Featured Industrial Coil Processing & Leveling Lines
Standard and customized processing solutions built in our 40,000 m² Wuxi facility, exported directly to metal service centers across Europe, North America, Southeast Asia, and 30+ countries worldwide.
High-Precision Coil Slitting Line
Ultra-accurate rotary arbor slitting with hydraulic quick-exchange knives and dual scrap winders for light-to-heavy gauge steel coils.
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CE Certified Cut to Length Line
Engineered strictly to European CE safety guidelines featuring 6-high precision levelers, servo feed rolls, and electromagnetic sheet stacking.
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Continuous Flying Shear Line
Synchronous linear-motion flying shear design for non-stop, high-speed cutting of flat sheets without strip marking or surface indentations.
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High-Strength Heavy Plate Leveler
Multi-roll hydraulic bending unit capable of correcting residual stresses and heavy coil set in yield strengths exceeding 960 MPa.
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Professional Metal Straightener
Advanced anti-camber roll geometry with micrometer-level mechanical gap positioning, delivering laser-flat sheet quality for stamping dies.
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HR Plate Moving Shear Line
High-rigidity servo moving shear configured for thick hot-rolled carbon plates up to 25mm thickness with integrated automated palletizing.
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Stainless Steel Precision CTL Line
Specialized polyurethane rolls and air-cushion float stacking engineered specifically to preserve 2B/BA mirror surface finishes on stainless strip.
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Combined Slitting & CTL Line
Integrated multi-mode coil processing center capable of slitting, edge trimming, precision leveling, and length-shearing in a compact factory footprint.
View Product DetailsEngineering Physics of Pure Tension Leveling vs. Roller Leveling
Understanding plastic-elastic elongation mechanics, elimination of residual stresses, and why modern downstream stamping lines demand continuous tension leveling technology.
Combined Bending & Tensile Strain
Conventional roller levelers rely solely on alternating elastic-plastic bending, leaving a neutral central axis unaffected. A Tension Leveler overlays high longitudinal tension generated by bridle roll sets (up to 400 kN), shifting the neutral axis completely outside the strip thickness.
- 0.5% to 2.5% controlled plastic elongation
- Total eradication of cross-bow & edge waves
- Homogeneous through-thickness stress distribution
Suppression of Yield Point Elongation
Cold-rolled low carbon steels and interstitial-free (IF) automotive alloys exhibit sharp discontinuous yield points that manifest as unsightly Lüders lines (stretcher strains) during sheet forming. The tension leveler permanently suppresses yield phenomena without work hardening the core.
- Zero Lüders line occurrence on exposed car panels
- Stable n-value and r-value deep drawability
- Optimized surface roughness preservation
Sub-I-Unit Strip Flatness Attainment
One I-Unit corresponds to a relative elongation difference of 10⁻⁵. Where traditional multi-roll levelers deliver 5 to 10 I-Units, Wuxi Jianfa's automated tension levelers achieve consistent flatness below 1-2 I-Units, satisfying the stringent requirements of laser cutting tables and silicon electrical steel transformers.
- Guaranteed residual stress variation < 5 MPa
- Laser triangulation real-time shape feedback
- Adaptive hydraulic intermesh tilt control
CE Certification & International Standards Governance
Wuxi Jianfa builds every tension leveler and coil processing line in strict adherence to EU directives, providing verified Notified Body documentation, third-party declarations, and SIL-3 safety systems.
Machinery Directive 2006/42/EC
Comprehensive hazard analysis conforming to EN ISO 12100 risk mitigation. All drive shafts, pinch rollers, bridle drums, and moving cassettes are completely enclosed with interlocked safety guarding.
Electrical Safety EN 60204-1
Fail-safe control architecture with dual-channel emergency stop circuits, emergency reverse kick-offs, high-voltage galvanic isolation, and IP55/NEMA 4X steel cabinet enclosure integration.
EMC Directive 2014/30/EU
Total electromagnetic compatibility preventing harmonic interference between high-frequency AC variable frequency drive (VFD) converters and sensitive laser flatness measurement sensors.
