, slots, notches and cope joints anywhere around the section, in one program. Sigma Mechotronics Pvt. Ltd. manufactures it from 1.5 kW to 12 kW, with maximum chuck diameters from 20 Ø to 350 Ø across two chuck models, for 3 metre and 6 metre stock lengths, with ±45° bevel cutting and automatic lubrication as standard. This page covers what the machine cuts, how to select the chuck, length and power, when a custom build is warranted, and what to plan for before it arrives.
- Power range
- 1.5kW-12kW
- Chuck diameter
- 20 Ø – 350 Ø
- Stock length
- 3 m & 6 m
- Bevel cutting
- ±45°
Tube fabrication has traditionally been a sequence of separate operations. The bandsaw cuts to length. Somebody marks out the hole positions. The drill or punch makes the holes. A grinder copes the ends so the joint sits properly against the mating tube. Each step introduces its own tolerance, and by the time the parts reach the welder, the fit-up is only as good as the worst of them.
A laser tube cutting machine collapses that sequence into one. The chuck holds and rotates the section while the head cuts, so length, mitre, notch, cope, slot and hole are all produced in a single program from one datum. Parts arrive at the welding bay already fitting, which is where the time actually gets saved – not in the cutting itself, but in everything that no longer has to be corrected afterwards.
Sigma Mechotronics Pvt. Ltd. manufactures this machine at its own plant in Ahmedabad, so the chuck model, stock length and power are specified around the sections you actually run rather than picked from a fixed catalogue. This page is written for engineers and owners specifying a tube cutting machine for production: what it cuts, how the chuck range and 3 or 6 metre length options work, what ±45° bevel cutting is worth in practice, and what to get right in the floor plan before the machine arrives.
At a Glance
Key Takeaways
The essentials, before the detail below.
Chuck-Fed, Not Flat Bed
Stock is gripped and rotated under the head, so the beam reaches every face and every angle of the section in one setup.
20 Ø to 350 Ø, Two Chuck Models
Maximum chuck diameters span 20 Ø to 350 Ø across two models – confirm both your smallest and largest section against them.
Round, Box and Open Channel
Square, rectangular and round tube, plus open channels in C, H, L and I profile, and special sections.
±45° Bevel Cutting
Weld-prep angles are cut on the machine, so edges come off ready to weld instead of going to a second bevelling operation.
3 m and 6 m Stock Lengths
Matches the lengths tube and pipe are supplied in, so material can be loaded as received rather than cut down first.
Automatic Lubrication
The feed system is lubricated automatically, reducing wear and removing a manual routine that is easy to skip on a busy shift.
Definition
What Is a Tube Cutting Machine?
A tube cutting machine is a fiber laser machine purpose-built for tube, pipe and profile stock. Instead of a flat bed, it uses a chuck-and-clamp system with a feed and support arrangement: the chuck grips the section, rotates it under the cutting head, and coordinates that rotation with the head’s travel along the length, so the beam can reach any point on any face of the profile without the part being repositioned by hand.
That single difference is what separates it from cutting tube on a saw or on a flat-bed machine with an attachment. Because the machine knows where the section is rotationally at every moment, it can cut a hole on the top face, a slot on the side, a cope at the end and a mitre on the far end – all referenced to the same datum, all in one program, with no marking out and no re-fixturing between operations. On a fabricated frame with dozens of joints, holding one datum across every feature is what keeps the assembly square.
The machine handles mild and carbon steel, stainless steel and aluminium sections, with titanium, brass and copper cut where the head is rated for reflective material. It is dedicated to tube, pipe and profile stock and does not cut flat sheet or plate. Automatic lubrication keeps the feed system serviced through long runs, and ±45° bevel cutting produces weld-ready edges directly off the machine.
The Four Systems That Define It
01
Chuck & Clamp
Grips and rotates the section under the head, holding it concentric so features land where the program says they will.
02
Feed & Support
Carries 3 metre and 6 metre lengths through the machine without sag, which is what keeps accuracy consistent along the whole bar.
