Shanghai Zhenghao Youbang Heavy Industry: Three-Roll and Four-Roll Plate Bending Machines — Core Equipment for Precision, High-Efficiency Metal Sheet Forming

InPressure Vessel Manufacturing, Wind Turbine Tower Processing, Steel Structure Engineering, Shipbuilding and Chemical Equipmentfields,Three-roll rolling machine, four-roll rolling machineis key equipment for bending metal sheets, rolling them into circles, and forming arcs. Shanghai Zhenghao Youbang Heavy Industry Machinery Co., Ltd. (referred to as "Zhenghao Youbang Heavy Industry") serves asShanghai Professional Plate Rolling Machine Manufacturer, CNC Plate Rolling Machine R&D Enterprise, and Metal Forming Equipment ManufacturerOver 20 years of expertise in sheet metal equipment, with independent R&DW11 Series 3-Roll Plate Rolling Machine, W12 Series 4-Roll Plate Rolling Machine, asHigh-rigidity roller shafts, hydraulic servo control, intelligent CNC system, and full-process precision assuranceFour core technologies, coveringFrom precision roll forming of thin sheets to heavy-duty forming of thick platesFull-scenario support for advancing domestic coil winding equipment towardHigh precision, high efficiency, intelligent, energy-efficientUpgrade

W11 Series Three-Roll Plate Rolling Machine

1. Three-Roll Plate Rolling Machine: Simple structure, cost-effective, and ideal for small to medium batch forming.

Zhenghao YoubangW11 Series Three-Roll Plate Rolling Machine(including symmetrical and universal top-roll types), adoptedDown, Down, UpThree-roll layout: compact structure, easy operation, and low maintenance costs.Ideal for SMEs, budget-friendly projects, and standard roll forming needsthe mainstream choice, widely used inVentilation ducts, small storage tanks, steel structural beams and columns, kitchen sheet metal appliances, and general mechanical parts.Process

1. Core Structure and Working Principle

• Symmetrical Three-Roll (W11): Synchronized dual lower roller drive with vertical downward pressure from the upper roller; forms arcs or cylinders in sheet metal via three-point bending.Simplest structure, most affordable price, suitable forThickness 2–20mm, width ≤3000mmWood panels.

• Universal Top Roll (W11S): The upper roll canVertical lift + Horizontal movement, works in conjunction with the rotation of the lower roller to completeEdge pre-bending of platesreduces edge residue; no additional pre-bending equipment required.Superior precision and efficiency over conventional symmetric designs。

• Roller Material: Adopt42CrMo Premium Alloy Steel, afterForging + Quenching and Tempering + Surface Hardening + Precision Grinding, hardness reachesHRC 5–60Durable and deformation-resistant for long-term useRoll surface: no dents, no cracks。

2. Technical Advantages: Stable, reliable, and cost-effective

• Cost-effectiveSimple structure, easy to get startedLow maintenance costs 30%+The procurement price is lower than that of a four-roll plate rolling machine with the same specifications.Low 30%–50%Suitable for small to medium batch production.

• Rigid Stability: rackQ355B All-welded construction + vibration stress relief, prolonged heavy loadingChassis remains rigid; Roller DiameterIncrease designStrong bending resistance, roll-formedThick plates: flatness and roundness error ≤ ±1mm。

• Wide Compatibility: RollableCarbon steel, stainless steel, aluminum alloy, copper plateMaterial, Thickness2–50mm, Width1500–6000mm, meetsCylindrical, Arc-shaped, and Conical PartsForm requirements.

• CNC Optional: StandardHydraulic Drive + Digital Display Control, optionalPLC CNC System, supportedRoller stroke setting, angle memory, and automatic rebound compensationrepeatability accuracy reaches±0.1mm。

3. Use Cases

• Ventilation ducts; environmental protection equipment casings

• Small storage tanks, water tanks, pressure vessels (low-pressure);

• Steel structural components for buildings, bridge parts, and factory beams and columns;

• Kitchen and bathroom ware, hardware products, and general mechanical sheet metal parts.

W12 Series Four-Roll Plate Rolling Machine

2. Four-Roll Plate Rolling Machine: Precision and efficiency in a single step, designed for high-precision heavy-duty applications

Zhenghao YoubangW12 Series 4-Roll Plate Rolling Machine, adoptTop roll (active) + Bottom roll (passive) + Two side rolls (adjustable) in a quadrilateral layout, with synchronized four-roll control to integrate plate pre-bending, rolling, and finishing.Single feeding completes seamless cylindrical forming without straight edges.Efficiency up 40%+, accuracy ±0.1mm, isPressure vessels, wind turbine towers, shipbuilding, chemical equipmentThe top choice for premium applications.

1. Core Structure and Working Principle

• top roll：Main Drive Rollerhydraulic motor-driven, provides coiling torque, canVertical LiftControl the bend radius.

