Plate Precision
High Strength Leveling Machine
Multi-roll 4-Hi/6-Hi roll cassettes designed to eliminate coil set, crossbow, and residual edge waves in ultra-high yield steel.
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Direct Factory Portfolio
Heavy-Gauge Coil Slitter & Leveling Systems
Engineered for extreme yield strengths, automated knife tooling changes, zero-camber tension recoiling, and maximum uptime across international metal service centers.
Anti-Stress
Professional Straightening Machine
High-rigidity backed-up work rolls delivering symmetrical stress relief prior to downstream laser fabrication and press forming.
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Continuous Shear
Hot Rolled Plate Moving Shear Line
Synchronized continuous-motion hydraulic flying cross-shear maximizing throughput without stopping strip transport.
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Surface Sensitive
Stainless Steel Cut-to-Length Line
Non-marking polyurethane pinch rolls, paper-interleaving decoilers, and magnetic air-drop stackers for mirror-finish SS sheets.
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Hybrid Line
Combined Slitting & CTL Line
Dual-purpose architecture executing precision longitudinal slitting and transverse shearing in a unified plant layout.
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High Capacity
HR Sheet Slitting & Recoiling Line
Heavy rotary head engineered for structural hot-rolled strip; features double eccentric arbor adjustment and scrap choppers.
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Mill Grade
Heavy HR Coil Slitting Line
Designed for tube-mill feedstocks with hydraulic push-off, expanding recoiler mandrels, and turnstile coil unloaders.
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Automated Stack
Continuous HR Shearing & Stacker
Automated CNC length gauge control tied with electromagnetic and pneumatic cassette drops for continuous bundle handling.
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Technical Whitepaper
Engineering Principles of Precision Slitter Rewinders
How modern metallurgical engineering solves arbor deflection, slit edge deformation, camber, and coil collapse during high-speed continuous recoiling.
Arbor Kinematics & Slit Geometry
Slitting accuracy is defined at the slitter head. High-yield coils exert massive lateral forces against circular knives. If arbor deflection exceeds 0.01 mm, strip edge burr and width deviations escalate exponentially.
- Forged 42CrMo shafts with sub-micron ground journals
- Double eccentric mechanical adjusters for precise knife overlap
- Hydraulic outward support locks eliminating transverse vibration
Dynamic Tension Control Units
When slitting master coils into differential slit widths, loose coils happen because the center of the coil is thicker than the edges (crown effect). Controlled tension bridging is crucial to avoid uneven recoiling.
- Dual-tension pad system with adjustable hydraulic pressure profiles
- Belt bridle tensioners for flawless, scuff-free surface finishes
- Deep loop pits enabling differential strip velocity accumulation
Expanding Recoiler Mechanics
The recoiler mandrel must support coil weights up to 35 metric tons while generating continuous radial pull without slipping, ensuring the inner diameter is preserved cleanly upon unloading.
- Four-segment wedge expansion with continuous outer diameter arcs
- Integrated hydraulic push-off plates and overarm separator shafts
- Stepped coil cars with automatic laser height centering
| Slitting Line Specification | Light Gauge / Surface Sensitive | Medium Gauge Standard | Heavy Plate / Mill Gauge |
|---|---|---|---|
| Strip Thickness Range | 0.2 mm – 2.0 mm | 1.0 mm – 6.0 mm | 6.0 mm – 16.0 mm / 20.0 mm |
| Coil Width Capacity | 600 mm – 1,600 mm | 1,000 mm – 2,000 mm | 1,200 mm – 2,200 mm |
| Max Line Speed | Up to 250 m/min | Up to 150 m/min | Up to 60 m/min |
| Slitter Head Configuration | Quick-change twin arbors (CNC robot assist) | Double eccentric rotary turret heads | Fixed ultra-rigid forged housings (high torque) |
| Burr Tolerance Benchmark | < 3% of material gauge | < 5% of material gauge | < 7% of material gauge |
| Recommended End Markets | EV Battery tabs, appliance, electronic lamination | Automotive chassis, stamping, roll-forming | ERW / API pipe mills, heavy structural shapes |
Strategic Procurement
China Factory Supply Chain Advantages & Global Compliance
How Wuxi Jianfa integrates Yangtze River Delta metallurgical manufacturing efficiency with rigorous Western electrical, mechanical, and safety standards.
Yangtze Delta Cluster Synergy
Wuxi is the geographic heart of China's heavy precision machinery sector. We maintain direct, raw material supply chains for heat treatment, heavy casting, and multi-axis CNC gantry machining within a 50 km radius.
- Direct expressway transport to Port of Shanghai
- Complete in-house mechanical fabrication and line testing
- Short lead times on replacement tooling and wear plates
CE, UL & Regional Compliance
Global procurement teams must navigate local safety directives. Every Jianfa machine can be wired and programmed according to target nation codes before ocean container shipment.