03
Bevel Head
Cuts at ±45° to the section face, producing weld-prep geometry as part of the same program rather than a later operation.
04
Automatic Lubrication
Services the feed system on schedule without operator intervention, reducing wear across continuous production.
Specifications
Machine Specification at a Glance
| Power range | 1.5 kW – 12 kW |
| Chuck diameter | Maximum chuck diameters from 20 Ø to 350 Ø, across 2 chuck models |
| Tube / pipe length | 3 metre & 6 metre |
| Sections cut | Square, rectangular and round tube; open channels in C, H, L and I profile; special sections |
| Bevel cutting | ±45° |
| Lubrication | Automatic, to minimise wear on the feed system |
| Materials | Mild & carbon steel, stainless steel, aluminium; titanium, brass & copper with a reflective-rated head |
Stock Formats
Which Sections the Machine Cuts
Closed tube and open channel behave differently under a laser, and a machine that handles both covers most of what a structural or fabrication shop buys.
| Section | What It Covers | Typical Application |
|---|---|---|
| Round | Round tube and pipe within the chuck range | Railing, handrails, frames, fluid and structural pipework |
| Square | Square hollow section | Furniture and equipment frames, gates, light structural work |
| Rectangular | Rectangular hollow section | Chassis and base frames, racking, machine structures |
| C & L | Open channel and angle profile | Purlins, brackets, supports, frames built from open section |
| H & I | Beam profiles with parallel flanges and a web | Structural steel members needing holes, notches and end preparation |
| Special | Non-standard and customer-specific profiles | Proprietary extrusions and rolled sections used in your own product |
If you run a special section – send us the profile drawing along with your inquiry rather than a description. Non-standard profiles are the one case where clamping and support have to be confirmed against the actual geometry before a machine is specified, and a drawing settles it immediately.
Standard & Custom
Standard Build Options, Plus Custom Machines Built to Order
Sigma Mechotronics Pvt. Ltd. builds this machine in standard configurations and also manufactures custom machines to a customer’s requirement. Three choices define the standard build – chuck, length and power – and they are best decided in that order.
Standard Build Options
| Option | What Is Available | How to Decide It |
|---|---|---|
| Chuck model | Two chuck models, covering maximum diameters from 20 Ø up to 350 Ø between them | List your smallest and your largest regular section, not just the largest. The two models cover different parts of the range, so tell us both ends and we will confirm which model fits your work. |
| Stock length | 3 metre or 6 metre | Match the length your material actually arrives in. Buying 6 metre stock for a 3 metre machine adds a cutting-down operation and offcut waste to every bar. |
| Laser power | 1.5 kW to 12 kW | Set it from wall thickness and the speed you need, not from section diameter – a large thin-wall tube asks less of the laser than a small heavy-wall one. |
Custom Machines
Where the standard configurations do not suit the work or the building, Sigma Mechotronics Pvt. Ltd. manufactures the machine to a customer-specified requirement. Because it is built in house, this is a build-to-drawing job agreed before manufacture rather than a catalogue variant selected from a list.
| When a Custom Build Is Justified | Why the Standard Options Fall Short |
|---|---|
| Your sections sit outside or awkwardly across the standard chuck range | A section that only just fits, or one that spans both chuck models, is a daily handling problem rather than a one-off inconvenience. |
| Your stock length is neither 3 nor 6 metres | Where material is supplied or pre-cut to another length, matching the machine to it removes an entire operation from the flow. |
| The building cannot take a standard machine’s run | A 6 metre machine needs matching infeed and outfeed clearance. Bay length, column spacing or a shutter position can rule that out even when the machine itself is right. |
| The machine has to sit in an existing production line | Where fixed upstream and downstream equipment sets the flow, loading and unloading have to match that layout rather than the reverse. |
| You run one dominant special profile at volume | Clamping and support built around a single repeating geometry cut handling time on every bar, which compounds across the machine’s life. |
What to send us for a custom build – your full list of regular sections with shape, size and wall thickness, your smallest and largest diameters, the length your stock is supplied in, material and grade, your typical batch size, and a shop-floor drawing showing available space including the clear run for infeed and outfeed. Add profile drawings for any special sections. That is enough for our engineering team to confirm whether a standard configuration already covers you or a custom build is genuinely warranted.
