Welding Heads

Our flash butt welding heads are the optimal solution for high-performance and
durable rail jointing. Built for demanding field conditions, the equipment ensures
consistent quality and meets international standards for rail welding.

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RW20

  • Voltage: 
    380VAC±10%, 50Hz
    440VAC±10%,
    60Hz
  • Power Supply: ≥400 KVA
  • Primary Current (50% Duty Cycle):
    540 Amps
  • Power (50% Duty Cycle): 210 KVA
  • Hydraulic System Operating Pressure
    22 MPa
  • Settling Force: 1000 KN
  • Clamping Force: 2500 KN
  • Weight: 2900 KG
  • Dimensions (L × W × H):
    1590 × 965 × 1100
    mm
  • Productivity:
    Up to 12 welds per hour
    (normal flashing)
    Up to 18 welds per hour (pulse
    flashing)
  • Stroke: 90-100 mm

RW22

  • Voltage:
    380VAC±10%, 50Hz
    440VAC±10%,
    60Hz
  • Power Supply: ≥400 KVA
  • Primary Current (50% Duty Cycle):
    540 Amps
  • Power (50% Duty Cycle): 210 KVA
  • Hydraulic System Operating Pressure 22 MPa
  • Settling Force: 1200 KN
  • Clamping Force: 2900 KN
  • Weight: 3100 KG
  • Dimensions (L × W × H):
    1945 × 1060 ×
    1120 mm
  • Productivity:
    Up to 12 welds per hour (normal flashing)
    Up to
    18 welds per hour (pulse flashing)
  • Stroke: 150 mm

RW30

  • Voltage: 380VAC±10%, 50Hz 440VAC±10%, 60Hz
  • Power Supply: ≥400 KVA
  • Primary Current (50% Duty Cycle): 540 Amps
  • Power (50% Duty Cycle): 210 KVA
  • Hydraulic System Operating Pressure 22 MPa
  • Settling Force: 1200 KN
  • Clamping Force: 2900 KN
  • Weight: 3300 KG
  • Dimensions (L × W × H): 2020 × 1260 × 1120 mm
  • Productivity: Up to 12 welds per hour (normal flashing) Up to 18 welds per hour (pulse flashing)
  • Stroke: 200 mm

RW50

  • Voltage: 380VAC±10%, 50Hz 440VAC±10%, 60Hz
  • Power Supply: ≥400 KVA
  • Primary Current (50% Duty Cycle): 540 Amps
  • Power (50% Duty Cycle): 210 KVA
  • Hydraulic System Operating Pressure 22 MPa
  • Settling Force: 1200 KN
  • Clamping Force: 2900 KN
  • Weight: 3400 KG
  • Dimensions (L × W × H): 1970 × 1060 × 1150 mm
  • Productivity: Up to 12 welds per hour (normal flashing) Up to 18 welds per hour (pulse flashing)
  • Stroke: 250 mm

RW1060

  • Voltage: 380VAC±10%, 50Hz 440VAC±10%, 60Hz
  • Power Supply: ≥400 KVA
  • Primary Current (50% Duty Cycle): 540 Amps
  • Power (50% Duty Cycle): 236 kVA
  • Hydraulic System Operating Pressure 22 MPa
  • Settling Force: 618 kN
  • Clamping Force: 1540 kN
  • Weight: 3300 kg
  • Dimensions (L × W × H): 1590 × 965 × 1100 mm
  • Productivity: Up to 12 welds per hour (normal flashing) Up to 18 welds per hour (pulse flashing)
  • Stroke: 90-100 mm
Main specifications RW20 RW22 RW30 RW50 RW1060
Rated main voltage 380/460
Mains frequency 50/60 Hz
Supply power >400KVA
Rated primary current (50% Duty Cycle) 540 Amps 540 Amps 540 Amps 540 Amps 540 Amps
Maximum secondary current 67 kA 67 kA 67 kA 67 kA 58 kA
Power at DC = 50% 211 kVA 211 kVA 211 kVA 211 kVA 236 kVA
Maximum hydraulic pressure 3000 PSI
Maximum upsetting force 1000 kN 1200 kN 1200 kN 1200 kN 618 kN
Maximum clamping force 2500 kN 2500 kN 2500 kN 2500 kN 1540 kN
Upsetting Cylinder Stroke 100 mm 150 mm 200 mm 250 mm 100 mm
Welding head weight 3200 kg 3500 kg 3300 kg 3500 kg 3300 kg
Rail length max. 600 m unlimited
Rail cross sections Up to 12000 mm²
Production capacity Up to 18 welds/hr

Cost-Effective and Reliable

FBW technology minimizes consumable usage, extends weld lifespan, and reduces manual labor – making our equipment a smart investment for large-scale infrastructure and rail modernization projects.

Highest Productivity

Up to 60 welds per shift (0.54 km with
18m rail length).

Maximum Strength

100% tensile strength compared to
parent rail.

Lowest Defect Rate

8–10 times fewer defects than AT or
Arc welding.

Minimal Heat-Affected Zone

Only 20–45 mm, preserving steel
integrity.

Reduced Time & Cost

Shortest prep and post-weld time,
lowest welding cost.

Seamless Integration with RW Products Ecosystem

Our welding heads are fully compatible with:

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