Corrugated Roof Panel Roll Forming Machines

Corrugated roof panels made of sheet metal are a popular roofing solution for industrial, commercial and agricultural buildings. Corrugated sheet metal is lightweight, durable, easy to install and provides excellent drainage. These corrugated metal roof panels are manufactured on specialized roll forming equipment.

This comprehensive guide will provide a deep understanding of corrugated roof panel roll forming machines. We will cover:

  • Overview of the corrugated roof panel roll forming process
  • Types of corrugated roof panel profiles and standards
  • Key components and working principles
  • Specifications and parameters to consider
  • Major manufacturers and suppliers
  • Estimated equipment cost and pricing
  • Factors influencing corrugated sheet roll forming machine selection
  • Installation, operation and maintenance considerations
  • Pros and cons of corrugated metal roof panel roll forming lines
  • FAQs

Let’s get started!

Overview of Corrugated Roof Panel Roll Forming

Roll forming is a continuous bending operation in which sheet or coil material is passed through consecutive sets of rollers to shape the material into a desired cross-section profile.

Corrugated metal roof panels with sinusoidal Wave shapes are commonly formed by roll forming machines. The corrugated profile provides excellent stiffness and load bearing capacity compared to flat sheets.

A typical corrugated roof panel roll forming line contains:

  • Uncoiler and guiding equipment
  • Shearing or slitting station
  • Entry guides
  • Forming rolls
  • Corrugation forming stations
  • Cutoff press
  • Exit guides
  • Stacker

The sheet or coil material gets gradually bent into the corrugated shape by passing through the different stations sequentially. The profiles are finally cut to length before stacking.

This continuous process enables mass production of corrugated roofing sheets with a high output rate. The roll formed corrugated sheets provide consistent quality and dimensional accuracy.

Next, we will look at the commonly used corrugated profile types and standards.

corrugated roof panel roll forming machine
Corrugated Roof Panel Roll Forming Machines 4

Corrugated Roof Panel Profiles and Standards

There are some standard corrugated profiles that are most commonly formed by these machines. The key corrugated roof sheet profiles are:

Profile TypeDescription
StandardMost common symmetrical single wave profile with ~3″ wave height
5V CrimpSingle wave with more depth, ~5″ wave height
Box RibDouble wave symmetrical profile
WidespanShallow, wide single wave for longer spanning sheets
3/4″ CorrugatedSmaller wave for fine corrugation

Some of the major governing standards for corrugated metal panels are:

ASTM A792Covers steel sheets with corrugated profiles
ASTM A463For aluminum corrugated sheets
AS/NZS 2728Australian / New Zealand standard
IS 277Indian standards for corrugated sheets
BS EN 494British standard specifications

Manufacturers design the roll forming machine according to the profile shape and dimensions specified in these standards. The forming rolls are machined precisely to form the required corrugation profile havig standard wave geometry.

Now, let’s understand the key components of a corrugated roof panel roll forming machine.

Key Components of Corrugated Roof Panel Roll Forming Machines

Corrugated sheet roll forming lines contain a sequence of functional elements assembled in a logical order. The major components are:

DecoilerHolds sheet coil, allows unwinding
Feeder rollsFeeds metal sheet into the line
Positioning rollsAligns sheets before forming
SlitterTrims sheet edges or slits coil
Guiding rollsGuides sheet through each station
Forming rollsBend sheet in stages into corrugation
Corrugating rollsForms the wave profile
Hydraulic stationApplies pressure for shaping
Cutoff shearCuts corrugated sheets to length
StackerCollects cut sheets
PLC ControlControls automation and parameters

The roll forming machine gradually forms the sheet by bending it in incremental steps using a series of rolling stations. The rotating forming rolls continuously apply pressure to deform the metal until the corrugated shape is achieved.

The corrugating station uses special rolls for creating the wavy profile. It may consist of a male-female roll arrangement.

Hydraulic pressure can be applied by presses at the corrugating station to get the required deformation. Guide rolls accurately position the sheet as it proceeds through the roller sets.

The line is operated and monitored via a PLC-based control system. It allows adjusting forming parameters and machine speed for the desired output.

Next, we will go over the key specifications and parameters for these machines.