• lower roller：back-up roll, fixed position, working with the upper roller to clamp the sheet.Anti-slip design for smooth material feeding。

• Side rollers (one on each side)：Tilt and move horizontallyPrecisely adjust the radius of curvatureComplete pre-bending at both ends of the plate directly.Eliminates edge residue without turning or auxiliary equipment.

• All-hydraulic servo drive: AdoptImported Servo Valve + Variable Piston Pump, stress0–31.5MPaAdjustable, roller actionSync accuracy ±0.02mmEven load distribution across the board.No wave deformation, no edge curling。

2. Technical Advantages: Precision, Efficiency, Intelligence, Versatility

• Seamless one-step molding: Pre-bending with side rolls + Four-roll linkageSingle-feed pre-bending and roll formingstraight edges remaining on both ends≤5mm(3-roll approx. 150–200mm), no secondary processing required,Efficiency up 40%+, defect rate down 50%。

• Ultra-high molding precision: RollerFine grinding + Mirror polishing, cooperateFull closed-loop displacement feedback，Repeat positioning accuracy: ±0.01mm; Roundness error: ≤±0.5mm; Bending angle accuracy: ±0.1°, meetsPressure vessels, wind turbine towersHigh precision requirements.

• High load capacity for thick plates: ProcessableThickness 6–100mm, width ≤6000mmCarbon steel / Stainless steel / High-strength steelOne machine replaces the three-roll and pre-bending machine combinationSave on equipment investment and space.

• Smart CNC Upgrade: StandardDELEM / Domestic High-Precision CNC System, supportedImport CAD drawings, automatic programming, one-click parameter storage, and remote operation diagnostics; Built-inAI Curvature Adaptive AlgorithmAutomatically compensates for sheet metal springback. Beginner mode.Up and running in 1 hours。

• Energy-efficient, quiet, and eco-friendly: Servo Hydraulic SystemPower on demandcompared to traditional hydraulic plate rolling machinesSave 35%–45%; Running Noise≤75dBLow vibration, improves workshop environment.

3. Use Cases

• Pressure vessels, boilers, high-pressure tanks (petrochemical / chemical / energy);

• Wind turbine towers, tower flanges, large cylindrical structures (new energy);

• Shipbuilding, ship cylinders, piping, and heads (shipbuilding industry);

• Large steel structures, bridge components, and shield tunneling machine parts (infrastructure);

• Aerospace, medical devices, precision equipment enclosures (high-end manufacturing).

III. Three-Roll vs. Four-Roll Plate Bending Machines: Key Differences and Selection Guide

Table

Selection Recommendation：

• Limited budget, thin sheet (≤20mm), standard roll forming: SelectThree-roll plate rolling machine；

• High precision, no straight edges, thick plates (≥20mm), large volume: SelectFour-Roll Plate Rolling Machine；

• Balance cost and precision: chooseUniversal Three-Roll Plate Rolling Machine (W11S)。

4. Zhenghao ABB Coil Winder: Rugged Specs and Full-Cycle Service for Quality Assurance

1. Core Configuration (Universal for 3-Roll / 4-Roll)

• Roller: 42CrMo alloy steel, forged + tempered + quenched + precision ground, HRC55–60;

• Rack:Q355B features all-welded construction, vibration stress relief, and guaranteed dimensional stability for 10 years.

• Hydraulic SystemDomestic or imported servo valves + variable piston pumps for stable pressure, energy efficiency, and low noise.

• CNC System: Standard digital display / PLC; optional DELEM CNC system with graphical programming and one-touch operation;

• Security Protection: Optical protection, emergency stop, overload protection, and safety door lock — four layers of defense.

2. Full lifecycle services

• Pre-sales: FreeProcess analysis, equipment selection, 3D roll forming simulation, and customized solutions；

• Pre-sale: SupportedNon-standard customization (tonnage / width / roller length); automation integration (robotic arm linkage, production line interface)；

• After-Sales：24-hour response, 48-hour on-site service, lifetime technical support, operation training, and regular inspections, solve customerDifficult selection, operation, and maintenancePain points.

5. Industry Trends and Future Outlook

WithSmart manufacturing, green manufacturing, and localization of high-end equipmentAccelerateCNC Plate Bending Machine, Precision Plate Rolling Machine, Four-Roll Plate Rolling MachineDemand continues to grow, leading toHigh-precision, intelligent, energy-efficient, and flexibleThe upward trend is clear. Zhenghao Youbang Heavy Industry will continue to focus on3-Roll Plate Rolling Machine, 4-Roll Plate Rolling Machine, CNC Plate Rolling MachineCore赛道， increase R&D investment, focus on breakthroughsUltra-thick Plate Rolling, Intelligent Adaptive Forming, Digital Twin, Modular Customization, Green Energy Efficiencykey technologies, enhance the product portfolio; deepenDomestic expertise, global expansion, enhance international market share; persistQuality First, Service Above All, empowering China's coil processing equipment industry to advancePremium, Smart, GlobalMove forward.