Weld Preparation
What ±45° Bevel Cutting Is Worth in Practice
Bevel cutting means the head can cut at an angle to the section face rather than square to it, through ±45°. In fabrication terms, that is weld preparation: the angled edge that lets a welder achieve full penetration on a thicker-wall joint, produced on the laser as part of the cutting program instead of by a grinder afterwards.
The saving is not only the grinding time. A hand-prepared bevel varies from part to part, and that variation shows up as inconsistent weld penetration and rework on the joints that matter most. A cut bevel is the same on the first part and the five hundredth, which is what makes weld quality repeatable across a batch rather than dependent on who prepared the edge.
The same capability produces mitred ends for corner joints and angled cuts for frames that are not square – work that would otherwise mean a second setup on another machine. If your drawings contain angled joints, bevelled edges or full-penetration welds on section, this is the feature that decides how much of the job stays on one machine.
Worth checking before you order – look through your current drawings for how many joints are hand-prepared today. Shops that have never had bevel capability often design around not having it, so the value only becomes visible once the drawings are reviewed with the machine in mind. Send us a typical assembly drawing and we will point out which features the machine would produce directly.
1.5 kW to 12 kW
How to Select Laser Power
On a tube cutting machine, power is set by wall thickness and the cutting speed you need – not by the diameter of the section. A 300 Ø thin-wall tube asks less of the laser than a 60 Ø heavy-wall one, so specify against the thickest wall you must cut regularly.
| Power Band | Generally Suits | Where It Struggles |
|---|---|---|
| 1.5 kW – 3 kW | Thin-wall tube and light section – railing, furniture, gates, general light fabrication | Heavy-wall structural section and thick pipe |
| 4 kW – 6 kW | The general production middle – structural tube, pipe and open channel at commercial speed | The heaviest sections at high throughput |
| 8 kW – 12 kW | Heavy-wall structural section, thick pipe and high-volume production | Nothing capability-wise within the range – it is capital and running cost, so buy it where wall thickness or throughput demands it |
Power is also the specification that has to account for what the installation around the machine can support – connected electrical load, chiller and cooling capacity, assist gas consumption and supply arrangement, and extraction sizing all scale with the laser source you choose. Our engineering team works through those points with you before quoting, so the machine that arrives suits the plant it has to run in.
Expert note on assist gas and reflective metals – oxygen gives the most economical cut on mild steel, nitrogen gives a clean, oxide-free edge on stainless steel and aluminium at higher gas cost, and compressed air suits thinner-wall work. Aluminium, brass and copper are highly reflective at the fiber wavelength, so confirm your cutting head is back-reflection protected before running these regularly. Exact cutting thickness and speed depend on material grade, gas and configuration – treat the table above as a starting reference and ask us for a section-specific recommendation.
The Range
How This Machine Sits Against Our Other Cutting Configurations
The Sigma Mechotronics Pvt. Ltd. fiber laser cutting machine range covers several configurations. What separates them is body type, automation and the stock format each one is built to hold.
| Configuration | Body & Stock Format | Built For |
|---|---|---|
| Dedicated Tube Cutting | Chuck-fed, tube and profile only, 3 m and 6 m, 1.5-12 kW | Volume tube, pipe and profile fabrication with bevel and section work – this one does not cut flat sheet |
| Flat Bed + Pipe Attachment | Open type flat bed plus rotary tube attachment | Shops whose drawings contain both flat parts and section, on one machine |
| Single Pallet | Open type, one bed, manual load/unload | Mixed flat job work, crane-loaded and awkward stock |
| Auto Pallet Changer | Open type, two beds, automatic pallet swap | Repeat-batch flat production where machine utilisation drives cost per part |
| Close Body | Fully enclosed cabin, manual load/unload | Shared floors where beam and fume containment are the priority |
Four Checks
How to Specify the Right Tube Cutting Machine
Work through these in order. Each narrows the specification, and taking them out of order is how buyers end up with a machine that fits the brochure but not the floor.