Certified Technical Construction File
Transparent project documentation including fully stamped calculation dossiers for bridle roll fatigue life, hydraulic burst pressure validation, and CE certificates verifiable directly via EU portals.
Why Global Procurement Heads Source from Wuxi Jianfa
Capitalizing on the world's most dense precision manufacturing corridor in the Yangtze River Delta to deliver European-grade equipment with superior cost economics and reduced lead times.
100% In-House Mechanical & Electrical Integration
Unlike trading houses or assembly brokers, Wuxi Jianfa operates heavy CNC boring mills, thermal stress-relieving annealing furnaces, and high-precision CNC roll grinders under its own 40,000 m² factory footprint. Leveler roll surface hardness reaches HRC 60-64 with roughness Ra < 0.05 μm.
Raw Steel & Tier-1 Component Sourcing Density
Located at the epicenter of China's metallurgical hub, we procure forged alloy rolls directly from certified mills (BaoSteel, CITIC Special Steel) and pair them with tier-1 international automation (Siemens S7-1500 PLC, Rexroth/Parker hydraulics, and NSK/SKF ultra-precision bearings).
Logistical Proximity to Shanghai Port
Our facility in Meicun, Xinwu District, Wuxi connects via uninterrupted heavy-haul expressway directly to Shanghai Waigaoqiao and Yangshan Deep-Water Ports (under 130 km). Modularized frame design enables swift flat-rack or break-bulk vessel stowage with zero transport bottlenecks.
Dedicated continuous metallurgical machinery manufacturing since the early 1980s.
Equipped with 100-ton overhead cranes and high-precision horizontal boring centers.
Financial stability guaranteeing completion bond security for long-cycle industrial contracts.
Operating lines deployed throughout Europe, the Americas, Middle East, and Asia-Pacific.
Technological Frontiers in Next-Gen Tension Leveling
Explore how digital twin simulations, rapid cartridge roll cassette changeouts, and smart energy recovery circuits are revolutionizing strip processing efficiency.
Hydraulic Quick-Change Roll Cassettes
To accommodate diverse alloy thicknesses on a single continuous line, modern lines utilize automated hydraulic shifting cassettes. Operators can switch between small roll diameters (e.g. ø25mm for thin aluminum foil) and large diameters (ø55mm for stainless strip) in under 8 minutes without crane intervention.
AI Vision Flatness Closed-Loop Control
High-speed optical laser line scanners generate 3D point-cloud surface topography at 300 m/min. The proprietary AI algorithm measures wave height and frequency across strip divisions, instantly commanding hydraulic servo backup roll flights to eliminate center buckles or edge waves autonomously.
Common DC-Bus Energy Regeneration
Bridle roll groups consume enormous torque during tensioning: the exit bridle drives the strip while the entry bridle acts in regenerative braking mode. Jianfa implements shared DC-bus multi-drive architecture, recycling up to 88% of braking energy back to motoring drives, reducing power draw drastically.
| Engineering Parameter | Light Gauge Aluminum / Tinplate | Cold-Rolled Carbon / GI Steel | High-Yield Stainless / AHSS |
|---|---|---|---|
| Strip Thickness Range | 0.10 mm – 0.60 mm | 0.25 mm – 2.50 mm | 0.50 mm – 4.00 mm |
| Strip Width Maximum | Up to 1,650 mm | Up to 2,000 mm | Up to 2,200 mm |
| Maximum Line Speed | 350 – 500 m/min | 200 – 300 m/min | 80 – 150 m/min |
| Leveling Roll Diameter | ø18 mm – ø28 mm (Carbide/Tool Steel) | ø30 mm – ø45 mm (Cr12MoV/D2) | ø50 mm – ø70 mm (Forged Alloy Steel) |
| Bridle Pull Force Capacity | 30 kN – 80 kN | 120 kN – 250 kN | 250 kN – 450 kN |
| Target Flatness Guarantee | < 1.0 I-Unit | < 1.5 I-Units | < 2.0 I-Units |
Localized Industrial Application Scenarios
Customized mechanical, electrical, and surface protection adaptations tuned for demanding continuous processing line environments worldwide.
