Processing Finishing Service Centers

Carbon, stainless and specialty alloys: casting, hot and cold rolling, annealing, pickling, coating, slitting, cutting.

Trusted by leading steel producers worldwide for precision measurement and control across the entire production chain

Are You Worried About Your Coils Feeding Your Line Are Not in Thickness Tolerance?
Coil thickness tolerance is critical in metal processing: even small deviations cause defective profiles, accelerate tool wear, and raise costs. LGE offers end-to-end measurement and control solutions for steel mills - AGC, thickness, width, flatness, roughness, shape detection, weld inspection, and fluid control - backed by 30+ years of precision and reliability.

Automatic Gauge Control

  • Technology:X-ray / Laser thickness gauges
  • Response Time:<2 ms
  • Tolerance:±0.1% of nominal
  • Actuators:Roll gap, bending, speed, tension

Thickness Measurement (QC)

  • Range:0.1 mm - 200 mm
  • Accuracy:From ±0.5 microns to ±0.05%
  • Technologies:Laser, X-ray
  • Application:Hot/Cold rolling, QC lab

Width Measurement

  • Range:200 mm - 3000 mm
  • Accuracy:±0.2 mm
  • Technology:Dual-edge laser triangulation
  • Edge Tracking:±1 mm lateral movement

Flatness & Planarity

  • Zones:16 to 120 across strip
  • Accuracy:±1 I-unit
  • Defect Types:Center wave, edge wave, quarter buckle
  • AFC Integration:Bending, shifting, cooling zones

Roughness Measurement

  • Parameters:Ra, Rz, Rmax, Rp, Rv
  • Technology:Laser scattering / Confocal
  • Application:Surface finish QC, texture analysis
  • Speed:Inline up to 20 m/s

Pipe & Profile Shape

  • Products:Pipes, tubes, beams, rails, bars
  • Parameters:OD, ID, ovality, straightness
  • Technology:3D laser profilometry
  • Inline:100% inspection at line speed

Weld Detection & Inspection

  • Defects:Lack of fusion, porosity, undercut
  • Technology:Eddy current / Laser shearography
  • Application:ERW, SAW, laser welded pipes
  • Reporting:Real-time defect mapping

Emulsion & Fluids Control

  • Parameters:Concentration, temperature, pH, conductivity
  • Technology:Inline refractometers / sensors
  • Benefits:Optimized lubrication, reduced consumption
  • Integration:PLC / DCS for automatic dosing

Integrated Steel Mill Solutions

From melt shop to finished product - complete measurement coverage

1

Slab/Billet

Dimension, temperature, surface

2

Hot Rolling

AGC, width, flatness, temp

3

Pickling

Thickness, width, surface

4

Cold Rolling

High-precision AGC, flatness

5

Annealing

Gauge monitoring

6

Coating

Coating weight, width, flatness

7

Pipe Mill

Weld inspection, shape, OD

8

Finishing

Final QC: thickness, width, flatness, roughness

Why Steel Producers Choose LGE

Tighter Tolerances

Reduce scrap by up to 40% with precision control

Faster Response

less than 1 ms control loop for immediate correction

Higher Yield

Increase first-pass yield by 15-25%

Closed-Loop Integration

Direct connection to mill actuators

AI-Assisted Optimization

Adaptive learning for material grades

24/7 Global Support

Remote diagnostics and on-site service

Proven Performance in Steel Mills

Real results from global installations

±0.1%
Thickness Tolerance
40%
Less Scrap
99.5%
Up-time
150+
Installed Systems
30+
Years Experience

Seamless Integration with Your Existing Mill Infrastructure

All LGE systems support PROFINET, EtherCAT, Ethernet/IP, Modbus TCP, and analog interfaces for direct connection to existing PLCs, SCADA, and MES systems.