- 1
Write Down Your Section List, Both Ends of It
Every section you cut regularly – shape, outside size and wall thickness – with your smallest and your largest identified. This decides the chuck model, and the smallest section matters as much as the largest: a machine that grips 350 Ø is not automatically the right one for your 25 Ø work.
- 2
Match the Length Option to Your Supplied Stock
If your tube arrives in 6 metre lengths, a 6 metre machine takes it as delivered. Choosing 3 metre to save floor space means cutting every bar down first, which adds an operation and creates offcuts you then have to nest or scrap.
- 3
Set Power From Wall Thickness
Take the thickest wall you must cut regularly and the speed you need on your highest-volume section. Those two numbers set the power band between 1.5 kW and 12 kW. Diameter is a chuck question, not a power question.
- 4
Draw the Full Run Into the Floor Plan
A 6 metre machine needs clear infeed length for loading full bars and clear outfeed for finished parts – well beyond the machine’s own footprint. Add the safety zone, a staging area for bar stock, the control cabinet, the chiller and the extraction run before you sign.
Avoid These Buying Mistakes
6 Mistakes Buyers Make on a Tube Cutting Machine
1
Specifying the chuck on your largest section only. The two chuck models cover different parts of the 20 Ø to 350 Ø range. Give us both ends of your section list, or you risk a machine that handles your biggest job and fights your most common one.
2
Planning space for the machine but not the bar. A 6 metre length needs clear infeed and outfeed beyond the machine body. This is the most common layout error on tube machines, and it is discovered at installation.
3
Choosing 3 metre because the bay is tight, when stock arrives at 6 metre. Every bar then needs cutting down first. The floor space saved is paid back in handling time and offcut waste on every single order.
4
Setting power from diameter instead of wall thickness. Wall thickness is what the laser has to get through. A large thin-wall section is an easier cut than a small heavy-wall one at the same power.
5
Keeping the old drawings after buying the machine. Parts designed around a bandsaw and a grinder do not use notching, coping or ±45° bevel. Review the drawings with the machine’s capability in mind or you keep paying for operations it would have removed.
6
Comparing quotes on machine price alone. A lower-priced machine without India-based spares, service engineers and a real warranty is not a saving the first time it needs unplanned maintenance.
Where It Is Used
Industries and Applications
Wherever a product is welded up from section rather than sheet, this machine covers the whole cutting list from one setup.
- Structural Steel Fabrication
- Railing, Gates & Architectural Metalwork
- Steel Furniture & Frame Manufacturing
- Gym & Fitness Equipment
- Agricultural Equipment Manufacturing
- Automotive & Auto-Ancillary
- Elevator, Racking & Storage Systems
- Machine Building & Job Work
- Pipe, Fitting & Fluid Handling
- Scaffolding & Formwork Systems
Typical output is section cut to length with mitred and bevelled ends, cope joints, notches, slots and holes positioned anywhere around the profile – frames, chassis, railings, purlins, brackets, supports and structural members that arrive at the welding bay ready to assemble. Materials are mild and carbon steel, stainless steel and aluminium, with titanium, brass and copper cut on a reflective-rated head. Fiber laser is the correct technology for these metals and is not the right cutting technology for plastics, rubber, wood or glass.