Key Specifications and Parameters of Corrugated Roof Panel Roll Forming Lines

The corrugated roll former is customized to produce the desired sheet metal profile to required dimensions and tolerances. Here are the key specifications considered:

ParameterTypical Values
Forming Speed10 – 25 m/minute
Sheet Thickness0.3 – 2 mm
Sheet Width800 – 2100 mm
Wave Height50 – 150 mm
Wave Pitch175 – 300 mm
Wave ShapeSinusoidal, curved, triangular
Roller Diameter100 – 250 mm
Roller MaterialSteel, CFE
Number of Stations8 – 16
Cut Length1000 – 10000 mm
Production Rate150 – 1200 sheets/hour
  • Speed: High forming speeds of 15 – 25 m/min are used to maximize output.
  • Thickness: Rolls can form thin sheets up to 2 mm thickness. Thicker gauges possible through customization.
  • Width: Standard sheet widths from 800 to 2100 mm are used. Wider coils require slitting.
  • Wave size: Wave height and pitch determine the profile geometry. 50-150 mm height and around 250 mm pitch are typical.
  • Roller size: Roll diameters between 100-250 mm are commonly used. Bigger rolls allow longer service life.
  • Stations: More stations distribute bending gradually for better quality. 8 to 16 stations are generally used.
  • Cut length – Sheets up to 10 meters long can be produced by adjusting the cutoff press.
  • Output rates – Production capacity ranges from 150 to 1200 sheets per hour based on the profile.

Next, we will look at the major corrugated roll forming equipment manufacturers.

corrugated roof panel roll forming machine
Corrugated Roof Panel Roll Forming Machines 5

Major Manufacturers of Corrugated Roof Panel Roll Forming Equipment

There are a number of leading corrugated sheet roll former manufacturers across the world. Some of the major vendors are:

Machine MakerChina
Epic GroupIndia
EntecSouth Korea
  • Machine maker, ZUANI, Epic offer economical Chinese machines.
  • European companies like Gasparini, Dah Chong, Entec provide premium European and Korean machinery.
  • Metform and Rollformer also export good quality equipment.
  • German company Goebel offers high precision roll forming lines.

It is recommended to choose an established manufacturer having relevant experience, proven machine quality and good after-sales support.

Next, let’s look at the estimated equipment cost.

Corrugated Roof Panel Roll Forming Machine Costs

The price range of corrugated sheet making lines is influenced by:

  • Type of profile
  • Production speed
  • Sheet width
  • Level of automation
  • Optional accessories
  • Buying location

Here is an overview of price range:

Machine RatingPrice Range
Small$40,000 – $80,000
Medium$80,000 – $150,000
Large$150,000 – $250,000
Extra Large$250,000+
  • Small machines for waves up to 75 mm height and 1 m width cost $40,000 to $80,000.
  • Medium range machines for standard 1.5 m widths and common profiles cost $80,000 to $150,000.
  • Large high speed lines for sheets above 2 m wide and complex profiles cost $150,000 to $250,000.
  • Extra large multi-profile industrial lines with high automation can cost over $250,000.
  • Chinese machines are around 30% cheaper than European equipment for similar specifications.
  • Second hand refurbished machines are available at 50% lower cost.
  • Additional 10-15% cost for shipping, installation and commissioning.
  • After-sales service contracts, spare parts are charged separately.

We will next look at the factors to consider when selecting a corrugated sheet making machine.

Selection Criteria for Corrugated Roof Panel Roll Forming Equipment

The key aspects to evaluate when choosing a corrugated profile roll forming line are:

Required profileMatch machine to profile dimensions
Material gradeSpecify material thickness, coating, hardness
Production rateMatch speed to monthly output requirement
Sheet widthStandard 1-2 m widths or custom wider
Wave toleranceSpecify max allowable variation
Automation levelManual to fully automated lines
Line flexibilityQuick changeover between profiles
ServiceabilityEase of maintenance and service
ReliabilityReputation for robust durable equipment
ManufacturerTechnology level, experience, support capability
Total costEquipment cost, shipping, installation, training
  • Firstly, the profile dimensions must match the application roofing sheets needed.
  • The line must be suitable for forming the specified material grade and thickness.
  • Production speed should match the monthly or yearly output capacity needed. Speed can be increased later by upgrades.
  • Standard sheet widths of 1-2 meters are commonly used. For wider coils, slitting may be needed.
  • For high quality, tolerance on wave dimensions should be specified, for example ± 0.5 mm
  • Level of automation selected based on production volumes and cost.
  • Flexible machines allow quick profile changeovers with minimum setup time loss.
  • Opt for rugged heavy-duty equipment with reliability guarantees from maker.
  • Choose reputed manufacturer with proven experience in corrugated profile forming applications.
  • Consider total delivered cost including loading, shipping, installation help given.

