Leveling & Pay-Off
High Strength Leveling Machine
Multi-roll dynamic leveling units paired with hydraulic wedge uncoilers for residual stress relief across high-yield coils.
Industrial Product Portfolio
Heavy-Duty Uncoiling & Coil Processing Machinery
Factory-direct uncoilers, leveling systems, and integrated metal coil processing lines manufactured to tight tolerances for heavy-gauge and high-tensile metallurgical processing.
Straightening Unit
Professional Straightening Machine
Engineered for high-rigidity uncoiling and precision roll straightening prior to blanking or high-speed stamp processing.
Flying Shear
Hot Rolled Plate Moving Shear Line
Synchronized continuous strip feed powered by heavy-duty uncoilers and moving shears for high-output plate manufacturing.
Cut To Length Line
Stainless Steel Coil Uncoiling-Leveling-Shearing Line
Surface-critical uncoiler mandrels with rubber jackets preventing cosmetic marks on austenitic and ferritic stainless coils.
Slitting + CTL Combined
Hot-Rolled Coil Uncoiling-Slitting-Leveling Line
Dual-action production configuration featuring high-capacity uncoilers feeding synchronized rotary slitting and shearing heads.
Rotary Slitting Line
Hot Rolled Sheet Uncoiling, Slitting & Recoiling Line
High-torque cantilevered uncoiling with integrated snubber rolls and hydraulic coil cars for seamless 35-ton coil loading.
Heavy Strip Slitting
HR Uncoiling-Slitting-Recoiling Line
Designed for heavy structural tube mill feeds, featuring closed-loop back-tension brakes to maintain precision strip tracking.
Cut To Length Line
Hot Rolled Sheet Uncoiling-Leveling-Shearing Line
Automated uncoiler mandrels with wedge-type hydraulic expansion feeding four-high and six-high precision leveling cassettes.
Macro Industry Solutions
The Strategic Role of Un Coiler Engineering in Modern Metallurgy
In advanced coil converting ecosystems, uncoilers are no longer passive mechanical spindles. They are dynamic back-tension engines dictating line efficiency, edge geometry preservation, and operator safety.
Dynamic Back-Tension Optimization
Uncontrolled coil payout causes strip sag, slippage, and surface abrasion. Our pneumatic multi-disc and regenerative AC vector uncoiler brakes dynamically calculate coil outer diameter via laser sensors, auto-adjusting braking torque to maintain uniform web tension across 100% of the unwind cycle.
AHSS & UHSS High-Elasticity Management
Advanced High-Strength Steels (up to 1200+ MPa yield strength) release severe clock-spring energy when outer bands are cut. Our uncoiler systems feature heavy-duty hydraulic snubber arms with motorized hold-down rolls and peeler knives, ensuring controlled containment and safe strip head threading.
Automatic Edge Centerline Tracking
Eliminate strip walk and lateral camber errors. Integrating electro-hydraulic servo-controlled sub-bases with ultrasonic web guide sensors, our uncoiler platforms shift laterally up to ±100 mm in real-time, delivering centered strip entry into slitter tooling or leveling cassettes.
Non-Stop Coil Exchange Workflows
To eliminate threading bottlenecks, dual-mandrel turret uncoilers and floor-level hydraulic coil loading cars reduce coil changeover time from 15 minutes to under 120 seconds, drastically increasing annual plant overall equipment effectiveness (OEE).
Mechanical Engineering Taxonomy
Engineering Taxonomy: Single Mandrel vs. Double Cone Decoilers
Selecting the ideal uncoiler architecture depends on coil weight thresholds, strip width, inner diameter variance, and downstream velocity requirements. Review our engineering comparison below.
| Architecture Type | Max Coil Load | Expansion Mechanism | Primary Industrial Applications | Core Mechanical Advantage |
|---|---|---|---|---|
| Hydraulic Cantilever Uncoiler | Up to 35 Metric Tons | Hydraulic 4-segment wedge / link slide | Precision Slitting Lines, Cut-to-Length Lines, Tube Mills | Open side access allows rapid coil car loading; zero edge contact. |
| Double Cone Heavy Uncoiler | Up to 45 Metric Tons | Opposing dual-cone motorized traverse | Heavy plate leveling, structural beam mills, hot strip mills | Exceptional torsional stability for heavy hot-rolled steel over 16mm thick. |
| Dual-Mandrel Turret Uncoiler | 2x 20 Metric Tons | 180° motorized index rotary carousel | High-speed automotive blanking, continuous roll-forming lines | Stage secondary master coil while primary coil is unwinding; near-zero idle time. |
| Double-Stub Mandrel Decoilers | Up to 40 Metric Tons | Hydraulically actuated expanding stub arbors | Surface-critical stainless, coated aluminum coils | Eliminates internal coil bore clock-spring scuffing and bore deformation. |
Enterprise Authority & Heritage
Wuxi Jianfa Machine-Building: Four Decades of Excellence
Established in the early 1980s, Wuxi Jianfa Machine-Building Co., Ltd. is recognized as a national key developing enterprise in China's metallurgical machinery sector. Operating from a modern 40,000 m² production complex with 45 million RMB registered capital, we engineer heavy machinery that powers mills in over 30 countries.