- European CE Machinery Directive 2006/42/EC
- North American NFPA 79 & UL-certified electrical cabinets
- Multi-language Siemens/Allen-Bradley HMI programming
Full Lifecycle Engineering Support
Buying direct from a manufacturer removes agent markups while securing technical accountability. Our field installation teams deploy globally to oversee mechanical alignment, leveling, and testing.
- Bilingual field engineers sent directly to your plant
- Secure remote telemetry diagnostics via industrial VPN
- Standardized wear components sourced through global brands
Industry Trends & Use Cases
Technological Frontiers & Specialized Industrial Applications
From Advanced High Strength Steels (AHSS) to high-speed electrical silicon laminations, slitter rewinders are evolving to match higher tensile loads and zero-defect requirements.
Automotive AHSS & Dual Phase
Modern vehicle light-weighting requires processing coils exceeding 980–1200 MPa tensile strength. Jianfa slitting lines feature reinforced cutter housings, deep hardening arbors, and high-pressure hydraulic hold-downs.
Grain-Oriented Silicon Steel
Transformer core production demands virtually zero burr (<0.005 mm) to avoid eddy current losses. Our micro-slitting lines integrate carbide tooling with zero-backlash hydrostatic bearings.
Tube & Pipe Mill Strip Supply
Continuous pipe production requires exact slit width tolerances and tight recoiling without telescoping, allowing rapid, uninterrupted automated welding downstream.
Architectural Stainless Steel
High-end building facades require pristine surfaces. Our lines incorporate complete protective film laminators, felt/polyurethane tension rolls, and scratch-free automatic drop stackers.
Compliance & Quality Audit
Documented Qualifications & Factory Certifications
Recognized as a National Key Developing Enterprise in China's metallurgical machinery sector. We welcome on-site factory acceptance testing (FAT) prior to shipping.
Complete Heavy Coil Processing Machinery
Certified Turnkey Processing Solutions
Select an engineered configuration to inspect technical specifications, layout blueprints, and operational capabilities.
Flying Shear
Flying Shear Production Line
High-speed synchronized reciprocating shearing system cutting up to 120 cuts per minute with zero strip stop marks.
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Precision Slitting
Industrial Slitting Line System
High-torque slitting line equipped with dual uncoiling saddles, hydraulic peeling heads, and double rotary slitter changers.
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CE Certified
CE Certified Cut-to-Length Line
Fully CE-compliant blanking system featuring precision optical encoders, hydraulic guillotine shears, and automatic palletizers.
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Leveler Cassette
Hydraulic Precision Plate Leveler
Individual hydraulic backup roll adjustments delivering corrective bending to eliminate center buckle in sheet metal.
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High Capacity
Heavy Strip Straightening Unit
Reinforced intermediate roll geometry built to withstand heavy coil memory in high-strength carbon steel feeds.
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High Output
Synchronized Moving Shear Unit
Servo rack-and-pinion drive synchronizes blade velocity to strip flow with ±0.5 mm cutting tolerance.
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Tension Rebuild
Automated Strip Recoiling Station
Seamless hydraulic expanding mandrels paired with quick-locking separator plates for tidy multi-strip recoils.
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Automated Pallet
Automated Heavy Plate Stacker
High-speed side-shifting roller tables designed for scratch-free automatic collection of plates up to 12 meters in length.
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Procurement Knowledge Base
Frequently Asked Questions: Slitter Rewinder Sourcing
Clear answers to help project engineers, plant managers, and procurement teams specify slitting lines.
What coil processing equipment does Wuxi Jianfa manufacture?
We manufacture complete, turnkey coil processing lines: high-precision slitting lines (rotary shear lines), cut to length lines, flying shear lines, multi-roll plate leveling machines, strip straightening machines, and continuous hot-dip galvanizing production lines. Equipment can be supplied as complete engineered systems or individual retrofits to expand your current machinery.
Which material grades and tensile ranges can your lines process?
Our lines handle hot-rolled, cold-rolled, galvanized, prepainted (PPGI), stainless steel (grades 200, 300, 400), silicon electrical steel, and aluminum alloys. We configure custom motor powers, gear reductions, and knife clearances for high-strength steel grades such as Q345B, Q550, and DP980/DP1180 with yield strengths over 1000 MPa.
How do I choose between a slitting line, a CTL line, and a flying shear?
Choose a slitting line if you produce narrow coils to feed roll-forming equipment, tube & pipe mills, or progressive stamping dies. Choose a cut to length (CTL) line if your customers need flat sheets or plates stacked on pallets. Choose a flying shear line when sheet throughput volume is the critical operational factor, as its cutter synchronizes with continuous strip feed without pausing material flow.