Next, we will go over the installation and operation guidelines for these machines.

Installation and Operation of Corrugated Roof Panel Roll Forming Equipment

Proper installation and operation practices are required to achieve top performance from the corrugated sheet making line. Here are some key guidelines:

Site preparationEnsure sufficient space, power supply, earthing
UnloadingUse forklifts, cranes to carefully unload
PositioningKeep adequate access space around machine
LevelingUse shims to accurately level forming line
CommissioningElectrician to complete power, sensor connections
Trial runsInitially run at low speed with reject sheets
Parameter tuningGradually optimize roll pressures, positions, speeds
Staff trainingTrain workers thoroughly for each work station
OperationFollow SOPs for startup, running, shutdown
SafetyImplement lockout/tagout, emergency stop buttons
  • Carefully prepare installation site, provide cranes, tools.
  • Unload elements safely, avoid damage.
  • Position line on robust foundations, leaving sufficient access space.
  • Precision level the machine frame for smooth running.
  • Commissioning must cover all mechanical, electrical, pneumatic connections.
  • Conduct trial runs initially at low speeds of 10-15 m/min to stabilize process.
  • Adjust operating parameters until desired quality achieved.
  • Train staff fully on equipment operations, safety, maintenance.
  • Strictly follow standard operating procedures.
  • Install safety guards, interlocks and allow only authorized access.

Proper maintenance practices are also required for reliable functioning.

corrugated roof panel roll forming machine
Corrugated Roof Panel Roll Forming Machines 6

Maintenance Practices for Corrugated Roof Panel Roll Forming Machines

Regular preventive maintenance is key for trouble-free operation of corrugated profile forming equipment. Here are some key maintenance guidelines:

InspectionsDaily checks for abnormalities
Roller wearReplace rolls when surface wears out
Roller balancingRe-balance or replace unbalanced forming rolls
Roller lubricationUse light mineral oils or grease
Fastener tighteningRe-tighten any loosened bolts or fittings
AlignmentRealign forming rolls if sheet shifting observed
HydraulicsInspect hoses, cylinders, check oil
ElectricalsCheck cables, sensors, motor condition
Drive lubricationGrease gearbox bearings and chains
Chain tensionAdjust chain tension if needed
CleanlinessKeep equipment clean, remove metal dust
  • Perform daily inspections and observation of any abnormalities.
  • Monitor roller surface wear and resurface or replace as needed.
  • Re-balance or change worn rolls causing vibration.
  • Apply light lubricating oil on rolls periodically for smooth rolling.
  • Ensure all station bolts, drives, chains are fastened firmly.
  • Realign forming rolls if sheet position gets offset during forming.
  • Inspect hydraulics – hoses, cylinders, reservoirs regularly.
  • Check electrical connections, sensors, motors and repair if needed.
  • Lubricate gearbox bearings, drive chains periodically.
  • Adjust chain tension if looseness develops.
  • Always keep equipment in clean condition. Remove metal dust and particles frequently.

Next, we look at the pros and cons of corrugated profile roll forming machines.

Advantages and Limitations of Corrugated Roof Panel Roll Forming Lines

Some of the main benefits and limitations of corrugated sheet making roll formers are:

High production speedHigh initial investment
Low operating costLimited to light gauge sheets
Consistent qualityLimited profile shape flexibility
Dimensional accuracySignificant maintenance
Simplified material handlingProcess fine-tuning needed
Compact layoutSkilled operators required
Versatile performanceSignificant noise level


  • High forming speeds around 25 m/min maximize output.
  • Low operating costs due to electric drives and minimal wastage.
  • Consistent and uniform profile quality achieved.
  • Close dimensional tolerances and repeatability obtained.
  • Coil feeding simplifies material handling.
  • Compact layout reduces space needed.
  • Versatile performance – wide range of materials, thicknesses.


  • High initial equipment investment cost.
  • Generally limited to thinner sheets below 2 mm thickness.
  • Fixed tooling restricts profile shape changes.
  • Significant maintenance needs – roll wear, lubrication, alignment.
  • Process fine tuning required to achieve desired quality.
  • Skilled technicians needed for operation and maintenance.
  • Running equipment causes noticeable high noise.