40+ Yrs
Continuous Manufacturing
40,000m²
Heavy Fabrication Base
45M RMB
Registered Capital Base
30+ Countries
Global Installations
Original Factory Equipment References & Process Lines
Wuxi Jianfa integrates uncoiler systems as the foundational front-end module for our entire machinery series. Discover our core primary installations:
Localized Application Engineering
Sector-Specific Deployments for Industrial Uncoilers
Every material grade and downstream processing speed dictates custom uncoiler features. Here is how Jianfa solves specialized production line demands.
Automotive AHSS Stamping Feeds
Dual-mandrel unwinding with automatic ultrasonic loop regulation designed to feed variable-speed eccentric and servo presses stamping structural automotive chassis members without strip whipping or tension drop.
High-Frequency ERW Pipe Mills
Continuous uncoiling connected to horizontal accumulator strip cages. Includes automated coil end crop shears and hydraulic peeler tables to support non-stop high-frequency longitudinal tube welding lines.
Surface-Critical Stainless & Aluminum
Equipped with non-marking polyurethane segments, paper interleaving pay-off / recoiler reels, and precision edge sensors to protect bright annealed (BA) and polished No.4 stainless finishes.
Compliance, QA & Certified Engineering
Strict Compliance: CE, ISO 9001 & Global Safety Standards
Every decoiling spindle and power unit undergoes non-destructive ultrasonic shaft testing, hydraulic pressure endurance tests, and complete pre-shipment rotational balancing at our Wuxi facility.
Global Regulatory Adherence
Jianfa machines operate according to European Union Machinery Directive 2006/42/EC, EN ISO 12100 risk mitigation, and international industrial electrical codes (IEC 60204-1 / NFPA 79). Our uncoilers include hydraulic pilot-operated check valves that mechanically lock mandrel expansion even during complete plant electrical or hydraulic power loss.
- Integrated dual-circuit safety interlocks and wire-pull emergency stops across all unwind zones.
- Forged 42CrMo alloy steel main shafts, quenched and tempered for extreme fatigue limits.
- Full OEM factory FAT running tests documented and verified prior to export container packaging.
Official Corporate Accreditations
Our factory credentials can be verified directly. Overseas engineering teams are welcomed to our Wuxi campus for on-site witness inspections and trial runs.
Engineering Roadmap (2025–2030)
Next-Generation Decoiling Intelligence & IoT Integration
Smart manufacturing demands continuous telemetry from the unwind reel to the plant MES. Here is how Jianfa is shaping the future of coil feeding.
AI Predictive Bearing Telemetry
Integrated vibration and temperature sensors mounted on the main arbor spherical roller bearings detect micro-spalling or lubricant breakdown prior to line stoppage.
Adaptive Inertia Braking Algorithms
Dynamic calculations of changing mass moments of inertia ($J = \frac{1}{2} m (r_1^2 + r_2^2)$) ensure zero strip slippage during ultra-rapid emergency stop ramps under 1.5 seconds.
Cloud-Linked Fleet Monitoring
Remote diagnostics enabled through industrial VPN gateways allow our engineers to inspect hydraulic proportional valve performance and PLC registers worldwide.
Regenerative Energy Recovery
Converting braking energy into clean AC power through 4-quadrant regenerative drive bus systems, returning up to 22% of total unwind energy back to the plant grid.
Engineering Knowledge Base
Frequently Asked Questions: Un Coiler Engineering
Expert answers to the most common technical questions asked by global plant directors, procurement managers, and mechanical engineers.
What coil processing equipment does Wuxi Jianfa manufacture?
We manufacture complete coil processing lines: high-precision slitting lines (rotary shear lines), cut to length lines, flying shear production lines, hydraulic uncoilers, leveling machines, straightening machines, and continuous galvanizing lines. Equipment can be supplied as a turn-key project or as standalone uncoiling and leveling stations to retrofit existing coil processing operations.
Which materials and yield strengths can your uncoilers process?
Our uncoiler stations process hot-rolled carbon steel, cold-rolled steel, galvanized sheet, silicon electrical steel, stainless steel (grades 304, 316, 430), and aluminum alloy coils. We design specialized cantilevered mandrels capable of processing ultra-high yield strength steels (AHSS/UHSS) up to 1200 MPa, with coil thicknesses ranging from 0.2 mm thin gauge up to 25.0 mm heavy structural plate.
