Ultra-heavy CNC fiber laser tube cutting machine engineered for large-diameter structural pipes (Φ90–720 mm), massive payloads up to 3,500 kg, lengths up to 12 meters, and true zero-tail scrap cutting.
The LONX LX-K73III-1212 is an industrial-grade 3 chuck tube laser cutter designed specifically for large-diameter, extra-thick industrial pipes, and massive structural profiles. Built to handle single pipes weighing up to 3,500 kg (linear density up to 292 kg/m) and raw lengths up to 12 meters, the LX-K73III delivers exceptional rigidity and dynamic cutting performance across round tubes (Φ90–720 mm), square tubes (□90×90–500×500 mm), channel steel, angle iron, and heavy I-beams.
Equipped with a heavy-duty side-mounted bed, a 730 pneumatic chuck system, and an intelligent BOCHU EtherCAT CNC controller, the LX-K73III achieves zero-tail cutting (tail length ≥0 mm), maximizing material utilization on expensive large-scale structural steel.
Constructed with a heavy-duty side-mounted bed frame welded from high-quality steel and treated with high-temperature annealing, the machine easily supports massive pipes up to 3,500 kg and linear densities up to 292 kg/m, eliminating frame deformation and resonance during prolonged heavy processing.
Equipped with a 730 pneumatic chuck system with a repeat positioning accuracy of ±0.03 mm, the machine effortlessly handles extra-large round tubes up to Φ720 mm, square tubes up to 500×500 mm, and raw tube lengths from 5,500 mm up to 12,000 mm.
The synchronized movable chuck avoidance mechanism allows seamless coordination between the chucks, enabling full-length nesting and true zero-tail cutting. This feature provides massive cost savings when processing thick-walled, high-value structural pipes.
Supports an optional high-precision bevel cutting head capable of straight, V, Y, and K-bevel cutting, streamlining beveling and welding prep into a single automated step for thick structural tubes and beams.
Optional semi-automatic batch loading (5.5m–12m) and heavy-duty slat chain unloading conveyors prevent pipe scratch damage, reduce manual handling risks, and ensure safe, continuous material discharge for short and long workpieces alike.
The LX-K73III is engineered for heavy fabrication, offshore engineering, and structural infrastructure:
Steel Structures & Infrastructure: Prefabricated large pipe trusses, columns, and bridge arches.
Transmission Towers & Power Grids: Precision intersecting hole and slot cutting on heavy steel columns.
Shipbuilding & Offshore Engineering: Heavy fluid manifolds, jacket legs, and anti-corrosive piping.
Oil, Gas & Chemical Pipelines: High-pressure thick-walled pipe cutting with weld bevel preparation.
Mining & Heavy Construction Equipment: Crane booms, chassis tubes, and heavy machinery frames.
| Specification Item | Technical Parameter / Value | Operational Details |
|---|---|---|
| Cutting Tube Range | Round: Φ90 – Φ720 mm Square: □90×90 – □500×500 mm | Cuts round/square tubes, channel steel, angle steel, and I-beams |
| Max. Single Tube Weight | 3,500 kg (Linear weight ≤ 292 kg/m) | Heavy-duty side-mounted annealed machine bed |
| Raw Tube Loading Length | 5,500 mm – 12,000 mm (12m Support) | Designed for heavy infrastructure and construction piping |
| Laser Source Power | 3,000W / 6,000W / 12,000W | High-efficiency fiber laser (Raycus / Max) with industrial chiller |
| Axis Travel (X / Y / Z) | X: 800 mm | Y: 12,500 mm | Z: 780 mm | Extended travel for long-span structural tube processing |
| Positioning Accuracy | ±0.05 mm/m | Dynamic laser interferometer calibration |
| Repeat Positioning Accuracy | ±0.03 mm | DTX-LG precision guideways & Jingte heavy racks |
| Max. Speed & Acceleration | Travel: 40 m/min | Accel: 0.3G | B-axis: 30 rpm | Optimized heavy-payload servo drive system |
| Tail Scrap Length | ≥ 0 mm (True Zero-Tail Scrap) | Movable chuck avoidance & nesting path optimization |
| Bevel Cutting Function | Optional (3D Beveling Head) | Supports multi-angle bevels for pipe welding preparation |
| Overall Dimensions | ≈ 28,875 × 3,150 × 4,200 mm | Spacious industrial layout for crane and forklift loading |
| Material | Wall Thickness | 3000W Fiber Laser | 6000W Fiber Laser | 12000W Fiber Laser |
|---|---|---|---|---|