Keeping It Running
Maintenance and Safety in Practice
Automatic lubrication removes one routine from the list, but the chuck and feed system are the parts that decide whether accuracy holds over the years.
| Routine Task | Typical Frequency |
|---|---|
| Protective window and lens cleaning, nozzle check and replacement | Daily to weekly, depending on usage |
| Chuck jaw inspection and cleaning | Regular – worn or dirty jaws let the section slip, and slip shows up as position error |
| Feed and support system check, swarf and offcut clearing | Regular – build-up along the run affects how the bar sits and feeds |
| Automatic lubrication system – reservoir level and delivery check | Periodic – the system services the machine, but it still needs topping up and verifying |
| Extraction and filter check | Regular, and sized for the material being cut |
| Chiller and cooling system check, full technical inspection | Cooling regularly, especially before multi-shift runs; inspection annually |
Safety, in practice: a rotating 6 metre bar is moving machinery along its whole length, so the infeed and outfeed run must be clear of people, stock and obstructions before a program starts – the hazard zone is the full run, not just the cutting head. Long bars need proper support rather than improvised packing, since an unsupported end that whips is dangerous as well as inaccurate. Wavelength-rated eye protection and a demarcated, guarded working area apply as they do across the range, and fume extraction matters wherever coated, painted or galvanised section is cut. Interlocks and guards exist to stop the beam firing during an unsafe condition and are never to be bypassed, including during setup. Consumables in normal operation are assist gas, nozzles and protective windows.
Manufacturer, Not Trader
Why Buy the Tube Cutting Machine From Sigma Mechotronics Pvt. Ltd.
Building our own machines shows in how they are engineered, how they hold up under Indian production conditions, and how they are supported for as long as they are on your floor.
Built in India, Including Custom Machines
Because the machine is manufactured at our own Ahmedabad plant rather than imported and rebadged, the chuck, the length and the clamping for a special profile are specified together around your sections – an engineering conversation with the people who build the machine, not a change request routed through an overseas supplier.
ISO 9001:2015 Certified, MSME Registered
Sigma Mechotronics Pvt. Ltd. is a registered Indian private limited company, GST registered, ISO 9001:2015 certified and MSME registered. Every purchase comes with a proper GST tax invoice under your GSTIN for ITC claims and capital equipment accounting.
2-Year Warranty, Spares Held in India
A 2-year warranty covers manufacturing defects in the machine body, laser delivery system, control electronics, motion system and the chuck and feed mechanism. Critical spares are held locally rather than ordered on an international shipping cycle.
Consultation, Installation and Training
We confirm the specification against your section list, material and shop drawing before you order, then install and commission the machine at your premises, set parameters for your material, and train your operators on chuck setup, bevel programming and section handling before handover.
Straight Answers
Frequently Asked Questions
The questions manufacturers ask most before ordering a tube cutting machine.
A tube cutting machine is a fiber laser machine built around a chuck-and-clamp system rather than a flat bed. The chuck grips and rotates the section under the cutting head while the head travels along its length, so the beam can reach any face and any angle of the profile in one setup – cutting to length, mitring, notching, coping, slotting and drilling in a single program. Sigma Mechotronics Pvt. Ltd. builds it from 1.5 kW to 12 kW, with maximum chuck diameters from 20 Ø to 350 Ø across two chuck models, for 3 metre and 6 metre stock.
Square, rectangular and round tube and pipe, open channels in C, H, L and I profile, and special sections. Closed tube and open channel are both handled, which covers most of what a structural or fabrication shop buys. For a non-standard or proprietary profile, send the drawing with your inquiry – clamping and support are confirmed against the actual geometry before the machine is specified.
Maximum chuck diameters run from 20 Ø to 350 Ø, across two chuck models that cover different parts of that range between them. Because of that, the right question is not only how large your biggest section is but how small your smallest one is – send us both ends of your section list and we will confirm which chuck model suits your work before you order.
3 metre and 6 metre lengths, matching the lengths tube and pipe are normally supplied in – so bar can be loaded as received rather than cut down first. Choose the option that matches your incoming stock, and remember that a 6 metre machine needs clear infeed and outfeed space along its whole run, well beyond the machine’s own footprint.
It lets the head cut at an angle to the section face rather than square to it, through ±45°. That produces weld preparation – the angled edge needed for full penetration on thicker-wall joints – and mitred ends for corner joints, directly on the machine instead of at a grinder afterwards. Beyond the time saved, a cut bevel is identical on every part, so weld penetration stays consistent across a batch rather than varying with whoever prepared the edge.