How do you prevent coil clock-springing and edge damage on heavy coils?
Heavy-gauge and high-tensile coils store massive elastic spring energy. Jianfa uncoilers integrate a top-mounted hydraulic snubber arm equipped with an electric motorized hold-down roll. This roll presses against the outer wrap while an automated hydraulic peeler table and snubber wedge slide underneath the strip tongue, guiding it smoothly into the pinch-roll leveling station without manual operator intervention.
What are the typical mandrel expansion ranges available?
Standard hydraulic 4-segment wedge mandrels provide an expansion range of Φ480 mm to Φ520 mm (for standard Φ508 mm coil cores). For wider versatility, we provide bolt-on or hydraulically linked rubber/cast-iron expansion filler pads that extend the diameter up to Φ610 mm, Φ760 mm, or Φ800 mm, accommodating global master coil standards without core distortion.
How do I choose between a slitting line, a cut to length line and a flying shear line?
Choose a slitting line when you need narrow strips recoiled for tube mills, roll forming, or stamping presses. Choose a cut to length line when you need flat, stacked sheets or plates with start-stop shearing. Choose a flying shear line when you need maximum sheet throughput, because the flying shear cuts synchronized with the running strip without stopping material feed. Combined slitting and cut to length lines are also engineered on demand.
What technical specifications must be provided for a quotation?
To prepare a precise proposal, please share: material grade and yield strength (MPa), coil thickness and width range, maximum coil weight (e.g., 15T, 25T, 35T), coil inner and outer diameter (ID/OD), target line speed (m/min), required surface protection protocols (e.g., polyurethane mandrel sleeves, paper uncoiler), and plant utility parameters (voltage, frequency, compressed air).
Do you support overseas installation, commissioning, and operator training?
Yes. Our experienced field installation engineers deploy globally to oversee mechanical foundation alignment, hydraulic piping integration, electrical wiring, PLC commissioning, and full operator training. We maintain a responsive technical desk and guarantee continuous spare parts delivery throughout the machine lifecycle.
Can I visit the factory and inspect equipment prior to shipment?
Yes. We welcome international buyers to our 40,000 m² manufacturing facility in Wuxi, Jiangsu Province. Our location offers fast highway and high-speed rail access from Shanghai Hongqiao International Airport. Buyers can inspect machining quality, witness Factory Acceptance Tests (FAT), and verify alignment before container loading.
Complete Coil Machinery Lineup
Featured Industrial Coil Production Lines
Explore our high-performance coil lines manufactured directly by Wuxi Jianfa. Retaining all original machine specifications, customized to your mill floor layout.
Slitting Line
Precision Rotary Slitting Line System
Engineered for high-speed master coil slitting into narrow mults with burr-free rotary arbor tool clamping.
Flying Shear
High-Quality Flying Shear Line
Non-stop continuous rotary/moving shearing maintaining surface integrity and cutting tolerances under ±0.5 mm.
Cut to Length
CE Certified Cut to Length Line
Full European standard compliance featuring hydraulic uncoiling, automated levelers, and drop-type sheet stackers.
Leveling Unit
High Strength Leveling Machine
Eliminate coil set, cross bow, and edge waves with 4-high or 6-high roller cassettes backed by intermediate rolls.
Stainless Processing
Stainless Steel Coil Processing Line
Complete uncoiling, leveling, shearing, and magnetic/vacuum stacking line designed for delicate surface grades.
Heavy Slitting
HR Sheet Uncoiling & Recoiling Line
High-torque slitting line featuring dual scrap winders, tension pads, and hydraulic recoiler push-off plates.
High Output CTL
Hot Rolled Moving Shear Line
High-inertia servo-driven shear synchronizing with strip feed velocity to optimize tonnage per hour output.
Multi-Function Line
Combined Uncoiling-Slitting-CTL Line
The all-in-one steel processing center: slit edge trimming, intermediate leveling, and length cutting in a single run.
Direct Engineering Consultation
Request an Uncoiler or Processing Line Proposal
Consult directly with a Jianfa chief mechanical engineer. We analyze your coil weight, tensile parameters, and shop dimensions to provide custom layout drawings and detailed technical quotations within 24 business hours.
Factory Contact Details:
Phone: +86-510-88151451 / +86-139-2116-6015
Email: [email protected] / [email protected]
Plant Address: No. 58 Qunxing Road, Meicun, Xinwu District, Wuxi, Jiangsu, China
Port of Loading: Shanghai Port (Direct Expressway Connection)