| Carbon Steel (Assist Gas: Air / O₂) | 2.0 mm | 8.0 – 10.0 m/min (Air) | 10.0 – 12.0 m/min (Air) | 11.0 – 13.0 m/min (Air) |
| 6.0 mm | 1.2 – 2.0 m/min (O₂) | 2.0 – 2.6 m/min (O₂) | 3.8 – 5.0 m/min (Air) | |
| 12.0 mm / 25.0 mm | — | 1.0 – 1.2 m/min (O₂) | 1.5 – 1.8 m/min / 0.6 – 0.8 m/min (O₂) | |
| Stainless Steel (Assist Gas: Air / N₂) | 2.0 mm | 8.0 – 10.0 m/min (Air) | 12.0 – 14.0 m/min (Air) | 10.0 – 12.0 m/min (Air) |
| 6.0 mm | 0.8 – 1.8 m/min (Air) | 3.0 – 5.0 m/min (Air) | 3.0 – 4.0 m/min (Air) | |
| 10.0 mm / 16.0 mm | — | 1.0 – 1.5 m/min (N₂) | 1.8 – 2.0 m/min / 0.8 – 1.2 m/min (N₂) | |
| Aluminum Alloy (Assist Gas: N₂) | 2.0 mm / 6.0 mm | 6.0 – 8.0 / — | 11.0 – 13.0 / 3.0 – 4.5 m/min | 10.0 – 12.0 / 2.5 – 3.5 m/min |
| 10.0 mm / 14.0 mm | — | 1.0 – 1.5 m/min | 1.6 – 1.8 m/min / 1.2 – 1.4 m/min |
A: A 3 chuck tube laser cutter provides dynamic synchronous clamping and continuous support across the entire tube length. This prevents heavy, long tubes (up to 3,500 kg and 12m) from sagging, eliminates vibration during rotation, and enables zero-tail scrap cutting (≥0 mm) by shifting chuck positions dynamically.
A: Yes. In addition to large round (Φ90–720 mm) and square tubes (□90–500 mm), the LX-K73III supports channel steel, angle iron, and heavy I-beams with integrated profile nesting software.
A: LONX offers a 1-year whole-machine warranty, 2-year fiber laser source warranty, 2-year CNC system warranty, 24-hour service response, lifetime maintenance, and local technical support across 10+ global subsidiaries and 180+ countries.
Ultra-heavy CNC fiber laser tube cutting machine engineered for large-diameter structural pipes (Φ90–720 mm), massive payloads up to 3,500 kg, lengths up to 12 meters, and true zero-tail scrap cutting.
The LONX LX-K73III-1212 is an industrial-grade 3 chuck tube laser cutter designed specifically for large-diameter, extra-thick industrial pipes, and massive structural profiles. Built to handle single pipes weighing up to 3,500 kg (linear density up to 292 kg/m) and raw lengths up to 12 meters, the LX-K73III delivers exceptional rigidity and dynamic cutting performance across round tubes (Φ90–720 mm), square tubes (□90×90–500×500 mm), channel steel, angle iron, and heavy I-beams.
Equipped with a heavy-duty side-mounted bed, a 730 pneumatic chuck system, and an intelligent BOCHU EtherCAT CNC controller, the LX-K73III achieves zero-tail cutting (tail length ≥0 mm), maximizing material utilization on expensive large-scale structural steel.
Constructed with a heavy-duty side-mounted bed frame welded from high-quality steel and treated with high-temperature annealing, the machine easily supports massive pipes up to 3,500 kg and linear densities up to 292 kg/m, eliminating frame deformation and resonance during prolonged heavy processing.
Equipped with a 730 pneumatic chuck system with a repeat positioning accuracy of ±0.03 mm, the machine effortlessly handles extra-large round tubes up to Φ720 mm, square tubes up to 500×500 mm, and raw tube lengths from 5,500 mm up to 12,000 mm.
The synchronized movable chuck avoidance mechanism allows seamless coordination between the chucks, enabling full-length nesting and true zero-tail cutting. This feature provides massive cost savings when processing thick-walled, high-value structural pipes.
Supports an optional high-precision bevel cutting head capable of straight, V, Y, and K-bevel cutting, streamlining beveling and welding prep into a single automated step for thick structural tubes and beams.
Optional semi-automatic batch loading (5.5m–12m) and heavy-duty slat chain unloading conveyors prevent pipe scratch damage, reduce manual handling risks, and ensure safe, continuous material discharge for short and long workpieces alike.
The LX-K73III is engineered for heavy fabrication, offshore engineering, and structural infrastructure:
Steel Structures & Infrastructure: Prefabricated large pipe trusses, columns, and bridge arches.
Transmission Towers & Power Grids: Precision intersecting hole and slot cutting on heavy steel columns.
Shipbuilding & Offshore Engineering: Heavy fluid manifolds, jacket legs, and anti-corrosive piping.
Oil, Gas & Chemical Pipelines: High-pressure thick-walled pipe cutting with weld bevel preparation.
Mining & Heavy Construction Equipment: Crane booms, chassis tubes, and heavy machinery frames.