No. This machine is dedicated to tube, pipe and profile stock – the chuck-and-clamp system is what gives it the section capability, and it replaces the flat bed rather than sitting alongside one. If your drawings contain flat parts as well as section, tell us at the inquiry stage and we will go through the options in our cutting range with you.
Power follows wall thickness and the speed you need, not section diameter – a large thin-wall tube is an easier cut than a small heavy-wall one. Broadly, 1.5 kW to 3 kW suits thin-wall tube and light section such as railing and furniture work, 4 kW to 6 kW covers the general production middle across structural tube, pipe and open channel, and 8 kW to 12 kW is for heavy-wall section and high-volume production. Exact thickness and speed vary with material grade, assist gas and finish, so confirm your specific sections with our applications team.
Yes. Sigma Mechotronics Pvt. Ltd. manufactures this machine to a customer’s requirement as well as in standard configurations. A custom build makes sense when your sections sit outside or awkwardly across the standard chuck range, when your stock length is neither 3 nor 6 metres, when the building cannot take a standard machine’s run, when the machine has to fit an existing production line, or when one dominant special profile runs at volume. Send your section list, stock length, material and a shop-floor drawing, and our engineering team will confirm the right build.
Considerably more than the machine body, and the requirement is length rather than area. Budget for clear infeed to load a full bar, clear outfeed for finished parts, the demarcated safety zone along the run, a staging area for bar stock, plus the control cabinet, chiller and extraction ducting. We confirm exact footprint and clearance against your shop drawing during the pre-order consultation, since it varies with the 3 metre or 6 metre option.
Mild and carbon steel, stainless steel and aluminium sections are the core materials, with titanium, brass and copper also cut – the last two being highly reflective at the fiber wavelength, so a back-reflection protected cutting head should be confirmed if you run them regularly. Fiber laser is not the correct cutting technology for plastics, rubber, wood, leather or glass.
Automatic lubrication services the feed system on schedule without operator intervention, which minimises wear and removes a manual routine that is easy to skip on a busy shift – but the system itself still needs its reservoir level and delivery checked periodically. Beyond that: chuck jaw inspection and cleaning, since worn or dirty jaws let the section slip and slip becomes position error; clearing swarf and offcuts along the feed run; standard lens and nozzle checks; extraction and filter checks; cooling system checks; and an annual technical inspection.
Price depends on laser power, chuck model, stock length option, whether the build is standard or custom, and the other options specified – a 1.5 kW machine on the smaller chuck for 3 metre stock and a 12 kW machine on the larger chuck for 6 metre stock sit at very different points in the same range. We quote against a confirmed specification rather than publishing a fixed figure, because an incorrectly specified machine is a poor investment at any price. Send your section list, wall thickness, material and stock length for a detailed quotation.
A 2-year warranty covering manufacturing defects in the machine body, laser delivery system, control electronics, motion system and the chuck and feed mechanism, handled directly by Sigma Mechotronics Pvt. Ltd. rather than through an agent or overseas supplier. Installation and commissioning at your premises, parameter setting for your material, and operator training on chuck setup, bevel programming and section handling are part of the supply, and spares are held in India. Every purchase comes with a GST tax invoice under your GSTIN.
Yes, and on this machine we particularly recommend bringing your actual sections rather than a similar size, since shape, wall thickness and how the profile clamps are what decide the result. If you have an assembly with notched or bevelled joints, bring that drawing too – a trial on your own material and geometry is the most reliable way to confirm the machine meets your specification before committing capital. Facility visits to our Ahmedabad plant are welcome by appointment.
The Full Range
Related Machines From Sigma Mechotronics Pvt. Ltd.
Get a Tube Cutting Machine Specified for Your Sections
Send us your section list with shapes, sizes and wall thickness, your smallest and largest diameters, the length your stock arrives in, your material and grade, and a drawing of the space the machine has to fit into including the clear run for infeed and outfeed. Our team will confirm the right chuck model, length and power – or whether a custom build is the better answer – and come back with a specification and quotation built around your actual work.
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