Now we will address some common questions regarding these machines.


What materials can be formed?Commonly G550 galvanized steel or AZ150 aluminum sheets. Other metals possible with alloy-specific tooling.
What is the typical tolerance?Standard machines achieve ± 1.5 mm tolerance on wave height and pitch. Precision machines can achieve ± 0.3 mm tolerance through profile monitoring and closed-loop control.
What safety features required?Operators should wear hearing protection due to noise. Safety guards, emergency stops provided. Interlocking access doors are recommended.
What is the typical production rate?Around 300-600 square meters per hour normally achieved for standard corrugated profiles and 1 meter width. Complex multi-layer profiles have lower production rate.
How to increase capacity later?Additional slitting station can be added for wider coils. Speed can be increased by installing stronger motor, drives. Quick die change systems allow fast profile changes.
How much area is needed?Around 15×3 meters for a standard line. Additional uncoiler and exit conveyor space needed.
What utilities needed?Mainly stable power supply, compressed air for hydraulics. Some oil or air-mist lubrication.
What is the service life?Around 3-5 years on average if maintained well. Rollers need replacement every 1-2 years depending on running hours.

Troubleshooting Guide

Some common issues faced during corrugated sheet roll forming and remedies are shown below:

ProblemPossible CausesCorrective Actions
Inconsistent wave profileWorn forming rolls
Misaligned rolls
Improper roll gap
Resurface or replace forming rolls
Realign rolls to precision
Adjust roll gaps
Sheet jammingSheet alignment error
Roll surface damage
Excess friction
Correct sheet positioning
Smoothen roll surface
Apply lubricant on rolls
Scratches on sheetDirty roll surface
Damaged roll surface
Clean roll thoroughly
Repair roll surface damage
Oil stains on sheetsExcessive lubricant application
Oil leakage
Optimize lubricant quantity
Fix oil leaks from hydraulics, gearbox
Sheet deformationNon-uniform roller wear
Loose roller bearing
Equalize roller wear
Tighten loose bearing
Excessive noiseLoose fasteners
Misaligned components
Unbalanced roller
Tighten loose parts
Realign forming path
Re-balance rollers
Hydraulics issueBlocked filter
Pump wear
Leaking cylinder
Clean or replace filter
Repair/replace pump
Seal cylinder leakage
Electrical faultLoose wiring connection
Sensor failure
Motor issue
Check and tighten connections
Replace faulty sensor
Repair or replace motor
  • For wave inconsistency – First replace worn forming rolls. Also ensure precise alignment between upper and lower rolls. Adjust vertical gaps between roller stations.
  • For jamming – Check sheet guiding at each station. Rolls should have smooth surface finish. Apply light oil as lubricant.
  • Scratches from dirt or damage on roll surface. Thoroughly clean and restore roll finish. Replace damaged rolls.
  • Excess oil application creates stains on sheets. Fix any hydraulic or gear oil leaks. Optimize oil quantity.
  • Non-uniform deformation indicates uneven roller wear. Equalize wear or replace worn rolls. Check bearing tightness.
  • Noise from loose parts. Re-tighten fasteners to torque specs. Realign forming stations. Balance or replace noisy rollers.
  • Hydraulic problems – Clean filter and pump. Replace leaking cylinder seals. Use specified grade hydraulic oil.
  • Check electrical connections. Replace any faulty sensors or motors. Follow troubleshooting manual.

Proper maintenance and adjustments will resolve most operational issues and restore performance.


We have discussed corrugated roof panel roll forming machines in great depth. The key takeaways are:

  • Roll forming efficiently produces corrugated roof sheets of consistent quality at high speeds.
  • Corrugated profiles like standard sinusoidal, 5V Crimp and widespan are commonly produced.
  • Machines contain unwinding, feeding, slitting, forming, curtting and stacking modules.
  • Gradual bending is done on the sheet metal by the forming rollers to create the wave profile.
  • Production speeds from 10-25 m/min allow capacities of 150-1200 sheets/hour.
  • Roll forming lines are available from small $40k models to large $250k models based on output, automation and features.
  • Careful site preparation, commissioning, maintenance and safety practices are needed.
  • With regular upkeep and part replacement, service life of 3-5 years can be expected.

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