30–160 mm Precision Hydraulic Four-Die Pointing Machine for Metal Tubes – Wide-Range End Forming Without Cracking or Waste
Engineered for large-diameter and thick-wall tubes, this four-die hydraulic pointing machine delivers smooth, concentric tapers that protect drawing dies, reduce scrap, and prepare tubes for high-yield cold drawing.
DONGGUAN, China – September 29, 2026 – FangRong Precision Machinery today introduced its 30–160 mm precision hydraulic four-die pointing machine for metal tubes – a heavy-duty end-forming solution designed to bridge the gap between small-diameter pointers and ultra-large specialized equipment. The machine is engineered for tube producers who process a wide range of diameters and wall thicknesses and need a reliable, efficient way to prepare tube ends before cold drawing.
Pointing is the first and most critical step in cold drawing. If the tube end is not perfectly tapered and concentric, the drawbench carriage may slip, the drawing die may be damaged, or the tube may crack at the point. For large-diameter tubes – especially those with thick walls or high-strength alloys – these risks increase dramatically. FangRong’s four-die hydraulic pointing machine addresses these challenges with smooth, programmable force and even radial die closure.
Wide Diameter Range – 30 mm to 160 mm
The machine is designed to handle a broad spectrum of tube sizes within a single platform. With quick-change die sets and programmable recipes, manufacturers can switch between different tube diameters without lengthy setup. This flexibility is ideal for service centers, job shops, and OEMs that produce multiple tube sizes on the same line.
Parameter | Specification |
Tube OD range | 30 – 160 mm |
Wall thickness | Up to 15 mm (depending on material) |
Point length | 80 – 400 mm (programmable) |
Concentricity | ≤0.08 mm |
Reduction per pass | Up to 50% (multi-stage for larger reductions) |
Cycle time | 8 – 25 seconds (material-dependent) |
Hydraulic force | 100 – 200 tons (customizable) |
Die configuration | 4-die radial closure |
Control system | PLC with touchscreen, recipe storage |
Why Four Dies for Large-Diameter Tubes?
For large-diameter and thick-wall tubes, two-die or rotary swaging systems often struggle. They can produce faceted points, uneven wall thickness, or require excessive force that leads to cracking. The four-die radial closure system distributes forming force evenly around the tube circumference. This delivers:
Superior concentricity – ≤0.08 mm deviation from the tube axis
Smooth, burr-free surface – no faceting or die marks
Reduced risk of cracking – gradual, controlled material flow
Even die wear – longer tool life
Better thin-wall and thick-wall capability – stable forming across wall thicknesses
Built for Demanding Materials
The 30–160 mm four-die pointing machine processes a wide range of metals:
Carbon steel – 1020, 1045, A53, A106
Alloy steel – 4140, 4340, 4130
Stainless steel – 304, 316, 17-4 PH, duplex
Aluminum – 6061, 6063, 7075
Copper and brass – C11000, C12200, C36000
Titanium and specialty alloys – Grade 2, Grade 5, Inconel, Monel
Key Machine Features
Four high-tonnage hydraulic cylinders – smooth, programmable force for thick-wall tubes
Air pre-pressure plus oil pressure system – amplifies force efficiently and reduces cycle time
Integrated hydraulic station with cooling system – stable oil temperature for continuous operation
Padded gripper jaws – secure clamping without surface marking
Quick-change die sets – switch diameters in under 10 minutes
Closed-loop force monitoring – identical forming conditions every cycle
Safety interlocked guarding – full enclosure with light curtains
Data logging – cycle parameters recorded for ISO/AS9100 traceability
Applications Across Heavy Industries
Industry | Typical Tube Applications | Why Four-Die Hydraulic Pointing Helps |
Hydraulics | Cylinder tubes, piston rods | Concentric points prevent seal damage and drawing die wear |
Oil & Gas | Downhole tubing, control lines, wellhead components | Impact-free forming prevents cracking in high-strength alloys |
Power Generation | Boiler tubes, heat exchanger sections | Thick walls require high force and even die closure |
Heavy Machinery | Structural tubes, lift arms, crane components | Large diameters benefit from multi-stage, crack-free pointing |
Aerospace | Hydraulic lines, actuator components | Tight concentricity and surface integrity are critical |
Real-World Example – Large-Diameter Hydraulic Cylinder Tubes
A manufacturer of hydraulic cylinders processed 120 mm OD × 10 mm wall carbon steel tubes. Their existing rotary swager caused 10% end cracking and frequent die damage. After switching to a FangRong 30–160 mm four-die hydraulic pointing machine:
Metric | Before | After |
End cracking | 10% | 0% |
Concentricity | 0.22 mm | 0.07 mm |
Pointer die life | Baseline | +50% |
Drawbench die life | Baseline | +35% |
Scrap rate | 5.8% | 0.5% |
Payback period: 12 months.
Complete Solutions for Cold Drawing, Straightening, and Pointing
FangRong provides complete machine and solution services for cold drawing, straightening, and pointing – all customized to your specifications. Whether you need a single pointing machine or a fully integrated line with drawing and straightening, we can recommend the right configuration for your tube sizes, materials, and production targets.
Contact us to discuss your large-diameter tube pointing requirements.
Know More About Us FangRong Metallurgical Equipment Manufacturer in China since 1998. Professional in Metal Straightening machine, Cold Drawing machine, Push Pointer Drawing Machine, Automatic Three Lines Drawing Machine, Thread rolling machine, Tube-end shrinking machine, Pointing Machine, Core pipe machine, Polishing Machine etc.
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Email: frsale@dgfangrong.com frmachine001@dgfangrong.com
Whatsapp/Skype/Wechat:+8618928290716 +8613537360900
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Keywords: 30–160 mm hydraulic four-die pointing machine, large-diameter tube pointing, precision tube end forming, metal tube pointing machine, cold drawing preparation, thick-wall tube pointing, four-die hydraulic pointer, FangRong Precision Machinery.
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