Automotive Exposed Skin Panels (Class A)
Automotive hood, roof, and door outer stampings mandate zero coil break, complete absence of crossbow, and pristine surface integrity. Jianfa lines integrate vacuum dedusting blowers, oil-spray lubrication filmers, and chrome-plated work rolls to eliminate debris imprinting on aluminum 6000-series and bake-hardening galvanized steel.
Continuous Galvanizing & Color Coating Lines
Positioned downstream of the zinc pot cooling tower or paint curing oven, the tension leveler ensures uniform strip tracking through high-temperature zones. Tension leveling prevents zinc spatter unevenness and eliminates paint edge bead accumulation, increasing line coating speeds by up to 25%.
Silicon Electrical Steel & Transformer Cores
Non-oriented (CRNGO) and grain-oriented (CRGO) electrical steels are highly sensitive to compressive residual stresses, which drastically degrade magnetic core loss (W/kg). Our tension levelers feature micro-elongation control (0.01% resolution) to achieve perfect flatness without impairing crystalline grain orientations.
Full Lifecycle Procurement & Overseas Installation Support
Structured, transparent commissioning methodology engineered to mitigate operational risk for overseas engineering procurement directors.
1. Specification Audit
Rigorous simulation of strip tensile yield profiles, maximum line tension requirements, and plant grid electrical load calculations.
2. Detailed 3D Modeling
Customized line layouts with foundation load maps, pass-line coordinate alignment, and interference collision checking.
3. Pre-Shipment FAT
Factory Acceptance Testing in our Wuxi plant under full no-load test runs and dry-cycling witnessed by client or SGS inspectors.
4. Site Commissioning
Dispatch of English-speaking senior mechanical and PLC automation commissioning engineers directly to your overseas facility.
5. Remote VPN Diagnostics
Secure industrial VPN telemetry for real-time firmware updates, drive parameter tuning, and rapid spare-part air shipment turnaround.
Frequently Asked Technical & Commercial Questions
Authoritative insights from Wuxi Jianfa's metallurgical engineering department addressing core procurement and performance inquiries.
Explore Related Heavy-Duty Coil Processing Machinery
Direct factory sourcing with documented engineering integrity, verified quality assurance, and complete global spare parts backing.
Heavy Duty Strip Slitting Machine
Built for rigorous tube mill strip feeding and roll-forming supply lines, featuring heavy eccentric knife clearance adjustments.
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Automated Sheet Cut-to-Length Center
High-speed mechanical and hydraulic guillotine shearing integrated with motorized sheet reject gates and automatic carton packaging.
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Rotary Drum Flying Shear Production Line
Cutting speeds up to 120 m/min with length precision of ±0.2 mm, engineered for continuous sheet processing plants requiring zero line stoppage.
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High-Yield Structural Steel Leveler
Heavy structural roll frame with 4-high and 6-high roller configurations eliminating crossbow and coil memory in hot-rolled structural coils.
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Precision CNC Sheet Straightening Machine
Digital screw-down displacement sensing with micro-positioning precision down to 0.01 mm, optimizing flat sheet delivery to laser cutters.
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Hot Rolled Heavy Moving Shear Line
High-rigidity design accommodating coils up to 35 tons, incorporating automatic edge scrap cutting and heavy roller conveyor tables.
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Stainless & Aluminum Coil CTL Line
Designed for sensitive decorative sheet surfaces with interleaf paper decoiler and recoiler, static-eliminator bars, and soft landing arms.
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Multi-Cut Slitting & Blanking Line
Versatile coil center that permits slitting narrow coils for stamping while cutting master sheets to specified lengths simultaneously.
View Product DetailsConsult Directly with Wuxi Jianfa's Chief Engineers
Looking to achieve verified sub-I-Unit strip flatness, upgrade an existing continuous processing line, or discuss a CE certified turnkey tension leveler installation? Our direct manufacturing team provides tailored engineering layouts and commercial proposals within 24 hours.